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| Carbon C: 0.18 ~ 0.24 |
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Silicon Si: 0.17 ~ 0.37 |
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Manganese Mn: 0.50-0.80 |
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Cr: 0.70 ~ 1.00 |
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Sulfur: allow residual content ≤ 0.035 |
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Phosphorus P: allowable residual content ≤ 0.035 |
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Nickel Ni: Allowable residual content ≤ 0.030 |
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Copper Cu: allow residual content ≤0.30 |
| China GB standard steel 20Cr |
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Japan JIS standard steel SCr22 |
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Germany DIN standard steel 20Cr4 |
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British BS standard steel 590M17 |
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France NF standard steel 18C3 |
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US AISI / SASTM standard steel 5120 |
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ISO standard steel No. 20Cr4 |
The first quenching heating temperature (℃): 880; coolant: water, oil
The second quenching heating temperature (℃): 780 ~ 820; Coolant: water, oil
Tempering heating temperature (℃): 200; coolant: water, empty
Tensile strength (σb / MPa): ≧ 835
Yield point (σs / MPa): ≧ 540
Elongation at break (δ5 /%): ≧ 10
Section shrinkage (ψ /%): ≧ 40
Impact energy (Aku2 / J): ≧ 47
Brinell hardness (HBS100 / 3000) (annealing or tempering temperature): ≦ 179
Thickness： 3-250mm
Width： 1220-4200mm
Length; 5000-18000mm
Notes: coil thickness ≤ 25m
To heat treatment (normalizing, annealing or tempering) or non-heat treatment delivery, delivery status should be specified in the contract. Welcome your enquiry if you are looking for the supplier of GB/T 3077 20Cr steel plate. GB/T 3077 20Cr steel plate can be supplied with high quality and good price by shanghai katalor industry.
