China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steelis a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality low carbon,Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. GB 20Cr steel Annealing delivery hardenss less than 250HB.20Cr With a lower carbon content range, So GB 20Cr alloy steel have good weldability.
BBN steel as China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel stockholders and suppliers from china.we can Supply in GB 20Cr steel round bar, plate, sheet, square bar, flat bar, pipe since 2007.our steel stock more 1000tons.
20Cr Alloy Structure Steel applicaiton,China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel is widely used for a variety of applications in the used in the automotive and engineering industries for toolholders and other such components. Mostly used in the manufacture of the demand is higher, intensity of heart surface wear, under section under 30 mm or small carburized parts of complex shape and load (oil quenching), such as: transmission gear, gear shaft, CAM, worm, piston pin, claw clutch, etc.; For the heat treatment deformation and high abrasion resistance parts, should be high frequency surface quenching after carburizing, such as modulus is less than 3 of the gear, shaft, spline shaft, etc. This steel can be used in the quenched and tempered state and used in the manufacture of large and medium under impact load in her work parts, this kind of steel also can be used as a low carbon martensite steel quenching, further increasing steel yield strength and tensile strength increased (about 1.5 ~ 1.7 times). Typical applications such as valve bodies, pumps and fittings, Shaft, the high load of wheel, bolts, double-headed bolts, gears, etc
GB/T 3077 20Cr Alloy Structure Steel Chemical composition:
| C(％) | 0.18～0.24 | Si(％) | 0.17～0.37 | Mn(％) | 0.50～0.80 | P(％) | ≤0.030 |
| S(％) | ≤0.030 | Cr(％) | 0.70～1.10 |
GB/T 3077 20Cr Alloy Structure Steel Equivalent Of 20Cr alloy Structure Steel:
| USA | Germany | China | Japan | France | England | Italy | Poland | ISO | Austria | Sweden | Spain |
| ASTM/AISI/UNS/SAE | DIN,WNr | GB | JIS | AFNOR | BS | UNI | PN | ISO | ONORM | SS | UNE |
| 5120 / G51200 | 20Cr4 / 1.7027 | 20Cr | SCr420 | 18C3 | 527A20 | 20Cr4 |
GB/T 3077 20Cr Alloy Structure Steel Mechanical Properties:
| Tensile strength | Yield strength | Elongation | Reduction of area | Poisson’s ratio | Impact absorbing energy |
| σb/MPa | σs/MPa | δ5(％) | ψ(％) | AKV/J | |
| 835 | 540 | 10 min | 40 min | 0.27-0.30 | 47 Min |
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Bebon International is a professional China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel steel exporter and a steel Stockist in china. We keep more than 1000 tons China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel steel in stock every month. If you want to get the China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel steel price, please do not hesitate to contact us. Any need in China Steel Grade Standard GB/T 3077 20Cr Alloy Structure Steel Chemical Composition and Mechanical Properties, please feel free to contact us by email or calling to us.
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