{"id":7513,"date":"2022-09-08T14:48:29","date_gmt":"2022-09-08T14:48:29","guid":{"rendered":"https:\/\/hdcmfg.com\/?p=7513"},"modified":"2026-03-03T07:28:07","modified_gmt":"2026-03-03T07:28:07","slug":"q235-lavorazione-acciaio-carbonio","status":"publish","type":"post","link":"https:\/\/hdcmfg.com\/it\/blogs\/q235-carbon-steel-machining\/","title":{"rendered":"Acciaio al carbonio Q235: composizione, caratteristiche e applicazioni"},"content":{"rendered":"

Panoramica<\/h2>\n

Q235 \u00e8 un acciaio flessibile a basso tenore di carbonio con una struttura in carbonio, comunemente usato senza trattamento termico poich\u00e9 distrugger\u00e0 il trattamento termico della saldatura. Grazie alla sua buona plasticit\u00e0, tenacit\u00e0, saldabilit\u00e0 e resistenza, in particolare alle prestazioni ad alto costo, \u00e8 ampiamente utilizzato nelle strutture edili e ingegneristiche, come piastre, barre d'acciaio, tubi d'acciaio saldati e altre parti. \"acciaio<\/p>\n

Cos'\u00e8 l'acciaio al carbonio Q235?<\/h2>\n

In China, Q235 carbon steel, which has a low carbon content, is often used as structural steel, combined with good welding performance. The steel is, like ASTM A36 in the US and S235JR in Europe, completely comparable. Q235 steel is usually carbonized up to 0.2% level, which is combined with manganese, silicon, sulfur, and phosphorus, etc., as other alloying elements. It finds widespread application in construction, machinery, and manufacturing industries in a variety of structural components like beams, columns, and plates, due to its reasonable strength, ductility, and low-cost. Q235 carbon steel can be processed by other methods such as welding, machining and forming to suite specific designs.<\/p>\n

Why is Q235 Carbon Steel Named Differently?<\/h2>\n

The name “Q235” is derived from the Chinese prizm, and it stands for the naming convention of China.\u00a0Steel grades usually have a number that comes before the prefix. This number indicates the minimum yield strength of the steel.\u00a0“Q” stands for “quality” and is given in the form of number that is the yield strength of at least 235 MPa.\u00a0As a result the “Q235” carbon steel is a type of steel that has the minimum yield strength twenty three five mega pascals.\u00a0This classification and standardization system makes use of this marking system for steel grades in manufacturing, construction, and other relevant areas in China.\"acciaio<\/p>\n

Which Alloy under the AISI Standard is Similar to Q235 Carbon Steel?<\/h2>\n

L'equivalente AISI dell'acciaio al carbonio Q235 cinese \u00e8 generalmente considerato AISI 1008 o AISI 1010. Questi standard americani corrispondono strettamente al Q235 in termini di composizione chimica e propriet\u00e0 meccaniche, offrendo duttilit\u00e0, resistenza e capacit\u00e0 di saldatura simili. L'AISI 1008 contiene circa 0,08% di carbonio, mentre l'AISI 1010 ha un contenuto di carbonio leggermente superiore a circa 0,10%. Questi acciai a basso tenore di carbonio sono utilizzati in varie applicazioni grazie al loro equilibrio di caratteristiche prestazionali. Tuttavia, per applicazioni specifiche, si consigliano confronti dettagliati e consultazione con le specifiche dei materiali per garantire la piena compatibilit\u00e0 e il rispetto degli standard richiesti.<\/p>\n

Quali limitazioni ha l'acciaio al carbonio Q235?\"acciaio<\/h2>\n

Compared to other steels, Q235 carbon steel is used extensively but it shows some limitations.\u00a0Also, it possesses lower yield strength putting stringent limits on its application in environments demanding high strength mechanical properties and high load baring capacity.\u00a0Therefore, meeting with a high risk of corrosion, especially in corrosive environments or high humidity, needs extra safety precautions in terms of coating or galvanization.\u00a0Moreover, Q235 steel might be characterized by lowered toughness, which provides the reason to assume the negative toughness of the steel in low temperatures or under impact charges.\u00a0Weldability concerns involving weld cracking and porosity are the issues that must be carefully addressed during the welding processes.\u00a0It is also possible that smoothing steps such as additional machining or finishing are needed to achieve the desired surface finish as roughness makes the performance of high-quality steels.\u00a0In spite of the above limitations, Q235 carbon steel is still widely used in some of the industries but you have to bear in mind that it is not appropriate for specific scenarios.<\/p>\n

Composizione chimica dell'acciaio al carbonio Q235<\/h2>\n\n\n\n\n\n\n\n\n\n
Componente<\/strong><\/td>\nPeso %<\/strong><\/td>\n<\/tr>\n
Carbonio (C)<\/td>\n0,0 \u2013 0,22<\/td>\n<\/tr>\n
Manganese (Mn)<\/td>\n0,0 \u2013 1,40<\/td>\n<\/tr>\n
Fosforo (P)<\/td>\n0,0 \u2013 0,045<\/td>\n<\/tr>\n
Zolfo (S)<\/td>\n0,0 \u2013 0,05<\/td>\n<\/tr>\n
Silicio (Si)<\/td>\n0,0 \u2013 0,35<\/td>\n<\/tr>\n
Ferro (Fe)<\/td>\n98,81 \u2013 99,26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L'influenza della composizione elementare sulle propriet\u00e0 dell'acciaio al carbonio Q235\"acciaio<\/h2>\n

The explicit dependence of Q235 carbon steel on the elemental composition of its constituents is an established fact.\u00a0Carbon content is the source of hardness, strength, and weldability, but Q235 steel has a relatively low content to provide decent strength combined with ductility.\u00a0Manganese is used to give hardenability and overall mechanical properties, while silicon makes up the high strength and hardenability.\u00a0Phosphorus and sulfur content are kept at minimum to ensure ductility and to avoid breakages.\u00a0Besides that, trace elements such as copper, nickel, chromium, and vanadium are also involved in governance of corrosion resistance as well as the mechanical strength.\u00a0Very high accuracy of control of these factors ends up with specific properties of Q235 steel that makes it applicable to a wide variety of uses.<\/p>\n

Propriet\u00e0 meccaniche dell'acciaio al carbonio Q235<\/h2>\n\n\n\n\n
Grado<\/strong><\/td>\nForza di resa<\/strong><\/td>\nResistenza alla trazione<\/strong><\/td>\nAllungamento %<\/strong><\/td>\n<\/tr>\n
Q235 Acciaio<\/td>\n235 Mpa<\/td>\n370-500 Mpa<\/td>\n26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Propriet\u00e0 fisiche dell'acciaio al carbonio Q235<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Propriet\u00e0 fisiche<\/strong><\/td>\n<\/tr>\n
Densit\u00e0, g\/cm3 (lb\/in3)<\/td>\n7.85 (0.284)<\/td>\n<\/tr>\n
Punto di fusione, \u00b0C (\u00b0F)<\/td>\n1450-1530 (2640-2800)<\/td>\n<\/tr>\n
Capacit\u00e0 termica specifica, J\/(Kg\u00b7K)<\/td>\n470 a 20 \u00b0C (68 \u00b0F)<\/td>\n<\/tr>\n
Resistivit\u00e0 elettrica, \u03bc\u03a9\u00b7m<\/td>\ncirca 0,15 (20 \u00b0C)<\/td>\n<\/tr>\n
Modulo elastico, GPa (ksi)<\/td>\n200 (29 x 103)<\/td>\n<\/tr>\n
Conducibilit\u00e0 termica, (W\/m\u00b7K)<\/td>\n53-49 (0-100 \u00b0C)<\/td>\n<\/tr>\n
Coefficient of thermal expansion, (10-6\/K)<\/td>\n11,3-11,6 a 20-100 \u00b0C (68-212 \u00b0F)<\/td>\n<\/tr>\n
Modulo di Young, GPa (ksi)<\/td>\n200 (29 x 103)<\/td>\n<\/tr>\n
rapporto di Poisson<\/td>\n0.24-0.28<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Metodi di lavorazione dell'acciaio al carbonio Q235\"acciaio<\/h2>\n

Q235 carbon steel can be machined, welded and formed using the standard techniques, which is a great advantage when looking for high quality machined parts at unmatched prices. Machining is ensuring the shaping by means of drilling, milling, or turning, whereas welding methods facilitate the joining. The cold forming processes by means of bending and stamping make highly complex shapes, and the stress relieving makes de-stressing. Corrosion resistance is greatly increased by surface treatments as painting or galvanizing. These methods give the possibility to produce castings for the construction of structures, machines, and cars.<\/p>\n

Applicazioni dell'acciaio al carbonio Q235<\/h2>\n

One of the areas where Q235 carbon steel is widely used is its diverse applications across various industries due these properties.\u00a0It is used for making structural elements such as beams, columns and plates in construction due to its strength and favorable weldability.\u00a0The production of machinery requires the use of Q235 for a variety of pieces such as gears, shafts, and fasteners, since it is machinable and so easy to afford.\u00a0The automotive industries can benefit from it as a constituent of body panels and chassis due to its balance of strength and malleability.\u00a0Besides, Q235 steel is also used in industry manufacturing equipments, agricultural machineries, and pipelines, due to its vast usages across different sectors which include critical applications for construction and mechanics which require reliable, low cost materials.\"acciaio<\/p>\n

Materiali equivalenti all'acciaio al carbonio Q235<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Unione Europea<\/td>\nIT<\/td>\n<\/td>\n<\/tr>\n
Stati Uniti d'America<\/td>\n\u2013<\/td>\nGr.C<\/td>\n<\/tr>\n
Germania<\/td>\nDIN, WNr<\/td>\n\n

1.0028<\/p>\n

1.0036<\/p>\n

St34-2<\/p>\n

USt37-2<\/p>\n<\/td>\n<\/tr>\n

Giappone<\/td>\nJIS<\/td>\n\n

SS330<\/p>\n

STKM12A<\/p>\n<\/td>\n<\/tr>\n

Francia<\/td>\nAFNOR<\/td>\nA34-2<\/p>\n

S235JRG1<\/td>\n<\/tr>\n

Inghilterra<\/td>\nBS<\/td>\n\n

CEW2BK<\/p>\n

Fe360B<\/p>\n<\/td>\n<\/tr>\n

Vecchio europeo<\/td>\nIT<\/td>\nFe360BFU<\/td>\n<\/tr>\n
Italia<\/td>\nUNI<\/td>\n\n

Fe330<\/p>\n

Fe360BFU<\/p>\n<\/td>\n<\/tr>\n

Spagna<\/td>\nUNE<\/td>\nAE235B-FU<\/td>\n<\/tr>\n
Cina<\/td>\nGB<\/td>\n\n

A3<\/p>\n

Q235<\/p>\n<\/td>\n<\/tr>\n

Svezia<\/td>\nSS<\/td>\n1312<\/td>\n<\/tr>\n
Polonia<\/td>\nPN<\/td>\nSt3SX<\/td>\n<\/tr>\n
Cechia<\/td>\nCSN<\/td>\n11343<\/p>\n

11373<\/td>\n<\/tr>\n

Austria<\/td>\nONORM<\/td>\n\n

St34RG<\/p>\n

St37F<\/p>\n

USt360B<\/p>\n<\/td>\n<\/tr>\n

Norvegia<\/td>\nNS<\/td>\nNS12-122<\/td>\n<\/tr>\n
Russia<\/td>\nGOST<\/td>\n\n

16D<\/p>\n

18kp<\/p>\n

St3kp<\/p>\n<\/td>\n<\/tr>\n

Inter<\/td>\nISO<\/td>\nFe360B<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"acciaio<\/p>","protected":false},"excerpt":{"rendered":"

L'acciaio al carbonio Q235, che ha un basso contenuto di carbonio, viene spesso utilizzato come acciaio strutturale, combinato con buone prestazioni di saldatura. L'acciaio \u00e8, come ASTM A36 negli Stati Uniti e S235JR in Europa, in modo completamente comparabile. L'acciaio Q235 \u00e8 solitamente carbonizzato fino al livello 0,2%, che \u00e8 combinato con manganese, silicio, zolfo e fosforo, ecc.<\/p>","protected":false},"author":1,"featured_media":7517,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Q235 Carbon Steel: Composition, Characteristics, and Applications - HDC Manufacturing","_seopress_titles_desc":"HDC Manufacturing is a professional custom metal parts supplier. We offer a variety of material options, including titanium alloys, stainless steel, copper, aluminum alloys, plastics, etc., to best meet your material requirements.","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[343],"class_list":["post-7513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","tag-acf-temp"],"acf":[],"_links":{"self":[{"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/posts\/7513","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/comments?post=7513"}],"version-history":[{"count":4,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/posts\/7513\/revisions"}],"predecessor-version":[{"id":103029,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/posts\/7513\/revisions\/103029"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/media\/7517"}],"wp:attachment":[{"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/media?parent=7513"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/categories?post=7513"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hdcmfg.com\/it\/wp-json\/wp\/v2\/tags?post=7513"}],"curies":[{"name":"scrivere","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}