China Saip Annealed Cold Drawn Chq 10b21 Class 8.8 Screws Bolts Phosphate Coated Boron Steel Wire, Find details about China Fastener Wire, Cold Heading Quality from Saip Annealed Cold Drawn Chq 10b21 Class 8.8 Screws Bolts Phosphate Coated Boron Steel Wire
Grade | Chemical Composition(%) | ||||||||||
C | Si | Mn | P | S | Al | Ti | B | Cr | Mo | V | |
10B21 | 0.18~0.23 | ≤0.10 | 0.70~1.00 | ≤0.030 | ≤0.035 | - | ≥0.0005 |