C19150 Leaded Nickel Copper

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MA19B is a free machining, precipitation hardened leaded-nickel copper alloy. Like MA19C / C19160, the alloy features high strength, high electrical conductivity, and excellent resistance to thermal stress relaxation, however the lead content is reduced to accommodate forming applications including cold heading. Typical applications are in critical high power components.

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 TL01 70 (485) 60 (415) 8 .00394 - .3150"
(1 - 8mm)
1/2 HT TL02 80 (550) 70 (485) 5
3/4 HT TL03 85 (585) 75 (515) 3
HT TL04 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 TL01 70 (485) 60 (415) 4 .0100 - .2362"
(0.25 - 6mm)
1/2 HT TL02 80 (550) 70 (485) 3
3/4 HT TL03 85 (585) 75 (515) 2
HT TL04 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 lbs/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