Home >
Material Highlights: Material Highlight: ASTM-B740 Alloy C72650
Material Highlights: Material Highlight: ASTM-B740 Alloy C72650
This material is a copper base alloy with both high strength and high conductivity attributes. It provides excellent performance for shielding strips, contacts and connectors.
Chemical Composition (Weight Percent)
- Nickel - 7.5%
- Tin - 5%
- Copper - 87.5%
Physical Properties
- Electrical Conductivity @ 68°F (20°C) - 14-15% IACS
- Modulus of Elasticity - 18 x 10 psi (12 x 103 Mpa)
- Density - 0.32 lb./in3 (8.87 gm./cc)
Benefits
- Combines high strength and formability
- High conductivity
- Available in mill hardened or age hardenable
- No distortion during aging, no fixturing
- Excellent solderability and resistance to stress relaxation during high temperature (over 400°F, 200°C) soldering
- Fine grain size
- Excellent corrosion resistance bare and easy to plate when required
- Low initial cost and additional savings during processing
TEMPER DESIGNATION |
0.05% YS ksi (MPa) |
UTS Ksi (MPa) |
Elongation (%) |
Hardness (VHN) |
TD01 |
45-60 (310-413) |
60-75 (413-517) |
18 |
150-200 |
TD02 |
55-75 (379-516) |
75-85 (517-586) |
5 |
175-225 |
TS01 |
90-115 (620-792) |
130-140 (896-965) |
8 |
290-340 |
TS02 |
100-125 (689-861) |
135-145 (930-999) |
6 |
300-360 |
TM04 |
95-115 (655-792) |
115-135 (792-930) |
10 |
300-350 |
TM06 |
100-120 (689-827) |
120-140 (827-965) |
10 |
300-360 |