Using the state of the organization for the fine grain ferrite pearlite, strength than ordinary carbon structural steel Q235 about 20% ~ 30%, high atmospheric corrosion resistance of 20% ~ 38%.

使用状态的组织为细晶粒的铁素体—珠光体，强度比普通碳素结构钢Q235高约20%～30%，耐大气腐蚀性能高20%～38%。

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In this paper, the grain growth in the HAZ of three kinds of ultra - fine grain steels such as low carbon steel, commercial X65 steel and high purity X65 steel were evaluated.

研究了低碳钢、普通市售x65钢和高洁净度X65钢三种超细晶粒钢焊接haz的晶粒长大倾向。

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The key technique of hot rolling low carbon ultra-fine grained steel strip consists in controlled rolling and controlled cooling.

细晶粒低碳钢生产的关键技术在于控轧控冷。

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