08Ni3DR — alloy Steel: Composition, Properties & Applications

Also known as: 08Ni3DR
Low-temp pressure vessel steel (-70°C). (GB/T 3531; equiv GB/T 713 09MnNiDR / A203 GrE mod). Nominal values—confirm mill certificate.

CHEMICAL COMPOSITION
C:≤0.12;Mn:1.20-1.60;Ni:0.30-0.80;P:≤0.020;S:≤0.010

MECHANICAL PROPERTIES
Tensile:440-590 MPa;Yield:≥280 MPa

TYPICAL APPLICATIONS
低温压力容器（-70℃）。,Plate

AVAILABLE FORMS
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.

STANDARDS & EQUIVALENT GRADES
T 3531 08Ni3DR; T 713 09MnNiDR / A203 GrE mod

HEAT TREATMENT
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 08Ni3DR 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.