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C78270
| Elements | ||||||
|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Zn | Fe | Ni(3) | Mn | |
|
(1) Cu value includes Ag. (2) Cu + Sum of Named Elements 99.5% min. (3) Ni value includes Co. |
||||||
| Min (%) | 65.0 | 1.0 | 4.5 | |||
| Max (%) | 68.0 | 1.8 | Rem | 0.35 | 6.0 | 0.50 |
| Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.5% Ext (ksi) |
Elongation (%) |
Rockwell B scale | Rockwell F scale | Rockwell 30T scale | Shear Strength (ksi) |
Section Size (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C). | ||||||||||
| Flat Products | 1/2 Hard | H02 |
69 Typ |
58 Typ |
12 Typ |
78 Typ |
69 Typ |
47 Typ |
.04 | |
| 1/4 Hard | H01 |
62 Typ |
42 Typ |
24 Typ |
65 Typ |
63 Typ |
44 Typ |
.04 | ||
| 3/4 Hard | H03 |
78 Typ |
63 Typ |
5 Typ |
84 Typ |
72 Typ |
51 Typ |
.04 | ||
| Extra Hard | H06 |
91 Typ |
76 Typ |
3 Typ |
90 Typ |
75 Typ |
.04 | |||
| Hard | H04 |
85 Typ |
73 Typ |
4 Typ |
87 Typ |
74 Typ |
54 Typ |
.04 | ||
| Nominal Grain Size 0.015 mm | OS015 |
59 Typ |
27 Typ |
32 Typ |
85 Typ |
43 Typ |
.04 | |||
| Nominal Grain Size 0.035 mm | OS035 |
53 Typ |
23 Typ |
40 Typ |
78 Typ |
40 Typ |
.04 | |||
| Melting Point - Liquidus°F | 18300 |
|---|---|
| Melting Point - Solidus°F | 1780 |
| Densitylb/cu in. at 68°F | 0.31 |
| Specific Gravity | 8.69 |
| Electrical Conductivity% IACS at 68°F | 10 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 28 |
| Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) | 10.3 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 17000 |
| Modulus of Rigidityksi | 6400 |
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Not Recommended |
| Seam Weld | Not Recommended |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Poor |
| Machinability Rating | 60 |
Common Fabrication Processes
No fabrication process properties for this alloy
Thermal Properties
No thermal properties for this alloy
| Product Category | Product | Reason Category | Reason |
|---|---|---|---|
| Consumer | Watch Parts, Watch Plates | ||
| Hardware | Key Blanks |
Applicable Specifications
No applicable specifications for this alloy
Corrosion Properties
No Corrosion Properties Available.