30Cr grade steel is a Chinese GB standard (GB/T 3077) alloy structural steel.
30Cr material density is 7.85 g/cm³. GB 30Cr alloy steel is produced in hot rolled and forged alloy steel bars which are not more than 250mm of nominal diameter or thickness.
GB 3077 30Cr Steel Chemical Composition
|
Grade |
Chemical Composition |
|
30Cr |
The Element (%) |
|
C |
Si |
Mn |
Cr |
Mo |
Ni |
W |
B |
Al |
Ti |
V |
|
0.27 -0.34 |
0.17-0.37 |
0.50-0.80 |
0.80-1.10 |
- |
- |
- |
- |
- |
- |
- |
GB 3077 30Cr Mechanical Property
|
Grade |
Mechanical Property |
|
30Cr |
Yield Strength
Mpa |
Tensile Strength
Mpa |
Elongation
% |
Impact energy
J |
|
885 |
685 |
11 |
47 |
GB 3077 30Cr steel application
Grade 30Cr steel is usually used in quenched and tempered condition. This alloy can be used after normalizing to make important parts such as shafts, small shafts, balance levers, etc. 30Cr steel works under wear and friction conditions or under large impact loads. Rocker, connecting rod, bolt, nut, gear and various rollers. In addition, GB 3077 30Cr steel can also be used as a high-frequency surface hardening steel for parts requiring high surface hardness and wear resistance.
