For carbon steel and low alloy steel iron welding.

用于铸铁碳钢不锈钢和低合金钢的焊接。

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Both steel iron and cast iron have the structures of eutectoid, hypoeutectoid and hypereutectoid.

钢和铸铁都有共析、亚共析和过共析这三种组织。

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Steel is made from iron.

钢是由铁炼成的。

《牛津词典》

The ancestors of many of today's Pittsburghers came from all over Europe to work in the iron and steel factories.

VOA: special.2009.07.13

Iron or steel, 800 million tons, almost a billion tons of steel.

铁或钢，每年8亿吨，几乎接近10亿的钢产量。

麻省理工公开课 - 固态化学导论课程节选

So you pick a better material like iron and steel, that makes a better bridge, we know that now because we have experience with bridges, but still your bridge might fail.

你选择了钢铁作为材料,来造了一座更好的桥,我们现在能够明晰这一点,是因为在造桥这件事上我们现在很有经验,但即使是我们现在造的桥也仍然会倒塌

耶鲁公开课 - 生物医学工程探索课程节选

He added that a successful bid would also deal a blow to China, whose fifth largest steel maker Wuhan Iron and Steel Corporation was seeking to acquire a 40% stake in Riversdale's Zambeze asset.

BBC: Rio Tinto raises bid for Australia's Riversdale

Commodity postings for coal, steel and iron ore threaten new cyclical lows.

FORBES: Apple And Google Much Better Bets Than Black Or Yellow Gold

Sales of molybdenum, which is used to make steel and iron alloys, should increase to 90 million this year, from 83 million in 2012.

FORBES: U.S. And China Strengthening, Gold To Average $1,700 In 2013: Freeport McMoran