B23
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 B23 →B23 · 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 5, row 4, designation C71100
- PDF page references
- 11、12
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Fe | ≤ 0.1 (lower limit not stated) |
| Mn | ≤ 0.15 (lower limit not stated) |
| Pb | ≤ 0.05 (lower limit not stated) |
| Zn | ≤ 0.2 (lower limit not stated) |
Applicability and limitations
Mass fraction wt%; GB/T5231—2012, Table 5, row 4, designation C71100. Cu is the balance; Ni+Co is a coupled combined range and must not be applied independently to each element. Total impurities under Clause 2.3 are ≤1.0% and include all relevant impurities; a partial sum of listed elements cannot replace complete analysis. Table 5, note a: As/Bi/Sb need not be analyzed, but the supplier must still guarantee that the limit is not exceeded; Unlisted numerical values are not guessed or filled in. This standard covers wrought copper-nickel composition and does not establish actual supply of cold-heading wire.
Combined limits
- Combined-element limits
- Element coefficient
- Ni
- 1
- Co
- 1
- Lower limit
- 22
- Upper limit
- 24
- Requirement
- Total Ni + Co
- Elements requiring measured values from the same heat
- Co
- Ni