C86400

Description

Leaded high strength yellow brass – copper casting alloy UNS C86400 is a cast brass alloy of manganese bronze and leaded manganese bronze. The chocolate color of UNS C86400 can be attributed to the manganese present in the alloy. The leaded brass is commonly called as architectural bronze. The lead in the alloy enhances the longevity of the alloy and gives it an attractive golden lustre.

Builders Hardware	Consumer	Electrical	Fasteners	Industrial	Marine	Plumbing
Door hardware for Prison	Musical Instruments	Electrical Components	Screw Down Nuts	Bearing Cage Blanks	Boat Parts	Fixtures
Window Hardware	Piano Keys	Electrical Equipment		Bearings	Covers for Marine Hardware
		Switches		Brackets	Marine Fittings
				Bushings	Marine Hardware
				Cams
				Fittings
				Lever Arms
				Light Duty Gears
				Machinery Parts
				Propellers
				Pump Fixtures
				Roller Bearings
				Valve Stems

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 (%)	56.0	0.50	0.50	34.0	0.40		0.50	0.10
Max (%)	62.0	1.5	1.5	42.0	2.0	1.0	1.5	1.5

MECHANICAL PROPERTIES

Form	Temper	Temper Code	Tensile Strength (ksi)	YS-0.5% Ext (ksi)	Elongation (%)	Brinell Hardness, 500 kg load	Brinell Hardness, 3000 kg load	Izod (ft-lbs)	Charpy V-Notch Impact Strength (ft-lbs)	Compressive Strength .001 in. set/in. (ksi)	Compressive Strength .1 in. set/in. (ksi)	Fatigue Strength** (ksi)
* Measured at room temperature, 68°F (20°C).** Fatigue Strength: 100 x 10⁶ cycles, unless indicated as [N] x 10⁶.
As Centrifugal Cast	As Centrifugal Cast	M02	60 Min for Standard	20 Min for Standard	15 Min for Standard
As Sand Cast	As Sand Cast	M01	60 Min for Standard 65 Typ	20 Min for Standard 25 Typ	15 Min for Standard 20 Typ	90 Typ	105 Typ	30 Typ	25 Typ	22 Typ	87 Typ	25 Typ

PHYSICAL PROPERTIES

Melting Point – Liquidus°F	1616
Melting Point – Solidus°F	1583
Densitylb/cu in. at 68°F	0.301
Specific Gravity	8.33
Electrical Conductivity% IACS at 68°F	19
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F	51
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F)	11
Specific Heat CapacityBtu/ lb /°F at 68°F	0.09
Modulus of Elasticity in Tensionksi	14000

FABRICATION PROPERTIES

Soldering	Fair
Brazing	Fair
Oxyacetylene Welding	Poor
Gas Shielded Arc Welding	Poor
Coated Metal Arc Welding	Poor
Machinability Rating	65

APPLICABLE SPECIFICATIONS

Form	Specific Sub-Form	System	Standard	Description
As Centrifugal Cast	Castings	ASTM	B271/B271M	COPPER BASE ALLOY CENTRIFUGAL CASTINGS
As Sand Cast	Castings	ASTM	B763/B763M	COPPER ALLOY SAND CASTINGS FOR VALVE APPLICATIONS
As Sand Cast	Castings	ASTM	B584	COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS
Ingot		FEDERAL	QQ-C-523	COPPER ALLOY INGOTS: BRASS (YELLOW HIGH STRENGTH) MANGANESE AND MANGANESE-ALUMINUM BRONZE
Ingot		ASTM	B30	COPPER BASE ALLOYS IN INGOT FORM
Valves