20Cr grade steel is a Chinese GB standard (GB/T 3077) alloy structural steel. 20Cr material density is 7.85 g/cm³.
GB 20Cr 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 standard specifies the classification and code, order content, size, shape, weight and allowable tolerance, technical requirements, test method, inspection rules, packaging, marking and quality certificate of alloy structure steel.
GB 3077 20Cr Chemical Composition
|
C |
Si |
Mn |
Cr |
|
0.18 -0.24 |
0.17-0.37 |
0.50-0.80 |
0.70-1.00 |
GB 3077 20Cr Mechanical Properties
|
Grade |
Mechanical Properties |
|
20Cr |
Yield Strength
Mpa |
Tensile Strength
Mpa |
Elongation
% |
Impact energy
J |
|
835 |
540 |
10 |
47 |
GB 3077 20Cr steel bars are supplied in hot rolled or forged condition. If required, they can be heat treatment(annealing, normalizing or high temperature tempering) condition.
As a professional GB 3077 20Cr alloy steel fabricator and exporter in China, SHANGHAI KATALOR can supply GB 20Cr alloy steel bars, 20Cr round and square bars with various sizes and quantity. If you are interested in 20Cr alloy steel products, welcome to send your requirement to us [email protected].
