GB/T 20887.2
GB/T 20887.2 (Continuously hot rolled high strength steel sheet and strip for automobile. Part 2: High hole expansion steel)· GB (China) · 6 materials
| Designation | Material group | |
|---|---|---|
| HR300/450HE | Structural and constructional steels | chevron_right |
| HR380/540HE | Structural and constructional steels | chevron_right |
| HR440/580HE | Structural and constructional steels | chevron_right |
| HR520/680HE | Structural and constructional steels | chevron_right |
| HR600/780HE | Structural and constructional steels | chevron_right |
| HR780/980HE | Structural and constructional steels | chevron_right |