70简介
China GBT Structure Steel 70,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 |
|
70 |
GBT |
China |
China structural steel and alloy steel |
化学成分信息(mass fraction)(wt.%) of the 70:
元素名称 |
含量比例值 |
C |
0.67-0.75 |
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) |
417 (≥) |
549 (≥) |
14 |
42 |
23 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
233 |
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 |
33 |
- |
- |
|
|
0.42 |
- |
|
741 |
968 |
- |
31.3 |
234 |
|
- |
|
979 |
- |
34 |
13.2 |
|
|
431 |
131 |
热处理信息:
热处理温度区间 |
Heat treated : 1333°C - 1261°C |
对照表(同等等级)信息:
型号 |
标准 |
国家 |
应用 |
UNS G10170 |
UNS |
USA |
General use carbon steel bar |
HAP 70 |
AISI |
USA |
Powder metallurgy high-speed tool steel |
C70W1 |
|
Germany |
Carbon tool steel |
C70W2 |
|
|
|
1.2703 |
DIN |
Germany |
Cold working alloy tool steel |
1.2709 |
DIN |
Germany |
Cold working alloy tool steel |
70Si7 |
DIN |
Germany |
Cold working alloy tool steel |
SK70 |
JIS |
Japan |
Carbon tool steel |
TC70 |
JIS |
Japan |
Carbon tool steel |
SS14:1770 |
SS |
Sweden |
Carbide for cutting tools |
SS14:1770 |
SS |
Sweden |
Carbide for cutting tools |
SS14:— |
SS |
Sweden |
Carbide for cutting tools |
SS14:— |
SS |
Sweden |
Carbide for cutting tools |
SS14:2700 |
SS |
Sweden |
Carbide for cutting tools |
SS14:2700 |
SS |
Sweden |
Carbide for cutting tools |
S14:2705 |
SS |
Sweden |
Carbide for cutting tools |
C70U |
|
|
|
C70U |
|
|
|
UNS S15700 |
UNS |
USA |
precipitation hardening |
UNS S15700 |
UNS |
USA |
precipitation hardening |