Chemical composition and mechanical properties of Q460DR, a Chinese grade of cryogenic pressure vessel steel.
Q460DR Approximate Grade Lookup Table

Chemical Composition

Grade Chemical Composition(Quality Fraction)/%
C Si   Mn Ni Mo V Nb Alt   N P S
Q460DR ≤0.20 0.15~0.50 1.30~1.70 0.40~0.80 ≤0.08 0.10~0.20 0.015~0.050 一 ≤0.025 ≤0.018 ≤0.008

Mechanical properties and processing properties

Grade Delivery status Thickness mm Tensile test Impact test 180°Bending test b=2a
Tensile strength Rm/MPa Lower yield strength
ReL/MPa		 Elongation after fracture A/% Temperature℃ Impact absorption energy KV₂/J
≥ ≥
Q460DR Normalizing or
Normalizing + Tempering		 6～20 630～730 460 18 -40 60 D=3a