1.0402 — alloy Steel: Composition, Properties & Applications

Also known as: 1.0402
1.0402 supplied by Shanxi Youte Steel (jlhsteel.net).

CHEMICAL COMPOSITION
C:≤0.18;Mn:≤1.40;Si:≤0.40

TYPICAL APPLICATIONS
Carburizing (case-hardening) steel with low carbon core for toughness and a hard, wear-resistant surface after carburizing. Used for gears, camshafts, pinions, spline shafts, bushings and transmission parts subjected to fatigue and surface wear.

AVAILABLE FORMS
Bar, Plate, Tube, Forging, Wire

STANDARDS & EQUIVALENT GRADES
EN 10025; S235JR

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. Carburize 900–930 °C, direct/intake quench, temper 150–200 °C; useful case depth 0.5–1.5 mm.

PROCESSING 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). Machine the core stock before surface hardening; leave grinding allowance for the hardened case.

SOURCE & SUPPLY
Shanxi Youte Steel stocks 1.0402 in bars, plates, pipes and forgings with mill test certificates, cut-to-length service and export packaging. Contact our team for quotations and technical data sheets.