Welding Q295NH railway steel hot rolled coil steel equivalent grades

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Q295NH railway steel hot rolled coil annealing is to heat the steel to 30 ~ 50℃ above the critical temperature, keep it in the heat treatment furnace for a period of time, and then cool it down to room temperature with the furnace. The purpose of Q295NH railway steel hot rolled coil annealing is to refine the grain of steel, eliminate internal stress and reduce hardness, improve cutting performance, increase toughness and plasticity, and facilitate welding and rolling processes. Q295NH railway steel hot rolled coil annealing can be complete annealing, incomplete annealing, stress relief annealing, isothermal annealing and spheroidizing annealing.

A283 Gr A steel composition(%)
Carbon, max 0.14
Manganese, max 0.90
Silicon: 0.40 0.15-0.40
Phosphorus, max 0.035
Sulphur, max 0.04
A283 Gr A steel plate mechanical property
Tensile Strength: 45,000 -60,000 psi [310 - 415 MPa]
Min. Yield Point: 24,000psi [165 MPa]
Elongation in 8"": 27% min
Elongation in 2"": 38% min

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