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SAE J404 52100 / SAE 52100 Steel - Specifications & Listings

SAE J404 52100: High carbon chromium bearing steel per SAE standard. American equivalent of EN31. Excellent wear resistance and high hardness after heat treatment. Primary steel for rolling element bearings.

Forms: Round Bar Forging Category: Alloy Steel
Grade Details
GradeSAE J404 52100 / SAE 52100
StandardSAE J404
DescriptionHigh carbon chromium bearing steel per SAE standard. American equivalent of EN31. Excellent wear resistance and high hardness after heat treatment. Primary steel for rolling element bearings.
ApplicationsBall bearings, roller bearings, races, bushings, precision tooling, dies, gauges
Market Snapshot
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▲ +0.7%
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Round Bar →
Balanced
Forging →
Supply, no demand
Chemical Composition (%)
C Mn Cr Si S P
0.95–1.10 0.25–0.45 1.30–1.60 0.15–0.35 ≤0.025 ≤0.025
Mechanical Properties
Tensile Strength 620–780 MPa (annealed)
Hardness (annealed) ≤207 HB
Hardness (hardened) 60–66 HRC
Elongation ≥15% (annealed)
Typical Available Sizes
Round Bar 18mm–250mm dia
Forging Custom sizes
Sizes are indicative. Contact seller for exact availability.
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Active SAE J404 52100 / SAE 52100 Listings on M-EX (For Sale)

SAE J404 52100 / SAE 52100 Round Bar
3.800 MT
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SAE J404 52100 / SAE 52100 Round Bar
2.600 MT
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