UNI 7846 18CrMo4 Steel — Specifications & Listings

UNI 7846

18CrMo4 is a chromium molybdenum carburizing steel with good hardenability and fatigue resistance. It is widely used for case hardened transmission components.

Category: Alloy Steel

Grade Details

Grade	UNI 7846 18CrMo4
Standard	UNI 7846
Description	18CrMo4 is a chromium molybdenum carburizing steel with good hardenability and fatigue resistance. It is widely used for case hardened transmission components.
Applications	Used in gears, shafts, pinions, crankshafts, axles, and heavy machinery components.

Chemical Composition (%)

C	Si	Mn	Cr	Mo	P	S
0.15-0.21	0.15-0.40	0.60-0.90	0.90-1.20	0.15-0.30	0.035 max	0.035 max

Mechanical Properties

tensile_strength	700-900 MPa
yield_strength	540 MPa min
elongation	14% min
hardness	200-260 HB

Active UNI 7846 18CrMo4 Listings on M-EX

No active UNI 7846 18CrMo4 listings at this time.