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q345r是什么材质
更新时间： 2020-12-01 14:00:55  

钢板。q345r是钢板，是锅炉容器板，q是汉语屈拼音首位字母，345表示屈服强度，R是汉语容拼音首位字母，它的牌号表示方法是低合金高强度结构钢的牌号，用屈服强度值屈字和压力容器容字汉语拼音首位字母表示。而q345r在石油、化工、电站等行业应用还是很广泛的，它的主要化学成分有：C≤0.20、Si≤0.55、Mn1.20—1.70、P≤0.025、S≤0.010、Cu≤0.30、Ni≤0.30、Cr≤0.30、Mo≤0.08、Nb≤0.050、V≤0.050、Ti≤0.030、Alt：≥0.020。

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