C34500 Leaded Brass (CuZn35Pb2)

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MA34B is a leaded brass with machinability rating of 90, moderate strength, and capacity for cold work. The alloy is very simlar to MA35B / C35300, but optimized to provide better bending performance. Example uses include parts requiring a combination of machining and forming operations, such as crimping, knurling, or thread rolling.

Mechanical Properties

Round Rod

TEMPER NAME  TEMPER CODE  TENSILE STRENGTH YIELD STRENGTH ELONGATION MILL LIMITS 
min, ksi (MPa) min, ksi (MPa)
@ 0.5% EUL
min, %
soft anneal 060 46 (315) 16 (110) 20 .00394 - .3150"
(1 - 8mm)
1/4 hard H01 52 - 65
(360 - 450)
25 (170) 10
1/4 hard and Stress Relieved HR01 52 - 65
(360 - 450)
25 (170) 10
1/2 hard HR02 57 - 80
(395 - 555)
25 (170) 7

Round Wire

TEMPER NAME  TEMPER CODE  TENSILE STRENGTH YIELD STRENGTH ELONGATION MILL LIMITS 
min, ksi (MPa) min, ksi (MPa)
@ 0.5% EUL
min, %
soft anneal 060 46 (315) 16 (110) 20 .0100 - 0.2362"
(0.25 - 6mm)
1/4 hard H01 52 - 65
(360 - 450)
25 (170) 7
1/4 hard and Stress Relieved HR01 52 - 65
(360 - 450)
25 (170) 7
1/2 hard HR02 57 - 80
(395 - 555)
25 (170) 7

Physical Properties

Melting Point (Liquidus) 1670°F 910°C
Melting Point (Solidus) 1630°F 890°C
Annealing Range (min - max), 1hr 800 - 1100 °F 425 - 595 °C
Density 0.306 lb/cu in 8.47 gm/cu cm
Electrical Resistivity (Annealed) 39.9 Ω·cir-mil/ft @ 68 °F 6.62 µΩ·cm @ 20 °C
Electrical Conductivity (Annealed) 26% IACS @ 68°F 0.151 MS/cm @ 20°C
Thermal Conductivity 67 Btu/sq ft/ft·hr/°F @ 68 °F 116 W/m·K @ 20 °C
Coefficient of Thermal Expansion 0.0000113°F (68-572°F) 0.0000204°C (20-300°C)
Modulus of Elasticity (Tension) 15,000 ksi 103,500 MPa
Modulus of Rigidity 5,600 ksi 38,600 MPa