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寶鋼冷成形用低合金高強度酸洗鋼帶是采用先進的冶煉技術和控軋控冷工藝生產的，低碳、低硫和低磷含量，具有優良冷成形性能和焊接性能的低碳微合金化鋼。
牌Grade C Si Mn P S Al Nb V Ti Mo
B600L, QSTE550TM, S550MC ≤0.10 ≤0.15 ≤1.70 ≤0.025 ≤0.010 ≥0.015 ≤0.09 ≤0.20 ≤0.15
B650L, QSTE600TM ,S600MC ≤0.10 ≤0.15 ≤1.80 ≤0.025 ≤0.010 ≥0.015 ≤0.09 ≤0.20 ≤0.15
B700L, QSTE650TM, S650MC ≤0.10 ≤0.15 ≤2.00 ≤0.025 ≤0.010 ≥0.015 ≤0.09 ≤0.20 ≤0.15
B750L, QSTE700TM, S700MC ≤0.10 ≤0.15 ≤2.10 ≤0.025 ≤0.010 ≥0.015 ≤0.09 ≤0.20 ≤0.15 ≤0.5
B600L, QSTE550TM, S550MC ≥550 600-760 ≥12 ≥14 1.5a
B650L, QSTE600TM, S600MC ≥600 650-820 ≥11 ≥13 1.5a
B700L, QSTE650TM, S650MC ≥650 700-880 ≥10 ≥12 2.0a
B750L, QSTE700TM, S700MC ≥700 750-950 ≥10 ≥12 2.0a
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