| name | Car seat back bracket | |
| Product specification | 490*110*40 | |
| Production technology | Blanking (2D laser cutting)/Drawing (soft die)/inner hole and trimming (3D laser cutting)/flanging (soft die) | |
| Material information | HC420LA | T=1.0mm |
| Elongation after breakingδ/5 | ≥26% | |
| Tensile strengthσb | 460~550 MPa | |
| Yield strengthσs | 446 MPa | |

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