| 摘要 |
FIELD: metallurgy, particularly, steel intended for manufacturing welded high-strength round-link chains having diameter up to 45 mm which are used in mining devices. SUBSTANCE: steel comprises, mas.%: carbon, 0.22-0.28; manganese, 0.8-1.1; chromium, 0.5-0.7; nickel, 0.9-1.2; molybdenum, 0.4-0.8; silicium, 0.15-0.30; aluminium, 0.02-0.055, cerium, 0.002-0.01; ferrum, the balance. EFFECT: increased useful life and safety of desired chains. 2 tblw
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