C69710
C69710 Spec SheetC69710 brass is a brass formulated for primary forming into wrought products. It is typically furnished in the H04 (full hard) temper. It has a moderately low melting temperature and a fairly high tensile strength relative to other wrought brasses.
Chemical Composition
| Elements | Min (%) | Max (%) |
|---|---|---|
| Cu | 75.00 | 80.00 |
| Pb | 0.50 | 1.50 |
| Fe | – | 0.20 |
| Mn | – | 0.40 |
| Si | 2.50 | 3.50 |
| As | 0.03 | 0.06 |
| Total Others | – | 0.50 |
| Zn | Remainder | |
Mechanical properties according to ASTM B371 (as per temper HO2)
| Range (inch) | UTS Min (ksi) |
UTS Max (ksi) |
PS Min (ksi) |
Elongation Min (%) |
Hardness | ||
|---|---|---|---|---|---|---|---|
| Hardness Min (HRB) |
Hardness Max (HRB) |
||||||
| Round (Dia) | 0.059 – 1.000 | 65 | – | 32 | 20 | – | – |
| 1.000 – 2.953 | 55 | – | 28 | 25 | – | – | |
| Hex (A/F) | 0.118 – 1.000 | 65 | – | 32 | 20 | – | – |
| 1.000 – 2.755 | 55 | – | 28 | 25 | – | – | |
| Square (A/F) | 0.118 – 1.000 | 65 | – | 32 | 20 | – | – |
| 1.000 – 2.362 | 55 | – | 28 | 25 | – | – | |
| Range (mm) | UTS Min (MPa) |
UTS Max (MPa) |
PS Min (MPa) |
Elongation Min (%) |
Hardness Min (HRB) |
Hardness Max (HRB) |
||
|---|---|---|---|---|---|---|---|---|
| Round (Dia) | 1.5 | 25 | 450 | – | 220 | 20 | – | – |
| 25 | 75 | 380 | – | 195 | 25 | – | – | |
| Hex (A/F) | 3 | 25 | 450 | – | 220 | 20 | – | – |
| 25 | 70 | 380 | – | 195 | 25 | – | – | |
| Square (A/F) | 3 | 25 | 450 | – | 220 | 20 | – | – |
| 25 | 60 | 380 | – | 195 | 25 | – | – | |
| PHYSICAL PROPERTIES | |
|---|---|
| Melting Point – Liquidus °F | 1706 |
| Density lb/cu in. at 68°F | 0.3 |
| Specific Gravity | 8.3 |
| Electrical Conductivity % IACS at 68°F | 8 |
| Thermal Conductivity Btu/sq ft/ft hr/°F at 68°F | 23 |
| Coefficient of Thermal Expansion 68–572 × 10⁻⁶ per °F (68–572°F) | 10.7 |
| Modulus of Elasticity in Tension ksi | 16000 |
| FABRICATION PROPERTIES | |
|---|---|
| Technique | Suitability |
| Capacity for Being Hot Formed | Excellent |
| Machinability Rating | 70 |
Typical Uses
