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q345r是什麼材質
q345r是什麼材質
更新时间:2025-06-21 01:10:11

  鋼闆。q345r是鋼闆,是鍋爐容器闆,q是漢語屈拼音首位字母,345表示屈服強度,R是漢語容拼音首位字母,它的牌号表示方法是低合金高強度結構鋼的牌号,用屈服強度值屈字和壓力容器容字漢語拼音首位字母表示。而q345r在石油、化工、電站等行業應用還是很廣泛的,它的主要化學成分有: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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