5025

Alloy Steel

5025

(AA 5xxx). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.21
CR0.3
MN0.6
SI0.1
P0.04
S0.05

Mechanical Properties

Tensile:≥585 MPa;Yield:≥350 MPa;Elong:≥18%

Equivalent Grades

AA 5xxx 5025

Available Forms

Bar,Plate

Uses

Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Chromium (≈0.4%) improves hardenability, wear and corrosion resistance. Applied to gears, shafts, bolts, connecting rods, pressure parts and heavy forgings in automotive, energy and machinery sectors.

Heat Treatment

Typically normalized (880–920 °C, air cool) or carburized (900–930 °C) for case-hardening grades, then quenched and tempered at 150–200 °C.

Precautions

Weldable with standard procedures; preheat may be needed for thick sections or higher-carbon/ alloy grades. Protect from decarburization during heating (controlled atmosphere or protective coating).

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