Bainite structural steel used for high strength fastener
A bainite and structural steel technology, applied in the field of iron and steel metallurgy, can solve the problems of increasing production cost, reducing productivity, increasing energy consumption, etc., to achieve the effects of increasing productivity, reducing energy consumption and cost, and reducing pollution emissions
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Embodiment 1
[0023] A bainitic structural steel for high-strength fasteners, the chemical composition of the bainitic structural steel consists of the following components in weight percentage: C: 0.04%, Mn: 1.80%, Si: 0.60%, S: ≤0.010%, P: ≤0.010%, Nb: 0.08%, V: 0.15%, Ti: 0.06%, N: 0.005%, B: 0.007%, Als: ≤0.035%, the balance is Fe and unavoidable impurities .
Embodiment 2
[0025] A bainitic structural steel for high-strength fasteners, the chemical composition of the bainitic structural steel consists of the following components in weight percentage: C: 0.08%, Mn: 1.20%, Si: 0.80%, S: ≤0.010%, P: ≤0.010%, Nb: 0.06%, V: 0.25%, Ti: 0.04%, N: 0.010%, B: 0.005%, Als: ≤0.035%, the balance is Fe and unavoidable impurities .
Embodiment 3
[0027] A bainitic structural steel for high-strength fasteners, the chemical composition of the bainitic structural steel consists of the following components in weight percentage: C: 0.05%, Mn: 1.60%, Si: 0.65%, S: ≤0.010%, P: ≤0.010%, Nb: 0.075%, V: 0.18%, Ti: 0.055%, N: 0.007%, B: 0.0065%, Als: ≤0.035%, the balance is Fe and unavoidable impurities .
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