45简介
China GBT Structure Steel 45，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 |
|
45 |
GBT |
China |
China structural steel and alloy steel |
化学成分信息(mass fraction)(wt.%) of the 45：
| 元素名称 |
含量比例值 |
|---|
| C |
0.42-0.50 |
| Si |
0.17-0.37 |
| Mn |
0.50-0.80 |
| P |
0.035 |
| S |
0.035 |
| Cr |
0.25 |
| Ni |
0.3 |
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） |
|---|
| 565 (≥) |
284 (≥) |
43 |
42 |
43 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
431 |
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 |
|---|
| 41 |
- |
- |
|
|
0.11 |
- |
|
| 124 |
214 |
- |
22.3 |
232 |
|
- |
|
| 424 |
- |
14 |
11.2 |
|
|
122 |
241 |
热处理信息：
| 热处理温度区间 |
|---|
| Heat treated : 1882°C - 1475°C |
对照表（同等等级）信息：
| 型号 |
标准 |
国家 |
应用 |
|---|
| Q345q E |
|
China |
Bridge structure with steel |
| Q345q C |
|
China |
Bridge structure with steel |
| SM45 |
|
China |
Plastic mould with flat steel |
| SM45A |
|
China |
Plastic mould with Hot-rolled steel plate |
| CPM Rex 45 |
AISI |
USA |
Powder metallurgy high-speed tool steel |
| CPM Rex 45HS |
AISI |
USA |
Powder metallurgy high-speed tool steel |
| 1.1545 |
|
|
|
| 1.1645 |
|
|
|
| C45W |
|
|
|
| 145Cr6 |
DIN |
Germany |
Cold working alloy tool steel |
| 45SiCrV6 |
DIN |
Germany |
Cold working alloy tool steel |
| 45CrMoV7 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2453 |
DIN |
Germany |
Cold working alloy tool steel |
| 45WCrV7 |
DIN |
Germany |
Cold working alloy tool steel |
| 45NiCr6 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2745 |
DIN |
Germany |
Cold working alloy tool steel |
| 45NiCrMoV16-6 |
DIN |
Germany |
Cold working alloy tool steel |
| X45NiCrMo4 |
DIN |
Germany |
Cold working alloy tool steel |
| 145V33 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2345 |
DIN |
Germany |
Hot working alloy tool steel |
