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Uninhibited Leaded Muntz Metal, UNS C36500

Subcategory: Copper Alloy; Metal; Nonferrous Metal

Key Words: 60/40 brass, CDA 365, CZ137, ISO, CuZn39Pb0.5, CEN CW610N, UNS C36800, UNS C36600, UNS C36700, UNS C36800, uninhibited, arsenical, antimonial, phosphorized leaded muntz metal, low leaded brass

Component    Wt. % Cu 58 - 61   Fe Max 0.15   Other Max 0.1   Pb 0.4 - 0.9   Sn Max 0.25   Zn 39.4

Material Notes:
Fair to excellent corrosion resistance. Excellent machinability. Combines good machinability with excellent hot formability.

Applications: main tube sheets for condensers and heat exchangers, support sheets, baffles.

Physical Properties	Original Value		Comments
Density	8.41 g/cc		UNS C36500
Mechanical Properties
Hardness, Rockwell F	80		M20 temper
Tensile Strength, Ultimate	370 MPa		M20 temper
Tensile Strength, Yield	140 MPa		M20 temper
Elongation at Break	45 %		in 50 mm, M20 temper
Modulus of Elasticity	105 GPa
Poisson's Ratio	0.35		Calculated
Machinability	60 %		UNS C36000 (free-cutting brass) = 100%
Shear Modulus	39 GPa
Electrical Properties
Electrical Resistivity	6.2e-006 ohm-cm		at 20°C (68°F)
Thermal Properties
CTE, linear 250°C	20.8 µm/m-°C		from 20-300°C (68-570°F)
Specific Heat Capacity	0.38 J/g-°C
Thermal Conductivity	123 W/m-K		at 20°C (68°F)
Melting Point	885 - 900 °C
Solidus	885 °C
Liquidus	900 °C
Processing Properties
Annealing Temperature	425 - 600 °C
Hot-Working Temperature	625 - 800 °C

References are available for this material.