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 高強度鋼板是指牌號Q420鋼，強度高，特別是在正火或正火加回火狀態(tài)有較高的綜合力學(xué)性能。主要用于大型船舶，橋梁，電站設(shè)備，中、高壓鍋爐，高壓容器，機車車輛，起重機械，礦山機械及其他大型焊接結(jié)構(gòu)件。
High strength steel plate is refers to the brand of Q420 steel, high strength, especially in normalizing or normalized and tempered condition have higher comprehensive mechanical properties. Mainly used for large ships, Bridges, power station equipment, medium and high pressure boiler, pressure vessel, rolling stock, hoisting machinery, mining machinery and other large welded structure.
牌號Q460鋼，強度最高，在正火，正火加回火或淬火加回火狀態(tài)有很高的綜合力學(xué)性能，全部用鋁補充脫氧，質(zhì)量等級為C、D、E級，可保證鋼的良好韌性的備用鋼種。用于各種大型工程結(jié)構(gòu)及要求強度高，載荷大的輕型結(jié)構(gòu)。
Brand Q460 steel, the highest intensity, in normalizing, normalized and tempered or quenched and tempered state has high comprehensive mechanical properties, all deoxidization with aluminium added, quality grade for C, D, E, can guarantee the good toughness of steel spare material. Used for all kinds of large engineering structures and require high strength, large load of lightweight structure.

Q460是一種高強度的低合金鋼。Q460的牌號表示方法：它的鋼號冠以“Q”，代表鋼材的屈服點，即屈服強度。后面的數(shù)字表示屈服點數(shù)值460代表460兆帕，兆是10的6次方，帕是壓強單位帕斯卡。Q460就是鋼材受力強度達(dá)到460兆帕?xí)r才會發(fā)生塑性變形，也就是當(dāng)外力泄掉后，鋼材只能保持受力的形狀而無法回復(fù)原形，這個強度要比一般鋼材大。一般質(zhì)量等級符號分別為A、B、C、D、E　Q460在保證低碳當(dāng)量的基礎(chǔ)上，適當(dāng)?shù)脑黾恿宋⒑辖鹪氐暮俊Ａ己玫暮附有阅芤箐摬奶籍?dāng)量低，而微合金元素的增加在增加鋼材強度的同時，也會增加鋼材的碳當(dāng)量。但好在增加的碳當(dāng)量很少，所以不會影響鋼材的焊接性能。
Q460 is a kind of high strength low alloy steel. Q460 brand representation: its steel grade dubbed "Q", on behalf of the steel yield point, yield strength. The Numbers behind the 460 represents 460 million mpa, yield point value is 10 power 6, palmer is PASCAL pressure units. Is Q460 steel occurs when the stress strength of 460 million mpa plastic deformation, which is when the external force drain off after the steel base can only maintain the shape of the stress and cannot be undone, this intensity is bigger than general steel. General quality level symbol of A, B, C, D, respectively EQ460 based on low carbon equivalent, appropriate to increase the content of micro alloying elements. Good welding performance of steel low carbon equivalent, and the increase of micro alloying elements in steel strength at the same time, also increase the carbon equivalent of steel. But fortunately very little increase of carbon equivalent, so will not affect the welding performance of steel.
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