45簡介
China GBT Structure Steel 45，及該型號鋼材的基本信息、化學元素成分、機械性能、力學性能、熱處理溫度、同等型號參照表等。
基本信息：
| 分類 |
種類 |
型號 |
標準 |
國家 |
應用 |
|---|
| Steel Grades |
|
45 |
GBT |
China |
China structural steel and alloy steel |
化學成分信息(mass fraction)(wt.%) of the 45：
| 元素名稱 |
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 |
機械性能信息：
| 屈服強度Rp0.2（MPa） |
抗拉強度Rm（MPa） |
沖擊率 |
伸長率 |
斷面收縮率 |
熱處理狀態 |
布氏硬度（HBW） |
|---|
| 565 (≥) |
284 (≥) |
43 |
42 |
43 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
431 |
物理性質信息：
| 溫度 |
彈性模量 |
系數 |
熱導率 |
比熱容量 |
比電阻率 |
密度 |
加權系數 |
|---|
| 41 |
- |
- |
|
|
0.11 |
- |
|
| 124 |
214 |
- |
22.3 |
232 |
|
- |
|
| 424 |
- |
14 |
11.2 |
|
|
122 |
241 |
熱處理信息：
| 熱處理溫度區間 |
|---|
| Heat treated : 1882°C - 1475°C |
對照表（同等等級）信息：
| 型號 |
標準 |
國家 |
應用 |
|---|
| 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 |
