WNM400牌号属于舞钢产高级别调质型耐磨钢板；其牌号等级高于WNM360。
用途：主要用于矿山、煤矿、环保、通风设备、自卸卡车及各种工程机械用耐磨易损件加工和制造等使用的结构钢板。
牌号表示方法：钢板牌号由代表生产厂家、用途、硬度及质量等级等四个部分按顺序组成，例如：WNM400A，WNM400B等
符号：W-----表示舞阳钢铁有限责任公司的“舞”字汉语拼音的首位字母；
NM----表示耐磨用途的“耐”和“磨”字汉语拼音首位字母；
A、B--分别为质量等级，同时A代表钢板不做冲击，B代表钢板做20度常温冲击；
交货状态：淬火+回火
WNM400化学成分：
|
化学元素/等级 |
A |
B |
|
C |
≤0.25 |
≤0.25 |
|
Si |
≤0.70 |
≤0.70 |
|
Mn |
≤1.60 |
≤1.60 |
|
P |
≤0.025 |
≤0.025 |
|
S |
≤0.010 |
≤0.010 |
|
Mo |
≤0.50 |
≤0.50 |
|
Cr |
≤1.40 |
≤1.00 |
|
Ni |
—— |
≤1.00 |
|
B |
≤0.004 |
≤0.004 |
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