{"id":27167,"date":"2022-08-04T22:59:12","date_gmt":"2022-08-05T06:59:12","guid":{"rendered":"https:\/\/apacsafety.com\/?p=27167"},"modified":"2025-06-17T11:00:36","modified_gmt":"2025-06-17T03:00:36","slug":"difference-between-q235-and-q345","status":"publish","type":"post","link":"https:\/\/apacsafety.com\/sv\/difference-between-q235-and-q345\/","title":{"rendered":"Vad \u00e4r skillnaden mellan Q235 och Q345 Steel och vilken ska jag anv\u00e4nda f\u00f6r mina projekt?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"27167\" class=\"elementor elementor-27167\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-01ad8be e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-parent\" data-id=\"01ad8be\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t<div class=\"elementor-element elementor-element-6532e28 e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"6532e28\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1ac0f4a elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"1ac0f4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Introduktion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2857cd elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"a2857cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>St\u00e5l \u00e4r ett vanligt material som anv\u00e4nds i konstruktion, och det finns olika st\u00e5lkvaliteter tillg\u00e4ngliga beroende p\u00e5 avsedd anv\u00e4ndning. Tv\u00e5 vanliga st\u00e5lsorter \u00e4r Q235 och Q345. S\u00e5 vad \u00e4r skillnaden mellan dessa tv\u00e5 betyg? Och vilken ska du v\u00e4lja f\u00f6r ditt projekt?<\/p><p>L\u00e4s vidare f\u00f6r att ta reda p\u00e5 det.<\/p><p><span style=\"color: #000000;\"><strong>Uppdateringsnotering:<\/strong> <\/span><\/p><p>Enligt Kinas nationella standard &quot;Low-Alloy High-Strength Structural Steel&quot; GB\/T1591-2018, fr\u00e5n och med den 1 februari 2019, har Q345 st\u00e5lsorten ersatts med Q355, vilket motsvarar EU-standarden S355 st\u00e5lkvalitet.<\/p><p>F\u00f6ljande text anv\u00e4nder Q355 ist\u00e4llet f\u00f6r Q345.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16c6596 elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"16c6596\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vad \u00e4r Q235 och Q355 st\u00e5l?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c19023e e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"c19023e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6014723 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"6014723\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>F\u00f6rst och fr\u00e4mst \u00e4r st\u00e5l en typ av metallegering som huvudsakligen best\u00e5r av j\u00e4rn och kol. Den har m\u00e5nga anv\u00e4ndningsomr\u00e5den i v\u00e4rlden, fr\u00e5n bilar till byggnader. St\u00e5l definieras av dess styrka och h\u00e5rdhet, som kan variera beroende p\u00e5 sammans\u00e4ttningen av andra element som det inneh\u00e5ller.<\/p><p>De vanligaste typerna av st\u00e5l kategoriseras efter deras kolinneh\u00e5ll:<\/p><p>Kolst\u00e5l (0,03% \u2013 1,7% kol)<\/p><p>\u2013 L\u00e5gkolhaltigt st\u00e5l (mindre \u00e4n 0,3% kol)<\/p><p>\u2013 Mellankolst\u00e5l (0,3% \u2013 0,6% kol)<\/p><p>\u2013 H\u00f6gkolhaltigt st\u00e5l (mer \u00e4n 0,6% till 1%)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85d27e2 external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"85d27e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"799\" height=\"598\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/Steel-345.png\" class=\"attachment-large size-large wp-image-28581\" alt=\"Steel 345\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/Steel-345.png 799w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/Steel-345-300x225.png 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/Steel-345-768x575.png 768w\" sizes=\"(max-width: 799px) 100vw, 799px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-67fb69d e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"67fb69d\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2010817 elementor-widget__width-initial elementor-widget-tablet__width-initial external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"2010817\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"625\" height=\"416\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-raw-material.png\" class=\"attachment-large size-large wp-image-27171\" alt=\"steel raw material\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-raw-material.png 625w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-raw-material-300x200.png 300w\" sizes=\"(max-width: 625px) 100vw, 625px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98c4d05 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"98c4d05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Q235<\/li><\/ul><p>Q235 \u00e4r en kinesisk st\u00e5llegering som inneh\u00e5ller kol, kisel, mangan och sp\u00e5rm\u00e4ngder av andra grund\u00e4mnen. Den har en relativt l\u00e5g dragh\u00e5llfasthet och anv\u00e4nds i byggapplikationer d\u00e4r det inte kr\u00e4vs att dess h\u00e5llfasthet \u00e4r s\u00e4rskilt h\u00f6g.<\/p><ul><li>Q355<\/li><\/ul><p>Q355 st\u00e5l \u00e4r en typ av l\u00e5glegerat st\u00e5l som anv\u00e4nds vid tillverkning av broar, byggnader och andra strukturer. Den har en str\u00e4ckgr\u00e4ns p\u00e5 355 MPa och en dragh\u00e5llfasthet p\u00e5 470-660 MPa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f30308b elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"f30308b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Egenskaper f\u00f6r Q235 och Q355 st\u00e5l<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-11d35c8 e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"11d35c8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30d9575 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"30d9575\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Egenskaper hos Q235 Steel:<\/li><\/ul><ol><li style=\"list-style-type: none;\"><ol><li>Den har god plasticitet och seghet;<\/li><li>Bra svetsbarhet och kallbearbetbarhet;<\/li><li>M\u00e5ttlig korrosionsbest\u00e4ndighet;<\/li><li>Har viss slitstyrka;<\/li><li>L\u00e5g kallh\u00e4rdbarhet, l\u00e4tt att svetsa sprickbildning. Q355-st\u00e5l \u00e4r ett l\u00e5glegerat h\u00f6gh\u00e5llfast konstruktionsst\u00e5l, som har goda mekaniska egenskaper, l\u00e5gtemperaturh\u00e5llfasthet, god svetsbarhet, m\u00e5ttlig kallb\u00f6jningsegenskaper och m\u00e5ttlig seghet.<\/li><\/ol><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e1e01d elementor-widget__width-initial elementor-widget-tablet__width-initial external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"8e1e01d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"798\" height=\"598\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-welding.png\" class=\"attachment-large size-large wp-image-28585\" alt=\"steel welding\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-welding.png 798w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-welding-300x225.png 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-welding-768x576.png 768w\" sizes=\"(max-width: 798px) 100vw, 798px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-90630f7 e-con-full e-flex elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"90630f7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25d2d68 elementor-widget__width-initial elementor-widget-tablet__width-initial external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"25d2d68\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/toughness-steel.png\" class=\"attachment-large size-large wp-image-28586\" alt=\"toughness steel\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/toughness-steel.png 900w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/toughness-steel-300x200.png 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/toughness-steel-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-601365a elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"601365a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Egenskaper f\u00f6r Q355 st\u00e5l:<ol><li>H\u00f6g h\u00e5llfasthet, god plasticitet och seghet;<\/li><li>Svetsprestanda \u00e4r bra, svetsen har bra svetsegenskaper<\/li><li>Kall bearbetbarhet \u00e4r bra, kall plastisk deformation av sm\u00e5<\/li><li>Bearbetbarheten \u00e4r r\u00e4ttvis, men den \u00e4r s\u00e4mre \u00e4n den f\u00f6r nr 20 kolst\u00e5l<\/li><li>Korrosionsbest\u00e4ndigheten \u00e4r inte lika bra som f\u00f6r rostfritt st\u00e5l.<\/li><\/ol><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5560075 elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"5560075\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Skillnaden mellan Q235 och Q355 st\u00e5l<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a029aa9 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"a029aa9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>Kolinneh\u00e5ll<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">Skillnaden mellan Q235 och Q355 st\u00e5l ligger i kolhalten. Q235-st\u00e5let har en liten m\u00e4ngd kolhalt (0,3% till 0,4%), medan Q355-st\u00e5let har en h\u00f6gre procentandel (0,6% till 1%).<\/p><p style=\"padding-left: 40px;\">Q235 St\u00e5l: Denna typ av st\u00e5l \u00e4r ocks\u00e5 k\u00e4nd som st\u00e5l av &quot;l\u00e5gkolhalt&quot; eller &quot;kvalitetsst\u00e5l&quot; och det anv\u00e4nds ofta f\u00f6r konstruktions\u00e4ndam\u00e5l, s\u00e5som I-balkar eller kanalsektioner, d\u00e4r h\u00e5llfasthet och duktilitet kr\u00e4vs men svetsbarhet inte \u00e4r n\u00f6dv\u00e4ndig.<\/p><ul><li><strong>Avkastningsstyrka<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">Den st\u00f6rsta skillnaden mellan dessa tv\u00e5 typer av st\u00e5l \u00e4r deras str\u00e4ckgr\u00e4ns. Str\u00e4ckgr\u00e4ns \u00e4r ett m\u00e5tt p\u00e5 hur mycket belastning ett material t\u00e5l innan det b\u00f6rjar deformeras plastiskt (det vill s\u00e4ga permanent). Ju h\u00f6gre str\u00e4ckgr\u00e4nsen \u00e4r, desto mer motst\u00e5ndskraftig blir metallen mot permanent deformation under belastning.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a61377 external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"7a61377\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"452\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-yield-strength.jpg\" class=\"attachment-large size-large wp-image-28591\" alt=\"\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-yield-strength.jpg 982w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-yield-strength-300x170.jpg 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/steel-yield-strength-768x434.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c6fffa6 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"c6fffa6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"padding-left: 40px;\">Q235 har en str\u00e4ckgr\u00e4ns p\u00e5 235 MPa (38 ksi), medan Q355 har en str\u00e4ckgr\u00e4ns p\u00e5 355 MPa (50 ksi).<\/p><p style=\"padding-left: 40px;\">Q235 \u00e4r den svagaste st\u00e5lkvaliteten och \u00e4r den vanligaste typen som anv\u00e4nds inom byggbranschen. Det anv\u00e4nds vanligtvis f\u00f6r balkar eller pelare som inte uts\u00e4tts f\u00f6r stora p\u00e5k\u00e4nningar eller tunga belastningar.<\/p><p style=\"padding-left: 40px;\">Q355 \u00e4r starkare \u00e4n Q235 och kan anv\u00e4ndas i situationer d\u00e4r det \u00e4r mer extrema p\u00e5frestningar eller tunga belastningar. Det finns vanligtvis i delar som kr\u00e4ver en h\u00f6gre s\u00e4kerhetsniv\u00e5, s\u00e5som balkar, pelare eller anslutningar vid en byggnads bas. H\u00f6gh\u00e5llfast st\u00e5l har den h\u00f6gsta h\u00e5llfasthetsniv\u00e5n och \u00e4r vanligtvis reserverad f\u00f6r kritiska omr\u00e5den som kopplingar mellan konstruktionselement och fogar som ansluter till andra komponenter som v\u00e4ggar.<\/p><p style=\"padding-left: 40px;\">Q355-st\u00e5l \u00e4r mycket starkare \u00e4n st\u00e5l av Q235-kvalitet, men det kostar mer att tillverka eftersom det kr\u00e4ver mer tid att skapa metallegeringen. Denna typ av st\u00e5l kan motst\u00e5 stora m\u00e4ngder p\u00e5frestningar eller tryck innan det g\u00e5r s\u00f6nder eller b\u00f6js, vilket g\u00f6r det idealiskt f\u00f6r konstruktions\u00e4ndam\u00e5l.<\/p><p style=\"padding-left: 40px;\">D\u00e4rf\u00f6r \u00e4r Q355-st\u00e5l starkare \u00e4n Q235-st\u00e5l.<\/p><p style=\"padding-left: 40px;\">\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-05b9486 e-flex e-con-boxed elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"05b9486\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e2804cd elementor-widget__width-initial elementor-widget-tablet__width-initial external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"e2804cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"590\" height=\"327\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/alloy-steel.jpg\" class=\"attachment-large size-large wp-image-28590\" alt=\"alloy-steel\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/alloy-steel.jpg 590w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/08\/alloy-steel-300x166.jpg 300w\" sizes=\"(max-width: 590px) 100vw, 590px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1bff8a2 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"1bff8a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>Kemisk sammans\u00e4ttning<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">Q235 och Q355 \u00e4r de tv\u00e5 mest popul\u00e4ra st\u00e5len i Kina. B\u00e5da \u00e4r l\u00e5glegerade st\u00e5l och anv\u00e4nds ofta inom bygg-, j\u00e4rnv\u00e4gs-, varvsindustrin och andra industrier. Den kemiska sammans\u00e4ttningen av Q235 \u00e4r som f\u00f6ljer: C\u22640,28%, Si\u22641%, Mn\u22641,65%, P\u22640,045% och S\u22640,045%. Den kemiska sammans\u00e4ttningen av Q355 \u00e4r som f\u00f6ljer: C\u22640,30%, Si\u22641%, Mn\u22641,65% och P\u22640,045%. Den st\u00f6rsta skillnaden mellan dessa tv\u00e5 typer av st\u00e5l \u00e4r att den f\u00f6rsta inneh\u00e5ller mindre kisel-, mangan- och fosforhalt \u00e4n den andra.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b48901a elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"b48901a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vilken ska jag anv\u00e4nda f\u00f6r mina projekt?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2007562 elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"2007562\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>De tv\u00e5 st\u00e5len \u00e4r lika i tjocklek och styrka, men Q355-st\u00e5let \u00e4r lite dyrare.<\/p><p>Q235 \u00e4r ett vanligt konstruktionsst\u00e5l som kan anv\u00e4ndas f\u00f6r bostadsbyggande eller kommersiellt byggande. Den har en slutlig dragh\u00e5llfasthet p\u00e5 235 000 PSI och str\u00e4ckgr\u00e4ns p\u00e5 100 000 PSI. Q355-st\u00e5let har samma slutliga dragh\u00e5llfasthet som Q235, men har en n\u00e5got h\u00f6gre str\u00e4ckgr\u00e4ns vid 110 000 PSI.<\/p><p>Ur ett kostnadsperspektiv \u00e4r det v\u00e4rt att notera att skillnaden i pris mellan dessa tv\u00e5 st\u00e5lkvaliteter \u00e4r nominell - vanligtvis mindre \u00e4n $100 per ton. Du hittar detta material p\u00e5 m\u00e5nga st\u00e4llen runt byggarbetsplatser, inklusive st\u00e5lkonstruktionen, byggnadsst\u00e4llningar, kantskyddsbarri\u00e4rer och byggst\u00e4ngsel, etc.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-902f745 e-flex e-con-boxed elementor-repeater-item-default_padding elementor-repeater-item-none elementor-repeater-item-none_hover e-con e-child\" data-id=\"902f745\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ang_container_spacing_size&quot;:&quot;default_padding&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6cd0e2d external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"6cd0e2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/apacsafety.com\/sv\/ringlock-scaffolding-systems\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/07\/scaffolding-project-1.jpg\" class=\"attachment-large size-large wp-image-26584\" alt=\"scaffolding\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/07\/scaffolding-project-1.jpg 800w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/07\/scaffolding-project-1-300x225.jpg 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/07\/scaffolding-project-1-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18867ca external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"18867ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/apacsafety.com\/sv\/edge-protection-barrier\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/06\/edge-protection-projects-england.jpg\" class=\"attachment-large size-large wp-image-25661\" alt=\"edge protection projects england\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/06\/edge-protection-projects-england.jpg 800w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/06\/edge-protection-projects-england-300x225.jpg 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/06\/edge-protection-projects-england-768x576.jpg 768w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/06\/edge-protection-projects-england-595xh.jpg 595w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d0a400f external_elementor-repeater-item-none_external elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-image\" data-id=\"d0a400f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/apacsafety.com\/sv\/temporary-fence\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"798\" height=\"599\" src=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/03\/black-base-for-heras-fence.jpg\" class=\"attachment-large size-large wp-image-20859\" alt=\"black base for heras fence\" srcset=\"https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/03\/black-base-for-heras-fence.jpg 798w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/03\/black-base-for-heras-fence-300x225.jpg 300w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/03\/black-base-for-heras-fence-768x576.jpg 768w, https:\/\/apacsafety.com\/wp-content\/uploads\/2022\/03\/black-base-for-heras-fence-595xh.jpg 595w\" sizes=\"(max-width: 798px) 100vw, 798px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aaab73e elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"aaab73e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Q355 \u00e4r en st\u00e5llegering med h\u00f6gre kolhalt \u00e4n Q235. Detta resulterar i en h\u00f6gre dragh\u00e5llfasthet, vilket g\u00f6r den idealisk f\u00f6r applikationer d\u00e4r styrka kr\u00e4vs. Den har ocks\u00e5 en l\u00e4gre sm\u00e4ltpunkt \u00e4n andra st\u00e5l, vilket g\u00f6r den l\u00e4mplig f\u00f6r svetsning och varmformning. Men dess egenskaper g\u00f6r den ocks\u00e5 mer k\u00e4nslig f\u00f6r korrosion. Som ett resultat anv\u00e4nds det vanligtvis endast i till\u00e4mpningar d\u00e4r korrosionsbest\u00e4ndighet inte \u00e4r ett kritiskt problem.<\/p><p>S\u00e5 n\u00e4r du v\u00e4ljer material m\u00e5ste du ta h\u00e4nsyn till budgeten och till\u00e4mpningsscenariot, naturligtvis, f\u00f6rutom att v\u00e4lja det ena eller det andra, kan du ocks\u00e5 v\u00e4lja en blandning av tv\u00e5 material f\u00f6r att f\u00e5 den mest kostnadseffektiva produkten.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a692ea8 elementor-widget-mobile__width-initial elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-heading\" data-id=\"a692ea8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Slutsats<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8d06a5a elementor-repeater-item-none elementor-repeater-item-none_hover elementor-widget elementor-widget-text-editor\" data-id=\"8d06a5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sammanfattningsvis har Q235 och Q355 sina egna f\u00f6rdelar och nackdelar, och var och en har sina egna applikationsomr\u00e5den. D\u00e4rf\u00f6r \u00e4r det n\u00f6dv\u00e4ndigt att noggrant v\u00e4lja l\u00e4mplig typ av st\u00e5l enligt den faktiska situationen.\u00a0<\/p><p>Du kan direkt <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/apacsafety.com\/sv\/contact-us\/\">kontakta<\/a><\/span> v\u00e5ra experter, vi kommer att ge dig de mest professionella f\u00f6rslagen!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction Steel is a common material used in construction, and there are different grades of steel available depending on the intended use. Two common grades of steel are Q235 and Q345. So what is the difference between these two grades? And which one should you choose for your project? Read on to find out. Update [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":27170,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86,20,1],"tags":[],"class_list":["post-27167","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-construction-fence","category-edge-protection","category-scaffolding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is the Difference Between Q235 and Q345 Steel?<\/title>\n<meta name=\"description\" content=\"What Is the Difference Between Q235 and Q345 Steel? Hope this blog will tell you the answer. Click and read more!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/apacsafety.com\/sv\/difference-between-q235-and-q345\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is the Difference Between Q235 and Q345 Steel?\" \/>\n<meta property=\"og:description\" content=\"What Is the Difference Between Q235 and Q345 Steel? Hope this blog will tell you the answer. 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