{"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\/it\/difference-between-q235-and-q345\/","title":{"rendered":"Qual \u00e8 la differenza tra l&#039;acciaio Q235 e quello Q345 e quale dovrei usare per i miei progetti?"},"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\">Introduzione<\/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>L&#039;acciaio \u00e8 un materiale comune utilizzato nell&#039;edilizia e sono disponibili diversi gradi di acciaio a seconda dell&#039;uso previsto. Due gradi comuni di acciaio sono Q235 e Q345. Quindi qual \u00e8 la differenza tra questi due gradi? E quale dovresti scegliere per il tuo progetto?<\/p><p>Continuate a leggere per scoprirlo.<\/p><p><span style=\"color: #000000;\"><strong>Nota di aggiornamento:<\/strong> <\/span><\/p><p>Secondo la norma nazionale cinese &quot;Acciaio strutturale bassolegato ad alta resistenza&quot; GB\/T1591-2018, dal 1\u00b0 febbraio 2019 il grado di acciaio Q345 \u00e8 stato sostituito con Q355, che corrisponde al grado di acciaio S355 dello standard UE.<\/p><p>Nel testo seguente viene utilizzato Q355 anzich\u00e9 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\">Cosa sono gli acciai Q235 e Q355?<\/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>Innanzitutto, l&#039;acciaio \u00e8 un tipo di lega metallica composta principalmente da ferro e carbonio. Ha molti usi nel mondo, dalle automobili agli edifici. L&#039;acciaio \u00e8 definito dalla sua resistenza e durezza, che possono variare a seconda della composizione degli altri elementi che contiene.<\/p><p>I tipi pi\u00f9 comuni di acciaio sono classificati in base al loro contenuto di carbonio:<\/p><p>Acciaio al carbonio (carbonio 0,03% \u2013 1,7%)<\/p><p>\u2013 Acciaio a basso tenore di carbonio (meno di 0,3% di carbonio)<\/p><p>\u2013 Acciaio a medio tenore di carbonio (carbonio 0,3% \u2013 0,6%)<\/p><p>\u2013 Acciaio ad alto tenore di carbonio (oltre 0,6% a 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 \u00e8 una lega di acciaio cinese, contenente carbonio, silicio, manganese e tracce di altri elementi. Ha una resistenza alla trazione relativamente bassa ed \u00e8 utilizzata in applicazioni edilizie in cui la sua resistenza non deve essere particolarmente elevata.<\/p><ul><li>Domanda 355<\/li><\/ul><p>L&#039;acciaio Q355 \u00e8 un tipo di acciaio debolmente legato, utilizzato nella produzione di ponti, edifici e altre strutture. Ha una resistenza allo snervamento di 355 MPa e una resistenza alla trazione di 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\">Caratteristiche dell&#039;acciaio Q235 e Q355<\/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>Caratteristiche dell&#039;acciaio Q235:<\/li><\/ul><ol><li style=\"list-style-type: none;\"><ol><li>Ha buona plasticit\u00e0 e tenacit\u00e0;<\/li><li>Buona saldabilit\u00e0 e lavorabilit\u00e0 a freddo;<\/li><li>Resistenza moderata alla corrosione;<\/li><li>Presenta una certa resistenza all&#039;usura;<\/li><li>Bassa temprabilit\u00e0 a freddo, facile da saldare e criccabile. L&#039;acciaio Q355 \u00e8 un acciaio strutturale bassolegato ad alta resistenza, che ha buone propriet\u00e0 meccaniche, resistenza alle basse temperature, buona saldabilit\u00e0, moderata propriet\u00e0 di piegatura a freddo e moderata tenacit\u00e0.<\/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>Caratteristiche dell&#039;acciaio Q355:<ol><li>Elevata resistenza, buona plasticit\u00e0 e tenacit\u00e0;<\/li><li>Le prestazioni di saldatura sono buone, la saldatura ha buone propriet\u00e0 di saldatura<\/li><li>La lavorabilit\u00e0 a freddo \u00e8 buona, la deformazione plastica a freddo di piccole dimensioni<\/li><li>La lavorabilit\u00e0 \u00e8 discreta, ma \u00e8 inferiore a quella dell&#039;acciaio al carbonio n. 20<\/li><li>La resistenza alla corrosione non \u00e8 buona quanto quella dell&#039;acciaio inossidabile.<\/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\">La differenza tra acciaio Q235 e Q355<\/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>Contenuto di carbonio<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">La differenza tra l&#039;acciaio Q235 e Q355 sta nel contenuto di carbonio. L&#039;acciaio Q235 ha una piccola quantit\u00e0 di contenuto di carbonio (da 0,3% a 0,4%), mentre l&#039;acciaio Q355 ha una percentuale pi\u00f9 alta (da 0,6% a 1%).<\/p><p style=\"padding-left: 40px;\">Acciaio Q235: questo tipo di acciaio \u00e8 anche noto come acciaio di grado &quot;a basso tenore di carbonio&quot; o &quot;di qualit\u00e0&quot; ed \u00e8 comunemente utilizzato per scopi strutturali, come travi a I o profilati a canale, dove sono richieste resistenza e duttilit\u00e0 ma la saldabilit\u00e0 non \u00e8 necessaria.<\/p><ul><li><strong>Resistenza allo snervamento<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">La differenza principale tra questi due tipi di acciaio \u00e8 il loro limite di snervamento. Il limite di snervamento \u00e8 una misura di quanta sollecitazione un materiale pu\u00f2 sopportare prima di iniziare a deformarsi plasticamente (cio\u00e8 in modo permanente). Maggiore \u00e8 il limite di snervamento, pi\u00f9 resistente sar\u00e0 il metallo alla deformazione permanente sotto carico.<\/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 ha un limite di snervamento di 235 MPa (38 ksi), mentre Q355 ha un limite di snervamento di 355 MPa (50 ksi).<\/p><p style=\"padding-left: 40px;\">Q235 \u00e8 il grado di acciaio pi\u00f9 debole ed \u00e8 il tipo pi\u00f9 comune utilizzato nel settore delle costruzioni. Viene solitamente utilizzato per travi o colonne che non sono esposte a grandi sollecitazioni o carichi pesanti.<\/p><p style=\"padding-left: 40px;\">Il Q355 \u00e8 pi\u00f9 resistente del Q235 e pu\u00f2 essere utilizzato in situazioni in cui ci sono sollecitazioni pi\u00f9 estreme o carichi pesanti. Si trova solitamente in parti che richiedono un livello di sicurezza pi\u00f9 elevato, come travi, colonne o connessioni alla base di un edificio. L&#039;acciaio ad alta resistenza ha il livello di resistenza pi\u00f9 elevato ed \u00e8 solitamente riservato ad aree critiche come connessioni tra elementi strutturali e giunti di collegamento ad altri componenti come pareti.<\/p><p style=\"padding-left: 40px;\">L&#039;acciaio Q355 \u00e8 molto pi\u00f9 resistente dell&#039;acciaio di grado Q235, ma \u00e8 pi\u00f9 costoso da produrre perch\u00e9 richiede pi\u00f9 tempo per creare la lega metallica. Questo tipo di acciaio pu\u00f2 resistere a grandi quantit\u00e0 di stress o pressione prima di rompersi o piegarsi, il che lo rende ideale per scopi strutturali.<\/p><p style=\"padding-left: 40px;\">Pertanto, l&#039;acciaio Q355 \u00e8 pi\u00f9 resistente dell&#039;acciaio Q235.<\/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>Composizione chimica<\/strong><\/li><\/ul><p style=\"padding-left: 40px;\">Q235 e Q355 sono i due acciai pi\u00f9 popolari in Cina. Entrambi sono acciai debolmente legati e ampiamente utilizzati nell&#039;edilizia, nelle ferrovie, nella cantieristica navale e in altri settori. La composizione chimica di Q235 \u00e8 la seguente: C\u22640,28%, Si\u22641%, Mn\u22641,65%, P\u22640,045% e S\u22640,045%. La composizione chimica di Q355 \u00e8 la seguente: C\u22640,30%, Si\u22641%, Mn\u22641,65% e P\u22640,045%. La differenza principale tra questi due tipi di acciaio \u00e8 che il primo contiene meno silicio, manganese e fosforo rispetto al secondo.<\/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\">Quale dovrei usare per i miei progetti?<\/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>I due acciai sono simili per spessore e resistenza, ma l&#039;acciaio Q355 \u00e8 un po&#039; pi\u00f9 costoso.<\/p><p>Il Q235 \u00e8 un comune acciaio strutturale che pu\u00f2 essere utilizzato per costruzioni residenziali o commerciali. Ha una resistenza alla trazione massima di 235.000 PSI e una resistenza allo snervamento di 100.000 PSI. L&#039;acciaio Q355 ha la stessa resistenza alla trazione massima del Q235, ma ha una resistenza allo snervamento leggermente superiore a 110.000 PSI.<\/p><p>Da una prospettiva di costo, vale la pena notare che la differenza di prezzo tra questi due gradi di acciaio \u00e8 nominale, in genere inferiore a $100 per tonnellata. Troverai questo materiale in molti luoghi attorno ai cantieri edili, tra cui la struttura in acciaio, le impalcature, le barriere di protezione dei bordi e le recinzioni di costruzione, ecc.<\/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\/it\/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\/it\/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\/it\/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 \u00e8 una lega di acciaio con un contenuto di carbonio pi\u00f9 elevato di Q235. Ci\u00f2 si traduce in una maggiore resistenza alla trazione, rendendolo ideale per applicazioni in cui \u00e8 richiesta resistenza. Ha anche un punto di fusione pi\u00f9 basso rispetto ad altri acciai, rendendolo adatto per applicazioni di saldatura e formatura a caldo. Tuttavia, le sue propriet\u00e0 lo rendono anche pi\u00f9 suscettibile alla corrosione. Di conseguenza, \u00e8 in genere utilizzato solo in applicazioni in cui la resistenza alla corrosione non \u00e8 una preoccupazione critica.<\/p><p>Quindi, quando si scelgono i materiali, bisogna considerare il budget e lo scenario applicativo; ovviamente, oltre a scegliere l&#039;uno o l&#039;altro, si pu\u00f2 anche optare per una combinazione di due materiali per ottenere il prodotto pi\u00f9 conveniente.<\/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\">Conclusione<\/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>In conclusione, Q235 e Q355 hanno i loro vantaggi e svantaggi, e ognuno ha i suoi campi di applicazione. Pertanto, \u00e8 necessario selezionare attentamente il tipo di acciaio appropriato in base alla situazione effettiva.\u00a0<\/p><p>Puoi direttamente <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/apacsafety.com\/it\/contact-us\/\">contatto<\/a><\/span> i nostri esperti, ti daremo i suggerimenti pi\u00f9 professionali!<\/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 v27.3 - 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\/it\/difference-between-q235-and-q345\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\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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