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SAE 5120 Steel — Specifications & Listings

SAEAmerican case hardening chrome steel per SAE standard. Close equivalent to 20MnCr5 but with lower Mn and Cr content. Good case hardening response.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeSAE 5120
StandardSAE
DescriptionAmerican case hardening chrome steel per SAE standard. Close equivalent to 20MnCr5 but with lower Mn and Cr content. Good case hardening response.
ApplicationsCase hardened gears, pins, shafts, cams, automotive transmission parts
Chemical Composition (%)
C Mn Cr Si S P
0.17–0.22 0.70–0.90 0.70–0.90 0.15–0.35 ≤0.040 ≤0.035
Mechanical Properties
Tensile Strength 750–950 MPa
Case Hardness HRC 58–62
Core Hardness HB 207–269
Elongation ≥10%
Typical Available Sizes
Round Bar 16mm–200mm dia
Flat Bar 20×8mm–150×40mm
Sizes are indicative. Contact seller for exact availability.

Active SAE 5120 Listings on M-EX

SAE 5120 Round Bar
2.700 MT
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SAE 5120 Round Bar
2.000 MT
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