| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: steel is used in production of pump and compressor equipment, tubes, reservoirs and high pressure tanks. Steel contains, mas.%: carbon 0.15-0.3; silicon 0.15-0.3; manganese 0.7-1.3; chromium 0.4-0.7; nickel 0.9-1.7; sulphur 0.01-0.02; phosphorus 0.03-0.05; yttrium 0.03-0.07; magnesium 0.003-0.007; boron 0.03-0.07; strontium 0.03-0.07; molybdenum1.7-2.3; zirconium 0.07-0.15; iron - the rest. ^ EFFECT: upgraded hardness of steel. ^ 1 tbl |
