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20CrNiMo Alloy Structural Steel

20CrNiMo Alloy Structural Steel

Place of Origin : China
Brand Name : XJS
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Description:

20CrNiMo alloy structural steel is under GB/T 3077 chinese standard, belongs to a high carbon nitrided steel.

20CrNiMo are produced under the following procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + GB/T6402-92 ΙΙ UT test + smooth edges with sawing .

chemical composition:


Grade

C

Si

Mn

Cr

Ni

Mo

Cu

P

S

20CrNiMo

0.17-0.23

0.17-0.37

0.6-0.95

0.4-0.7

0.35-0.75

0.2-0.3

≤ 0.3

≤0.035

≤0.035

mechanical properties


Grade

T.S.
N/mm2
Min

Y.S.
N/mm2
Min

A,%
Min

Z,%
Min

Hardness,
(annealing or tempering) HB,max

Forging ratio

Grain Size
(level)

Nonmetal ratio

20CrNiMo

980

785

9

40

197

≥ 4:1

≥ 6

≤ 2.0


Heat treatment:

quenching(℃):850;oil cooling

tempering(℃):200;air cooling


Application:

20CrNiMo is mainly for manufacturing shock absorber which works in

quaking load, such as elastic axis, torsion shaft of heavy-duty car and driving truck. This grade has excellent hardenability, without temper brittleness, good weldability, super machinability and ductility. 20CrNiMo is generally used in quenching and tempering or carburizing and quenching delivery state.


Product Tags:

Alloy Structural Steel

      
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