China Cold Drawn Chq Wire 10b21 Phosphate Coated Lubed Class 8.8 Bolts Boron Steel Wire, Find details about China Cold Forging Wire, Cold Heading Quality from Cold Drawn Chq Wire 10b21 Phosphate Coated Lubed Class 8.8 Bolts 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 |