AISI 4320 Steel — Specifications & Listings

AISI

AISI 4320 is a nickel-chromium-molybdenum alloy steel with excellent toughness and fatigue resistance. It is widely used for carburized high-strength components.

Category: Alloy Steel

Grade Details

Grade	AISI 4320
Standard	AISI
Description	AISI 4320 is a nickel-chromium-molybdenum alloy steel with excellent toughness and fatigue resistance. It is widely used for carburized high-strength components.
Applications	Used for gears, shafts, aircraft components, pinions, axles, and transmission parts.

Chemical Composition (%)

C	Mn	Si	Ni	Cr	Mo	P	S
0.17-0.22	0.45-0.65	0.15-0.35	1.65-2.00	0.40-0.60	0.20-0.30	0.035 max	0.040 max

Mechanical Properties

tensile_strength	850-1050 MPa
yield_strength	650-850 MPa
elongation	12-18%
hardness	220-300 HB

Active AISI 4320 Listings on M-EX

No active AISI 4320 listings at this time.