BS 970:1955 EN30A Steel — Specifications & Listings

BS 970:1955

EN30A is a nickel-chromium-molybdenum alloy steel designed for carburizing and high core strength applications. It provides good toughness, fatigue resistance, and wear resistance after heat treatment.

Category: Alloy Steel

Grade Details

Grade	BS 970:1955 EN30A
Standard	BS 970:1955
Description	EN30A is a nickel-chromium-molybdenum alloy steel designed for carburizing and high core strength applications. It provides good toughness, fatigue resistance, and wear resistance after heat treatment.
Applications	Used for gears, aircraft components, transmission shafts, heavy-duty pinions, crankshafts, and high-strength fasteners.

Chemical Composition (%)

C	Mn	Si	Ni	Cr	Mo	S	P
0.26-0.34	0.45-0.70	0.10-0.35	3.00-4.00	1.00-1.40	0.20-0.35	0.050 max	0.050 max

Mechanical Properties

tensile_strength	850-1000 MPa
yield_strength	650-850 MPa
elongation	10-14%
hardness	248-302 HB

Active BS 970:1955 EN30A Listings on M-EX

No active BS 970:1955 EN30A listings at this time.