| met. |
decarbonized steel; low-carbon steel (【技】含碳量 ≤0. 25% 的钢，具有强度低、塑性高、韧性高及良好的加工成型性和焊接性能，适于制造形状复杂和需要焊接的构件。普通低碳钢一般不进行热处理而直接使用。优质低碳钢或不进行热处理，或进行表面硬化处理，主要用于生产普通薄钢板、无缝钢管、焊接钢管、普通线材等；也广泛地作为渗碳钢，用于机械制造业。: ① Low-carbon steels are soft, tough steels that are easily machined and welded. 低碳钢既软又韧，易于机加工和焊接。 ②The case-carburizing process makes the surface of steel hard while its inside retains the toughness characteristic of low-carbon steel. 表面渗碳法能使钢的表面硬化，而内部仍保持低碳钢的韧性。); mild carbon steel; mild steel; mild-steel sheet; soft carbon steel; soft steel (0.12〜0.2C, V 0.2Si,0.3〜0.5Mn, <0.05P, <0.05S); mild-carbon steel; mild steel (①When mild steel or certain alloy steels are heated above 900°C, in contact with carbon, that element is absorbed at the surface of the steel. The depth of the carbon enrichment depends on the time and temperature of the treatment; this process is known as 'case-carburizing'. 当软钢或某些合金钢加热到 900°C 以上并与碳接触时，碳元素即被吸收到钢的表层。这一富碳层厚度取决于处理的时间和温度；这一工艺过程称之为"表面渗碳"。② A mild steel carburized at about 925 °C for eight hours has a depth of outside 'case' of about a millimeter, and a carbon content of 0.9 per cent at and near the surface. 软钢在 925°C 左右渗碳 8h, 其外表渗碳层厚度约为1 mm, 表面及其附近含碳量为 0.9%。); quiet steel; steel with low carbon content |
