对于钢材来说，钢材不止是用于建房中，我们在各种建筑中也随时可以看到钢材的身影，对于钢材的型号很多，下面 济钢一级代理商厂家的小编带大家来看钢材分类。
For steel, steel is not only used in building, we in all kinds of buildings can always see the figure of the steel, steel for many models, the following Jinan agents manufacturers Xiaobian take you to see the steel classification.
钢材应用广泛、品种繁多，参照的标准不同，划分出的钢材种类也不同。其主要分类有如下七种：
Widely used in steel, a wide range of products, the standard of reference is different, the types of steel are also different. The main categories are as follows: seven:
1、按品质分类
1, according to quality classification
(1) 普通钢（P≤0.045%，S≤0.050%）
(1) ordinary steel (P = 0.045%, S = 0.050%)
(2) 优质钢（P、S均≤0.035%）
(2) high quality steel (P, S = 0.035%)
(3) 高级优质钢（P≤0.035%，S≤0.030%）
(3) high quality steel (P = 0.035%, S = 0.030%)

2、按化学成份分类
2, according to chemical classification
(1) 碳素钢：低碳钢（C≤0.25%）；中碳钢（C≤0.25-0.60%）；高碳钢（C≥0.60%）。
(1): carbon steel low carbon steel (C = 0.25%); carbon steel (C = 0.25-0.60%); high carbon steel (C = 0.60%).
(2) 合金钢：低合金钢（合金元素总含量≤5%）；中合金钢（合金元素总含量>5-10%）；高合金钢（合金元素总含量>10%）。
(2): alloy steel, low alloy steel (alloy element content is less than or equal to 5%); in the alloy (>5-10% alloy element content; high alloy steel (>10%) alloy element content).
3、按成形方法分类： (1) 锻钢 (2) 铸钢 (3) 热轧钢 (4) 冷拉钢。
3, according to the forming method classification: (1) forged steel (2), cast steel (3), hot rolled steel (4), cold drawn steel.
4、按金相组织分类
4. Classification according to metallographic structure
(1) 退火状态的：亚共析钢（铁素体+珠光体）；共析钢（珠光体）；过共析钢（珠光体+渗碳体）；莱氏体钢（珠光体+渗碳体）
(1) annealed state: hypo eutectoid steel (ferrite + Zhu Guangti); eutectoid steel (Zhu Guangti); eutectoid steel (Zhu Guangti + cementite); bainitic steel (Zhu Guangti + cementite)
(2) 正火状态的：珠光体钢；贝氏体钢；马氏体钢；奥氏体钢。
(2) normalized condition: pearlitic steel; bainite steel; martensitic steel; austenitic steel.
(3) 无相变或部分发生相变的。
(3) without phase change or part of phase change.
5、按用途分类
5. Classification by purpose
(1) 建筑及工程用钢：普通碳素结构钢；低合金结构钢；钢筋钢。
(1) building and engineering steel: plain carbon structural steel; low-alloy structural steel; reinforced steel.
(2) 结构钢
(2) structural steel
(3) 工具钢：碳素工具钢；合金工具钢；高速工具钢。
(3) tool steel: carbon tool steel; alloy tool steel; high speed tool steel.
(4) 特殊性能钢：不锈耐酸钢；耐热钢：包括抗氧化钢、热强钢、气阀钢；电热合金钢；耐磨钢；低温用钢；电工用钢。
(4) special performance steel: stainless acid resistant steel; heat-resistant steel: including oxidation resistant steel, hot strong steel, air valve steel; electrothermal alloy steel; wear resistant steel; low temperature steel; electrical steel.
(5) 专业用钢: 如桥梁用钢、船舶用钢、锅炉用钢、压力容器用钢、农机用钢等。
(5) professional steel: such as bridge steel, shipbuilding steel, boiler steel, pressure vessel steel, agricultural machinery steel and so on.
6、综合分类：(1)普通钢 (2)优质钢
6. Comprehensive classification: (1) ordinary steel (2) high quality steel
7、按冶炼方法分类
7, according to smelting method classification
(1) 按炉种分：a.平炉钢 b.转炉钢 c. 电炉钢
(1) according to the furnace types: A. steel B. steel C. steel
(2)按脱氧分：沸腾钢；半镇静钢；镇静钢；特殊镇静钢。
(2) according to deoxidation points: rimmed steel; semi killed steel; killed steel; special killed steel.
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