15MnVN

Alloy Steel

15MnVN

(GB/T 3077). Nominal values—confirm mill certificate.

Chemical Composition (%)

C0.12
MN0.7
V0.7
P0.035
S0.035

Mechanical Properties

Tensile:≥510 MPa;Yield:≥295 MPa;Elong:≥20%

Chinese Standard

T 3077 15MnVN

Available Forms

Bar,Plate

Uses

Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Vanadium (≈0.9%) refines grain and strengthens the tempered structure. 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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