GB/T 3077 12Cr2Ni4A Steel — Specifications & Listings

GB/T 3077

12Cr2Ni4A is a low carbon alloy carburizing steel with excellent toughness and deep hardenability. The grade is used for heavily loaded transmission and aerospace components.

Category: Alloy Steel

Grade Details

Grade	GB/T 3077 12Cr2Ni4A
Standard	GB/T 3077
Description	12Cr2Ni4A is a low carbon alloy carburizing steel with excellent toughness and deep hardenability. The grade is used for heavily loaded transmission and aerospace components.
Applications	Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.

Chemical Composition (%)

C	Si	Mn	Cr	Ni	P	S
0.10-0.15	0.17-0.37	0.30-0.60	1.25-1.65	3.25-3.75	0.025 max	0.025 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 12Cr2Ni4A Listings on M-EX

No active GB/T 3077 12Cr2Ni4A listings at this time.