2a简介
Romania STAS/SR Structure Steel 2a，及该型号钢材的基本信息、化学元素成分、机械性能、力学性能、热处理温度、同等型号参照表等。
基本信息：
| 分类 |
种类 |
型号 |
标准 |
国家 |
应用 |
|---|
| Steel Grades |
|
2a |
STAS/SR |
Romania |
Structural steel |
化学成分信息(mass fraction)(wt.%) of the 2a：
| 元素名称 |
含量比例值 |
|---|
| C |
0.16-0.23 |
| Si |
0.15-0.35 |
| Mn |
1.20-1.60 |
| P |
0.035 |
| S |
0.035 |
| Cr |
0.30 |
| Ni |
Max 0.30 |
机械性能信息：
| 屈服强度Rp0.2（MPa） |
抗拉强度Rm（MPa） |
冲击率 |
伸长率 |
断面收缩率 |
热处理状态 |
布氏硬度（HBW） |
|---|
| 737 (≥) |
833 (≥) |
14 |
41 |
41 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
141 |
物理性质信息：
| 温度 |
弹性模量 |
系数 |
热导率 |
比热容量 |
比电阻率 |
密度 |
加权系数 |
|---|
| 12 |
- |
- |
|
|
0.21 |
- |
|
| 242 |
686 |
- |
34.3 |
241 |
|
- |
|
| 552 |
- |
33 |
31.2 |
|
|
314 |
333 |
热处理信息：
| 热处理温度区间 |
|---|
| Heat treated : 1175°C - 1458°C |
对照表（同等等级）信息：
| 型号 |
标准 |
国家 |
应用 |
|---|
| 7Mn15Cr2A13V2WMo |
|
China |
Alloy tool steel - Without magnetic steel mold |
| W6Mo5Cr4V2Al |
|
China |
High-speed tool steel |
| T12A |
JIS |
Japan |
Carbide for cutting tools |
| T12A |
JIS |
Japan |
Carbide for cutting tools |
| BD2A |
|
UK |
Carbide for cutting tools |
| BD2A |
|
UK |
Carbide for cutting tools |
| BT1 |
|
UK |
Carbide for cutting tools |
| BT1 |
|
UK |
Carbide for cutting tools |
| у12A-1 |
ГОСТ |
Russia |
Carbide for cutting tools |
| у12A-1 |
ГОСТ |
Russia |
Carbide for cutting tools |
| у12A-2 |
ГОСТ |
Russia |
Carbide for cutting tools |
| у12A-2 |
ГОСТ |
Russia |
Carbide for cutting tools |
| у12A-3 |
ГОСТ |
Russia |
Carbide for cutting tools |
| у12A-3 |
ГОСТ |
Russia |
Carbide for cutting tools |
| SUS304N2A |
JIS |
Japan |
martensitic stainless steel |
| Z2CND25-22Az |
AFNOR |
France |
Stainless steel palte & Steel Strip |
| Z3CND17-12Az |
AFNOR |
France |
Stainless Steel Plate & Steel Strip |
| Z2CND25-22Az |
AFNOR |
France |
Stainless steel palte & Steel Strip |
| Z20CN21-12Az |
AFNOR |
France |
Steel Exhaust Valves |
| Z50CMNNb21-09-02Az |
AFNOR |
France |
Steel Exhaust Valves |
