Q355B鋼材價(jià)格通常高于Q345B。

鋼材Q345B和Q355B的價(jià)格區(qū)別主要體現(xiàn)在化學(xué)成分和力學(xué)性能上。Q345B的含碳量在0.18%左右，屈服強(qiáng)度為345MPa；而Q355B的含碳量在0.21%左右，屈服強(qiáng)度為355MPa。因此，Q355B的強(qiáng)度更高，價(jià)格也會相應(yīng)更高。

種類：Q345B屬于低合金高強(qiáng)度結(jié)構(gòu)鋼系列，而Q355B則是以強(qiáng)度等級為主要特征的鋼材。
價(jià)格幅度：供應(yīng)鏈情況、加工需求與市場供需關(guān)系等因素會令兩種鋼材價(jià)格有所波動，一般Q345B的定價(jià)可能會低于Q355B。但具體區(qū)別應(yīng)依據(jù)實(shí)時(shí)市場調(diào)研來判定。

Steel prices for Q345B and Q355B vary due to differences in their properties and demand in the market. Generally, Q355B might be priced higher as it offers better mechanical strength compared to Q345B, reflecting its enhanced quality and potential applications. However, the precise price difference depends on factors like supply, demand, and specific market conditions.

滄州這邊Q345B和Q355B價(jià)錢有差，Q355B貴些，因?yàn)檫@鋼材強(qiáng)度高一檔，Q345B用處廣些，價(jià)格稍低。