直径A Diameter	原棒尺寸 Fullsize Round Bar	直径尺寸公差 Tolerance for Diameter	调质Hardening And Tempering	制造方法 Method of Manufacturing	每米重量 Weight Per Meter(KG)
10	2000或4000	±0.30	—	热轧后酸铣 Hydrochloric Treatment after Hot  Rolling	0.605
16	2000或4000	±0.40	—	热轧后酸铣 Hydrochloric Treatment after Hot  Rolling	1.548
22	2000或4000	±0.40	—	热轧后去渣皮Removing Slag Skull after Hot Rolling	2.927
25	2000或4000	±0.40	—	热轧后去渣皮Removing Slag Skull after Hot Rolling	3.780
32	2000或4000	±0.50	—	热轧后去渣皮Removing Slag Skull after Hot Rolling	6.193
40	2000或4000	±0.60	—	热轧后去渣皮Removing Slag Skull after Hot Rolling	9.676
50	2000或4000	±0.60	—	热轧后去渣皮Removing Slag Skull after Hot Rolling	15.12

数据（参考值）Data

特性 Mechanical Properties
布氏硬度 Brinell Hardness	比重Specific Density	热传导率Hot   Conduction Degree	纤细膨胀系数 SLinear Expansion Coefficient
269以下Below	7.7	24.2	10.2

化学成分（%）Chemical Composition（%）
C	Si	Mn	P	S	Ni	Cr	Mo	Cu	Fe	其他Miscellaneous
0.95~1.2	1以下Below	1以下Below	0.04以下Below	0.03以下Below	0.6以下Below	16~18	能添加0.75%以下Addable Below 0.75%	—	剩余Residual	—

概述 Summarization
属于奥氏体系的不锈钢。在所有不锈钢，耐热钢中具有最高的硬度。主要用于喷嘴及轴承等部件。
440C Round Bar is a part of Martensitic stainless steel serial . 440C Round Bar is the hardest one within all stainless steel and heat-resisting teel range . This product is wisely used in axle , axle shaft and spray nozzle.
进货商品（尺寸）信息Information for Purchase of Goods（Size）
以下尺寸也能从日本进货 The goods in the following sizes may also be purchased from Japan.