Copper Alloys Leaded Gunmetal :: Austral Wright Metals

Product Data Sheet – Copper Alloys

Leaded Gunmetal UNS-C83600 – Also known as Ounce Metal

Chemical Composition of Leaded Gunmetal

% Maximum unless shown as range or minimum

	Copper⁽¹⁾	Aluminium	Antimony	Iron	Lead	Nickel ⁽²⁾	Phosphorus ⁽³⁾	Silicon	Sulphur	Tin	Zinc
Min/Max	84.0-86.0	0.005	0.25	0.30	4.0-6.0	1.0	0.05	0.005	0.08	4.0-6.0	4.0-6.0
Nominal	85.0	–	–	–	5.0	–	–	–	–	5.0	5.0

(1) In determining Copper minimum, Copper may be calculated as Copper + Nickel

(2) Nickel value includes Cobalt

(3) For continuous castings, phosphorus shall be 1.5% maximum

Note: Copper + sum of named elements, 99.3% minimum

Applicable Specifications

Product	Specification
Product	AMS	ASME	ASTM	FEDERAL	MILITARY	SAE
Centrifugal	4855		B271			J461, J462
Continuous			B505			J461, J462
Fittings		B16.15, B16.18, B16.23, B16.32, SB62, B16.26	B62	WW-P-460
Flanges		B16.24, SB62	B62
Ingot			B30
Precision					MIL-C-11866
Sand	4855	SB62	B584, B62			J461, J462
Unions				WW-U-516
Valves					MIL-V-18436

Fabrication Properties

Joining Technique	Suitability
Soldering	Excellent
Brazing	Good
Oxyacetylene Welding	Not Recommended
Gas Shielded Arc Welding	Not Recommended
Coated Metal Arc Welding	Fair
Machinability Rating	84

Mechanical Properties

Measured at Room Temperature 68°F (20°C)

Temper	Cold Work	Typical/Min	Temperature	Tensile Strength	Yield Strength (0.5% ext under load)	Elongation	Brinell Hardness	Fatigue Strength at 10⁸ cycles	Izod Impact Strength
Temper	%		°C	MPa	MPa	%		MPa	J
M02	0	Minimum	20	207	97	20	–	–	0.0
M07	0	Minimum	20	248	131	15	–	–	0.0
M01	0	Minimum	20	205	97	20	–	–	0.0
M01	0	Typical	20	255	117	30	60	76	14.0

Physical Properties

Property	Imperial Units	Metric Units
Density	0.318 lb/in³ @ 68°F	8.83 g/cm³ @ 20°C
Specific Gravity	8.83	8.83

Melting Point (Liquidus)	1850°F	1010°C
Melting Point (Solidus)	1570°F	854°C

Electrical Resistivity	69.1 ohms-cmil/ft @ 68°F	11.49 micro-ohm-cm @ 20°C
Electrical Conductivity	15 %IACS @ 68°F	0.087 MegaSiemens/cm @ 20°C

Specific Heat	0.09 Btu/lb/°F @ 68°F	376.0 J/kg . °K @ 293°K
Mean Coefficient of Expansion	10.0 x 10^-6 per °F (68-392°F)	18.0 x 10^-6 / °C @ 20°C (20-200°C)
Thermal Conductivity	41.6 BTU . ft/(hr.ft².°F) @ 68°F	72 W / m . °K @ 20°C

Modulus of Elasticity (Tension)	13,500 ksi	93,100 MPa
Magnetic Permeability	1.0	1.0

Typical Uses for Leaded Gunmetal

Architecture: Ornamental Fixtures

Building: Heating Equipment, Lightning Protection, Trowels for Cement Working, Cooling Equipment

Electrical: Switches, Electrical Equipment, Electrical Hardware

Fasteners: Large Hold Down Screws

Industrial: Pressure Blocks for Steel Industry, Pump Parts, Transducer Housings, Valve Bodies for the Water Meter Industry, Valves for the Water Meter Industry, Pump Fixtures, Impellers, Valve Bodies, Pumps, Bushings, Furnaces, Pumps, Low-Pressure Valves, Small Gears, Bearings, Air Actuators, Handles for Dental Equipment, Couplings, Valves, Printing Presses, Valve Bodies, Valves, Rings, Bearing Segments for Steel Industry

Marine: Marine Products, Parts for Boats

Plumbing: Faucets, Pipe Fittings, Fixtures

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high-performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

Copper Alloys Leaded Gunmetal C83600 | Austral Wright Metals