75簡(jiǎn)介
China GBT Structure Steel 75，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(guó)家 |
應(yīng)用 |
|---|
| Steel Grades |
|
75 |
GBT |
China |
China structural steel and alloy steel |
化學(xué)成分信息(mass fraction)(wt.%) of the 75：
| 元素名稱 |
含量比例值 |
|---|
| C |
0.72-0.80 |
| 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(zhǎng)率 |
斷面收縮率 |
熱處理狀態(tài) |
布氏硬度（HBW） |
|---|
| 434 (≥) |
284 (≥) |
32 |
34 |
21 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
432 |
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) |
|---|
| 21 |
- |
- |
|
|
0.31 |
- |
|
| 294 |
576 |
- |
14.3 |
222 |
|
- |
|
| 319 |
- |
12 |
32.2 |
|
|
131 |
224 |
熱處理信息：
| 熱處理溫度區(qū)間 |
|---|
| Heat treated : 1518°C - 1581°C |
對(duì)照表（同等等級(jí)）信息：
| 型號(hào) |
標(biāo)準(zhǔn) |
國(guó)家 |
應(yīng)用 |
|---|
| Q275 |
GBT |
China |
China structural steel and alloy steel |
| C75W |
|
|
|
| 1.1750 |
|
|
|
| 75Cr1 |
DIN |
Germany |
Cold working alloy tool steel |
| 75CrMoNiW6-7 |
DIN |
Germany |
Cold working alloy tool steel |
| SK75 |
JIS |
Japan |
Carbon tool steel |
| SS14:2750① |
SS |
Sweden |
Carbide for cutting tools |
| SS14:2750① |
SS |
Sweden |
Carbide for cutting tools |
| SS14:2752 |
SS |
Sweden |
Carbide for cutting tools |
| SS14:2752 |
SS |
Sweden |
Carbide for cutting tools |
| S14:2754① |
SS |
Sweden |
Carbide for cutting tools |
| S14:2754① |
SS |
Sweden |
Carbide for cutting tools |
| SS14:2756① |
SS |
Sweden |
Carbide for cutting tools |
| SS14:2756① |
SS |
Sweden |
Carbide for cutting tools |
| CT75 |
SS |
Sweden |
Carbide for cutting tools |
| CT75 |
SS |
Sweden |
Carbide for cutting tools |
| Type440FSe |
UNS |
USA |
Martensitic special steel |
| Type440FSe |
UNS |
USA |
Martensitic special steel |
| UNS N07500 |
UNS |
USA |
precipitation hardening |
| UNS N07750 |
UNS |
USA |
precipitation hardening |
