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Low-alloy structural steel performance requirements

Sep 07, 2015

(1) High strength: in general its yield strength above 300MPa.

(2) high toughness: Requirements elongation rate of 15% to 20%, impact toughness at room temperature is greater than 600kJ / m ~ 800kJ / m. For large welded components, also requires a high fracture toughness.

(3) good weldability and cold forming properties.

(4) Low cold-brittle transition temperature.

(5) good corrosion resistance.