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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 (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 (Inch)
|
From |
To |
UTS Min (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 68-57210⁻⁶ 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 |