Commodity Square Steel Billet Grade Q235/Q275, 3SP/5SP, 20MnSi &etc Size 100*100mm,120*120mm,130*130mm,150*150mm Length 6m-12m Packing Bulk shipment Chemical composition: Standard C(%) Mn(%) S(%) P(%) Si(%) Cr(%) Q195 â?¤0.12 â?¤0.50 â?¤0.040 â?¤0.035 â?¤0.30 0.3-0.4 Q235 â?¤0.20 â?¤1.40 â?¤0.045 â?¤0.045 â?¤0.35 0.3-0.4 Q275 â?¤0.22 â?¤1.50 â?¤0.045 â?¤0.045 â?¤0.35 0.3-0.4 20MnSi 0.17-0.25 1.2-1.6 â?¤ 0.050 â?¤ 0.050 0.40-0.80 0.3-0.4 3SP 0.14-0.22 0.40-0.85 â?¤ 0.050 â?¤ 0.040 0.05-0.15 0.3-0.4 5SP 0.28-0.37 0.50-1.00 â?¤ 0.050 â?¤ 0.040 0.15-0.30 0.3-0.4