High intensity and high ductility -50 DEG C low-temperature steel and manufacturing method thereof
A high-toughness, high-strength technology, applied in the field of low-alloy steel manufacturing, can solve the problems of increasing the manufacturing cost of spherical tanks and labor intensity of workers, the low toughness index of 16MnDR steel plates, and the large wall thickness of low-temperature pressure vessel tanks, etc., to achieve production costs Inexpensive, high strength, good adaptability effect
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Embodiment 1
[0037] Example 1: C: 0.13, Si: 0.17, Mn: 1.31, P: 0.008, S: 0.007, Ni: 0.37, Ti: 0.009, Al: 0.028, Nb: 0.024, V: -, Cu: 0.16, Mo: 0.12, Zr: 0.018, RE: 0.0027.
Embodiment 2
[0038] Example 2: C: 0.16, Si: 0.24, Mn: 1.47, P: 0.012, S: 0.008, Ni: 0.59, Ti: 0.021, Al: 0.014, Nb: 0.019, V: 0.036, Cu: 0.27, Mo: —, Zr: 0.032, RE: 0.0039.
Embodiment 3
[0039] Example 3: C: 0.19, Si: 0.41, Mn: 1.65, P: 0.011, S: 0.006, Ni: 0.79, Ti: 0.043, Al: 0.053, Nb: 0.043, V: 0.027, Cu: -, Mo: 0.21, Zr: 0.031, RE: —.
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