C19160 Leaded Nickel Copper (CuNiPb1P)
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MA19C is a free machining, precipitation hardened leaded-nickel copper alloy featuring both high strength and electrical conductivity. Exhibiting excellent resistance to fatigue and thermal stress relaxation, MA19B / C19150 is very well suited for critical and high-reliability machined female electrical connector components such as spring contacts and coaxial pins.
Mechanical Properties
Round Rod
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH | YIELD STRENGTH | ELONGATION | MILL LIMITS |
| min, ksi (MPa) | min, ksi (MPa) | min, % | |||
| 1/4 HT | TH01 | 70 (485) | 60 (415) | 8 | .0394 - .3150" (1 - 8mm) |
| 1/2 HT | TH02 | 80 (550) | 70 (485) | 5 | |
| 3/4 HT | TH03 | 85 (585) | 75 (515) | 3 | |
| HT | TH04 | 90 (620) | 80 (550) | 2 |
Round Wire
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH | YIELD STRENGTH | ELONGATION | MILL LIMITS |
| min, ksi (MPa) | min, ksi (MPa) | min, % | |||
| 1/4 HT | TH01 | 70 (485) | 60 (415) | 4 | .0100 - .2362" (0.25 - 6mm) |
| 1/2 HT | TH02 | 80 (550) | 70 (485) | 3 | |
| 3/4 HT | TH03 | 85 (585) | 75 (515) | 2 | |
| HT | TH04 | 95 (655) | 85 (585) | 1 |
Physical Properties
| Melting Point (Liquidus) | 1980°F | 1082°C |
| Melting Point (Solidus) | 1900°F | 1038°C |
| Annealing Range (min - max), 1hr | 1290 - 1380°F | 700 - 750°C |
| Density | 0.320 lb/cu in | 8.86 gm/cu cm |
| Electrical Resistivity (Annealed) | 18.9 Ω·cir-mil/ft @ 68 °F | 3.13 µΩ·cm @ 20 °C |
| Electrical Conductivity (Annealed) | 55% IACS @ 68°F | 0.320 MS-cm @ 20°C |
| Thermal Conductivity | 146 Btu/sq ft/ft·hr/°F @ 68 °F | 253 W/m·K @ 20 °C |
| Coefficient of Thermal Expansion | 0.0000098°F (68-572°F) | 0.0000176°C (20-300°C) |
| Modulus of Elasticity (Tension) | 18,000 ksi | 124,000 MPa |
| Modulus of Rigidity | 6,000 ksi | 41,000 MPa |
For a full size version of product specifications, including chemical composition in both US and Metric units, please download the PDF.