HSN72-1
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 HSN72-1 →HSn72-1 · 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 36, designation C44300
- PDF page references
- 8、9
Carbon-equivalent reference
Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.
Products other than tube, base composition in Table 3
Tubular products: Table 3, note d raises the Sn minimum to 0.9%
Composition record (conditional branches apply; this is not an unconditional requirement)
| Element | Composition requirement |
|---|---|
| Cu | 70.0 ～ 73.0 |
| As | 0.02 ～ 0.06 |
| Sn | 0.8 ～ 1.2 |
| Fe | ≤ 0.06 (lower limit not stated) |
| Pb | ≤ 0.07 (lower limit not stated) |
Applicability and limitations
Mass fraction wt%; GB/T5231—2012, Table 3, row 36, designation C44300. Zn is the balance; Unlisted elements are not entered as zero; Sum of impurities listed in table ≤0.4%, calculated according to Clause 2.3 and footnotes. Table 3 Note d: When this grade is a tube product, the minimum mass fraction of Sn is 0.9%; For other products, the tabulated lower limit of 0.8% applies..
Combined limits
- Combined-element limits
- Elements requiring measured values from the same heat
Original condition-branch records
Products other than tube, base composition in Table 3
| Element | Composition requirement |
|---|---|
| Cu | 70.0 ～ 73.0 |
| As | 0.02 ～ 0.06 |
| Sn | 0.8 ～ 1.2 |
| Fe | ≤ 0.06 (lower limit not stated) |
| Pb | ≤ 0.07 (lower limit not stated) |
Tubular products: Table 3, note d raises the Sn minimum to 0.9%
| Element | Composition requirement |
|---|---|
| Cu | 70.0 ～ 73.0 |
| As | 0.02 ～ 0.06 |
| Sn | 0.9 ～ 1.2 |
| Fe | ≤ 0.06 (lower limit not stated) |
| Pb | ≤ 0.07 (lower limit not stated) |