| 摘要 |
Steel alloy is used as a material for tubes air-hardened in a protective gas in the manufacture of compressed gas containers or as a material in the manufacture of molded parts in light steel construction is new. The alloy contains (in weight %) 0.09-0.13 C, 0.10-0.50 Si, 1.10-1.80 Mn, maximum 0.02 P, maximum 0.02 S, 1.00-2.00 Cr, 0.20-0.60 Mo, 0.02-0.06 Al, 0.10-0.25 V, and a balance or Fe. Preferred Features: The steel alloy contains (in wt.%) 0.09-0.13 C, 0.10-0.30 Si, 1.45-1.60 Mn, maximum 0.015 P, maximum 0.011 S, 1.25-1.50 Cr, 0.40-0.60 Mo, 0.02-0.06 Al, 0.12-0.20 V, maximum 0.20 Cu, maximum 0.70 Ni and a balance or Fe. The steel alloy has a tensile strength Rm of more than 950 N/mm2, a proof stress Rp0.2 of more than 700 N/mm2 and an elongation A5 of more than 14 %.
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