GOST 4543 12HN3A Steel — Specifications & Listings

GOST 4543

12HN3A is a carburizing alloy steel with nickel and chromium additions for high core toughness. It provides excellent fatigue resistance after case hardening.

Category: Alloy Steel

Grade Details

Grade	GOST 4543 12HN3A
Standard	GOST 4543
Description	12HN3A is a carburizing alloy steel with nickel and chromium additions for high core toughness. It provides excellent fatigue resistance after case hardening.
Applications	Used for gears, pinions, crankshafts, aircraft parts, and transmission components.

Chemical Composition (%)

C	Cr	Ni	Mn	Si
0.09-0.16	0.6-0.9	2.75-3.15	0.3-0.6	0.17-0.37

Mechanical Properties

tensile_strength	850-1050 MPa
yield_strength	685 MPa min
elongation	11% min
hardness	58-62 HRC (case)

Active GOST 4543 12HN3A Listings on M-EX

No active GOST 4543 12HN3A listings at this time.