HSI75-3
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 HSI75-3 →HSi75-3 · 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 3, row 65, designation T68320
- PDF page references
- 9
- Unit
- Mass fraction (wt%)
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Cu | 73.0 ～ 77.0 |
| Fe | ≤ 0.1 (lower limit not stated) |
| Pb | ≤ 0.1 (lower limit not stated) |
| Mn | ≤ 0.1 (lower limit not stated) |
| P | 0.04 ～ 0.15 |
| Ni | ≤ 0.1 (lower limit not stated) |
| Si | 2.7 ～ 3.4 |
| Cd | ≤ 0.01 (lower limit not stated) |
| Sn | ≤ 0.2 (lower limit not stated) |
Applicability and limitations
Mass fraction wt%; GB/T 5231-2012, Table 3, row 65, designation T68320; Scanned PDF, page 9. Zn is the balance; A dash means unspecified; it is not entered as zero. Clause 2.2: single tabulated impurity values are maxima. Tabulated total impurities ≤0.6%; verify using measured contents of the impurity elements specified in the standard. This standard provides composition designations for wrought copper and copper alloys; actual supply and cold-heading suitability require separate confirmation. Table 3, note c: total impurities are the sum of measured contents of the impurity elements listed in the table.
Combined limits
- Combined-element limits
- Elements requiring measured values from the same heat