直径A Diameter	原棒尺寸 Fullsize Round Bar	直径尺寸公差 Tolerance for Diameter	制造方法 Method of Manufacturing	每米重量 Weight Per Meter(KG)
4	2100	-0.012~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.100
5	2100	-0.012~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.156
6	2100	-0.012~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.225
7	2100	-0.015~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.306
8	2100	-0.015~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.399
9	2100	-0.015~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.505
10	2100	-0.015~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.623
12	2100	-0.018~0	热轧后无心研磨Centerless Grinding after Hot Rolling	0.897
15	2100	-0.018~0	热轧后无心研磨Centerless Grinding after Hot Rolling	1.402
18	2100	-0.018~0	热轧后无心研磨Centerless Grinding after Hot Rolling	2.018
20	2000	-0.021~0	热轧后无心研磨Centerless Grinding after Hot Rolling	2.492
22	2000	-0.021~0	热轧后无心研磨Centerless Grinding after Hot Rolling	3.015
25	2000	-0.021~0	热轧后无心研磨Centerless Grinding after Hot Rolling	3.893
30	2000	-0.021~0	热轧后无心研磨Centerless Grinding after Hot Rolling	5.606

数据（参考值）Data

特性 Mechanical Properties
比重Specific Density	热传导度Thermal  Conduction Degree	纤细膨胀系数 SLinear Expansion Coefficient
7.93	16.3	17.3

化学成分（%）Chemical Composition（%）
C	Si	Mn	P	S	Ni	Cr	Mo	Cu	Fe	其他Miscellaneous
0.15以下Below	1以下Below	2以下Below	0.2以下Below	0.15以下Below	8~10	17~19	能添加Mo0.6%以下 Addable Below 0.6%	—	剩余Residual	—

概述 Summarization
通常无心•研磨用CG来记述也很常见，“研磨”是指用二块磨石来进行切削。尺度精准，表面光洁度，真圆度要比冷拔品来的优秀。
It is representation CG .mean Centerless ,Grinding .It is good accuracy ,compare with Cold Drawing.
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.