China Cold Heading Quality Drawn Wire Rod SAE10b21 Phosphate Coated Class 8.8 Machine Screw Boron Steel Wire, Find details about China Boron Carbon Steel Wire, Cold Forging Steel Wire from Cold Heading Quality Drawn Wire Rod SAE10b21 Phosphate Coated Class 8.8 Machine Screw 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 |