AISI 5120 Steel — Specifications & Listings

AISI

American case hardening chrome steel per AISI standard. Close equivalent to 20MnCr5/EN10084 but with lower Mn (0.70-0.90%) and Cr (0.70-0.90%). Good case hardening response.

Forms: Round Bar Category: Alloy Steel

Grade Details

Grade	AISI 5120
Standard	AISI
Description	American case hardening chrome steel per AISI standard. Close equivalent to 20MnCr5/EN10084 but with lower Mn (0.70-0.90%) and Cr (0.70-0.90%). Good case hardening response.
Applications	Case hardened gears, pins, shafts, cams

Equivalent / Similar Grades

Grade	Standard	Region
20MnCr5	DIN	Germany
16MnCr5	DIN	Germany
SCr420	JIS	Japan

Chemical Composition (%)

C	Mn	Cr	Si
0.17–0.22	0.70–0.90	0.70–0.90	0.15–0.35

Mechanical Properties

Tensile Strength	750–950 MPa
Case Hardness HRC	58–62
Core Hardness HB	207–269

Typical Available Sizes

Round Bar	16mm–200mm dia
Flat Bar	20×8mm–150×40mm

Sizes are indicative. Contact seller for exact availability.

Active AISI 5120 Listings on M-EX

AISI 5120 Round Bar

3.000 MT

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