C69710
DESCRIPTION
C69710 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 | 75.0 | 80.0 |
| Pb | 0.50 | 1.50 |
| Fe | - | 0.20 |
| Mn | - | 0.40 |
| Si | 2.50 | 3.50 |
| As | 0.03 | 0.03 |
| Total Others |
- |
0.50 |
| Zn |
Remainder |
Mechanical Properties According To ASTM B371 (As Per Temper HO2)
| Range (Inch) |
From |
To |
UTS Min (ksi) |
PS Min (ksi) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| 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) |
From |
To |
UTS Min (MPa) |
PS Min (MPa) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| 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 68-57210⁻⁶ 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
