25簡介
China GBT Structure Steel 25，及該型號(hào)鋼材的基本信息、化學(xué)元素成分、機(jī)械性能、力學(xué)性能、熱處理溫度、同等型號(hào)參照表等。
基本信息：
| 分類 |
種類 |
型號(hào) |
標(biāo)準(zhǔn) |
國家 |
應(yīng)用 |
|---|
| Steel Grades |
|
25 |
GBT |
China |
China structural steel and alloy steel |
化學(xué)成分信息(mass fraction)(wt.%) of the 25：
| 元素名稱 |
含量比例值 |
|---|
| C |
0.22-0.29 |
| Si |
0.17-0.37 |
| Mn |
0.50-0.80 |
| P |
0.035 |
| S |
0.035 |
| Cr |
0.25 |
| Ni |
0.3 |
機(jī)械性能信息：
| 屈服強(qiáng)度Rp0.2（MPa） |
抗拉強(qiáng)度Rm（MPa） |
沖擊率 |
伸長率 |
斷面收縮率 |
熱處理狀態(tài) |
布氏硬度（HBW） |
|---|
| 248 (≥) |
961 (≥) |
34 |
21 |
43 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
122 |
物理性質(zhì)信息：
| 溫度 |
彈性模量 |
系數(shù) |
熱導(dǎo)率 |
比熱容量 |
比電阻率 |
密度 |
加權(quán)系數(shù) |
|---|
| 41 |
- |
- |
|
|
0.34 |
- |
|
| 698 |
826 |
- |
14.3 |
144 |
|
- |
|
| 418 |
- |
22 |
23.2 |
|
|
233 |
241 |
熱處理信息：
| 熱處理溫度區(qū)間 |
|---|
| Heat treated : 1289°C - 1215°C |
對照表（同等等級(jí)）信息：
| 型號(hào) |
標(biāo)準(zhǔn) |
國家 |
應(yīng)用 |
|---|
| Q255 A |
|
China |
Engineering and welding |
| Q255 B |
|
China |
Engineering and welding |
| H25 |
ASTM |
USA |
Alloy tool steel |
| T20825 |
UNS |
USA |
Alloy tool steel |
| CPM Rex 25 |
AISI |
USA |
Powder metallurgy high-speed tool steel |
| Stellite 25 |
|
|
Stellite alloy |
| Stellite 250 |
|
|
Stellite alloy |
| Stellite 251 |
|
|
Stellite alloy |
| 1.1525 |
|
|
|
| C125W |
|
|
|
| 1.1625 |
|
|
|
| 125Cr1 |
DIN |
Germany |
Cold working alloy tool steel |
| 125Cr2 |
DIN |
Germany |
Cold working alloy tool steel |
| 125CrSi5 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2510 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2516 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2519 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2542 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2550 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2552 |
DIN |
Germany |
Cold working alloy tool steel |
