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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	Metric	English	Comments
Density	8.41 g/cc	0.304 lb/in³	UNS C36500
Mechanical Properties
Hardness, Rockwell F	80	80	M20 temper
Tensile Strength, Ultimate	370 MPa	53700 psi	M20 temper
Tensile Strength, Yield	140 MPa	20300 psi	M20 temper
Elongation at Break	45 %	45 %	in 50 mm, M20 temper
Modulus of Elasticity	105 GPa	15200 ksi
Poisson's Ratio	0.35	0.35	Calculated
Machinability	60 %	60 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	39 GPa	5660 ksi
Electrical Properties
Electrical Resistivity	6.2e-006 ohm-cm	6.2e-006 ohm-cm	at 20°C (68°F)
Thermal Properties
CTE, linear 250°C	20.8 µm/m-°C	11.6 µin/in-°F	from 20-300°C (68-570°F)
Specific Heat Capacity	0.38 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	123 W/m-K	854 BTU-in/hr-ft²-°F	at 20°C (68°F)
Melting Point	885 - 900 °C	1630 - 1650 °F
Solidus	885 °C	1630 °F
Liquidus	900 °C	1650 °F
Processing Properties
Annealing Temperature	425 - 600 °C	797 - 1110 °F
Hot-Working Temperature	625 - 800 °C	1160 - 1470 °F

References are available for this material.