QCR4.5-2.5-0.6
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 QCR4.5-2.5-0.6 →QCr4.5-2.5-0.6 · 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 20, designation T55600
- PDF page references
- 10
- Unit
- Mass fraction (wt%)
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Cr | 3.5 ～ 5.5 |
| Fe | ≤ 0.05 (lower limit not stated) |
| Ni | 0.2 ～ 1.0 |
| Mn | 0.5 ～ 2.0 |
| P | ≤ 0.005 (lower limit not stated) |
| Zn | ≤ 0.05 (lower limit not stated) |
| Ti | 1.5 ～ 3.5 |
Applicability and limitations
Mass fraction wt%; GB/T 5231-2012, Table 4, row 20, designation T55600; Scanned PDF, page 10. Cu is the balance; A dash means unspecified; it is not entered as zero. Tabulated total impurities ≤0.1%, verified under the applicable table notes. This standard provides composition designations for wrought copper and copper alloys; actual supply and cold-heading suitability require separate confirmation. Cr range is written in the Al column, Ti range is written in the As column; Transcribed according to the actual element labels in the cells. Table 4, note e: 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