GB/T 3077 20CrNiMo Steel — Specifications & Listings

GB/T 3077

20CrNiMo is a nickel chromium molybdenum alloy carburizing steel with excellent fatigue and impact resistance. The grade is suitable for heavily loaded gears and power transmission parts.

Category: Alloy Steel

Grade Details

Grade	GB/T 3077 20CrNiMo
Standard	GB/T 3077
Description	20CrNiMo is a nickel chromium molybdenum alloy carburizing steel with excellent fatigue and impact resistance. The grade is suitable for heavily loaded gears and power transmission parts.
Applications	Used for carburized gears, shafts, heavy-duty pinions, gearbox components, couplings, and bearings.

Chemical Composition (%)

C	Si	Mn	Cr	Ni	Mo	P	S
0.17-0.23	0.17-0.37	0.40-0.70	0.35-0.65	0.40-0.70	0.15-0.25	0.030 max	0.030 max

Mechanical Properties

tensile_strength	980-1180 MPa
yield_strength	785-980 MPa
elongation	10-14%
hardness	58-62 HRC (case)

Active GB/T 3077 20CrNiMo Listings on M-EX

No active GB/T 3077 20CrNiMo listings at this time.