QSN0.4
1 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.
Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.
Open condition selection, comparison and carbon-equivalent tools for QSN0.4 →QSn0.4 · GB/T 5231-2012
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Copper and copper alloys
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- GB/T 5231-2012
- Table / clause
- Table 4, row 1, designation T50110
- PDF page references
- 10
- Unit
- Mass fraction (wt%)
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Sn | 0.15 ～ 0.55 |
| P | ≤ 0.001 (lower limit not stated) |
| O | ≤ 0.035 (lower limit not stated) |
Applicability and limitations
Mass fraction wt%; GB/T 5231-2012, Table 4, row 1, designation T50110; scanned PDF, PDF physical page 10. Cu is balance; dashes mean unspecified and are not replaced with zero. The total of table-listed impurities is ≤0.1%, subject to the applicable table notes. This standard provides the grade-composition basis for wrought copper and copper alloys; actual supply and cold-heading suitability require separate confirmation.
Combined limits
- Combined-element limits
- Elements requiring measured values from the same heat