EN41B Steel — Specifications & Listings

BS970:1955 — Nitriding steel, aluminium bearing

Category: Alloy Steel
Grade Details
GradeEN41B
StandardBS970:1955
DescriptionNitriding steel, aluminium bearing
ApplicationsNitrided gears, crankshafts, cylinder liners
Equivalent / Similar Grades
Grade Standard Region
41CrAlMo7 DIN Germany
AISI 7140 SAE USA
SACM645 JIS Japan
Chemical Composition (%)
C Mn Cr Al Mo
0.35–0.45 0.40–0.70 1.40–1.80 0.85–1.20 0.15–0.25
Mechanical Properties
Tensile Strength 850–1000 MPa
Surface Hardness HV ≥900 (nitrided)
Core Hardness HB 248–302
Typical Available Sizes
Round Bar 20mm–200mm dia
Sizes are indicative. Contact seller for exact availability.

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