SPV450钢板与SPV355钢板材质上的异同 牌号 C Si Mn P S 厚度≤100mm，≤0.18； SPV235 厚度>100mm，≤0.20 ≤0.35 ≤1.40 ≤0.030 ≤0.030 SPV315 ≤0.18 ≤0.55 ≤1.60 ≤0.030 ≤0.030 SPV355 ≤0.20 ≤0.55 ≤1.60 ≤0.030 ≤0.030 SPV410 ≤0.18 ≤0.75 ≤1.60 ≤0.030 ≤0.030 SPV450 ≤0.18 ≤0.75 ≤1.60 ≤0.030 ≤0.030 SPV490 ≤0.18 ≤0.75 ≤1.60 ≤0.030 ≤0.030
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