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问:什么是普通低合金钢?它与含锰量较高的优质碳素钢及合金结构钢中的锰钢与硅锰钢有什么区别? 答:普通低合金钢是在普通碳素钢的基础上加入少量的一种或多种合金元素(总量不超过2.5％),达到提高强度、耐蚀性、耐磨性或低温靱性的目的,并便于大量生产和应用的钢种。它和机器制造用的合金结构钢的区别是用户一般不再进行热处理和车鉋铣磨等工序便可直接使用。问:推广的14种普通低合金钢可以代用哪些普碳钢? 答:推广的14种普通低合金钢,主要可以代用三种碳素钢:船舶、桥梁、容器、建筑等使用的“钢三”、“钢四”;作钢筋用的“钢五”和铺铁道用的重轨钢。
Q: What is the ordinary low-alloy steel? It with higher manganese content of high-quality carbon steel and alloy steel in the manganese and silicon manganese steel What is the difference? A: ordinary low-alloy steel is ordinary carbon steel Based on the addition of a small amount of one or more alloying elements (the total amount of not more than 2.5%), to achieve the purpose of improving strength, corrosion resistance, wear resistance or low temperature, and easy to mass production and application of steel. The difference between it and the alloy steel used in machine construction is that the user generally can not directly use the process such as heat treatment and car shaving milling. Q: Which general-purpose low-alloy steels to be promoted can be replaced with those of general-purpose carbon steels? A: The 14 commonly used low-alloy steels to be promoted are mainly three types of carbon steels: ships, bridges, containers, “,” Steel IV “; for the steel with” steel five "and railroad heavy rail steel.