GB/T 8731
GB/T 8731 (Free-cutting structural steels)· GB (China) · 57 materials
| Designation | Material group | |
|---|---|---|
| L20087 | Structural and constructional steels | chevron_right |
| L20157 | Structural and constructional steels | chevron_right |
| L20407 | Structural and constructional steels | chevron_right |
| L20457 | Structural and constructional steels | chevron_right |
| L27457 | Structural and constructional steels | chevron_right |
| U71002 | Structural and constructional steels | chevron_right |
| U71082 | Structural and constructional steels | chevron_right |
| U71121 | Structural and constructional steels | chevron_right |
| U71152 | Structural and constructional steels | chevron_right |
| U71153 | Structural and constructional steels | chevron_right |
| U71201 | Structural and constructional steels | chevron_right |
| U71301 | Structural and constructional steels | chevron_right |
| U71351 | Structural and constructional steels | chevron_right |
| U71353 | Structural and constructional steels | chevron_right |
| U71452 | Structural and constructional steels | chevron_right |
| U71453 | Structural and constructional steels | chevron_right |
| U71454 | Structural and constructional steels | chevron_right |
| U71501 | Structural and constructional steels | chevron_right |
| U72081 | Structural and constructional steels | chevron_right |
| U72121 | Structural and constructional steels | chevron_right |
| U72151 | Structural and constructional steels | chevron_right |
| U73451 | Structural and constructional steels | chevron_right |
| U74082 | Structural and constructional steels | chevron_right |
| U74151 | Structural and constructional steels | chevron_right |
| U74451 | Structural and constructional steels | chevron_right |
| U75084 | Structural and constructional steels | chevron_right |
| Y08 | Structural and constructional steels | chevron_right |
| Y08MnBi | Structural and constructional steels | chevron_right |
| Y08MnS | Structural and constructional steels | chevron_right |
| Y08Pb | Structural and constructional steels | chevron_right |
| Y08S | Structural and constructional steels | chevron_right |
| Y08Sn | Structural and constructional steels | chevron_right |
| Y100S | Structural and constructional steels | chevron_right |
| Y12 | Structural and constructional steels | chevron_right |
| Y12Pb | Structural and constructional steels | chevron_right |
| Y15 | Structural and constructional steels | chevron_right |
| Y15Mn | Structural and constructional steels | chevron_right |
| Y15MnS | Structural and constructional steels | chevron_right |
| Y15Pb | Structural and constructional steels | chevron_right |
| Y15S | Structural and constructional steels | chevron_right |
| Y15Sn | Structural and constructional steels | chevron_right |
| Y20 | Structural and constructional steels | chevron_right |
| Y30 | Structural and constructional steels | chevron_right |
| Y35 | Structural and constructional steels | chevron_right |
| Y35Mn | Structural and constructional steels | chevron_right |
| Y40Mn | Structural and constructional steels | chevron_right |
| Y40MnS | Structural and constructional steels | chevron_right |
| Y45 | Structural and constructional steels | chevron_right |
| Y45Ca | Structural and constructional steels | chevron_right |
| Y45Mn | Structural and constructional steels | chevron_right |
| Y45MnPb | Structural and constructional steels | chevron_right |
| Y45MnS | Structural and constructional steels | chevron_right |
| Y45MnSn | Structural and constructional steels | chevron_right |
| Y45MnSPb | Structural and constructional steels | chevron_right |
| Y45S | Structural and constructional steels | chevron_right |
| Y45Sn | Structural and constructional steels | chevron_right |
| Y50 | Structural and constructional steels | chevron_right |