GB/T 3077 20CrMo Steel — Specifications & Listings

GB/T 3077

20CrMo is a low alloy carburizing steel with good hardenability and wear resistance. The grade offers high surface hardness with a strong and tough core after heat treatment.

Category: Alloy Steel

Grade Details

Grade	GB/T 3077 20CrMo
Standard	GB/T 3077
Description	20CrMo is a low alloy carburizing steel with good hardenability and wear resistance. The grade offers high surface hardness with a strong and tough core after heat treatment.
Applications	Used for gears, shafts, axles, transmission parts, fasteners, and machine components.

Chemical Composition (%)

C	Si	Mn	Cr	Mo	P	S
0.17-0.24	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	0.030 max	0.030 max

Mechanical Properties

tensile_strength	835-1030 MPa
yield_strength	540-835 MPa
elongation	10-15%
hardness	56-62 HRC (case)

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

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