C86200

Description

Manganese bronze – copper casting alloy UNS C86200 consists primarily of of copper, zinc, aluminium and manganese bronze. Manganese existing in UNS C86200 provides an attractive chocolate brown color which is commonly used in architecture. The presence of lead in the alloy improves the longevity of the alloy.

Builders Hardware	Fasteners	Industrial	Marine	Ordnance
Brackets	Screw Down Nuts	Bushings	Boat Parts	Gun Mounts
Structural Parts		Cams	Clamps
		Frames	Marine Castings
		Gears	Rudders
		High Strength Machine Parts
		Hooks
		Marine Racing Propellers
		Pressing Dies for Wood Pulp
		Shafts
		Struts
		Valve Stems
		Wear Rings for Pressing Dies for Wood Pulp Industry
		Worm Gears

COMMON FABRICATION PROCESSES

No fabrication process properties for this alloy

CHEMICAL COMPOSITION

Elements
Cu^(1,2)	Pb	Sn	Zn	Fe	Ni⁽³⁾	Al	Mn
(1) Cu + Sum of Named Elements 99.0% min. (2) In determining Cu min., Cu may be calculated as Cu + Ni. (3) Ni value includes Co.
Min (%)	60.0			22.0	2.0		3.0	2.5
Max (%)	66.0	0.20	0.20	28.0	4.0	1.0	4.9	5.0

MECHANICAL PROPERTIES

Form	Temper	Temper Code	Tensile Strength (ksi)	YS-0.5% Ext (ksi)	Elongation (%)	Brinell Hardness, 3000 kg load	Izod (ft-lbs)	Compressive Strength .001 in. set/in. (ksi)
* Measured at room temperature, 68°F (20°C).
As Centrifugal Cast	As Centrifugal Cast	M02	90 Min for Standard
As Continuous Cast	As Continuous Cast	M07	90 Min for Standard	45 Min for Standard	18 Min for Standard
As Sand Cast	As Sand Cast	M01	90 Min for Standard 95 Typ	45 Min for Standard 48 Typ	18 Min for Standard 20 Typ	180 Typ	12 Typ	50 Typ

PHYSICAL PROPERTIES

Melting Point – Liquidus°F	1725
Melting Point – Solidus°F	1650
Densitylb/cu in. at 68°F	0.288
Specific Gravity	7.97
Electrical Conductivity% IACS at 68°F	8
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F	20.5
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F)	12
Specific Heat CapacityBtu/ lb /°F at 68°F	0.09
Modulus of Elasticity in Tensionksi	15000
Magnetic Permeability	1.24 ⁽¹⁾

FABRICATION PROPERTIES

Technique	Suitability
Soldering	Poor
Brazing	Poor
Oxyacetylene Welding	Good
Gas Shielded Arc Welding	Fair
Coated Metal Arc Welding	Good
Machinability Rating	30

APPLICABLE SPECIFICATIONS

Form	Specific Sub-Form	System	Standard	Description
As Centrifugal Cast	Castings	ASTM	B271/B271M	COPPER BASE ALLOY CENTRIFUGAL CASTINGS
	Castings	SAE	J462	CAST COPPER ALLOYS
	Castings	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
As Continuous Cast	Castings	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
	Castings	ASTM	B505/B505M	COPPER BASE ALLOY CONTINUOUS CASTINGS
	Castings	SAE	J462	CAST COPPER ALLOYS
As Sand Cast	Castings	ASTM	B584	COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS
	Castings	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
	Castings	SAE	J462	CAST COPPER ALLOYS
	Castings	ASTM	B763/B763M	COPPER ALLOY SAND CASTINGS FOR VALVE APPLICATIONS
Ingot		ASTM	B30	COPPER BASE ALLOYS IN INGOT FORM

		FEDERAL	QQ-C-523	COPPER ALLOY INGOTS: BRASS (YELLOW HIGH STRENGTH) MANGANESE AND MANGANESE-ALUMINUM BRONZE
Precision Cast	Castings	MILITARY	MIL-C-11866	CASTINGS, PRECISION, NONFERROUS
Valves