C86500

Description

Manganese bronze alloys can operate under very high loads and speeds. Besides excellent mechanical qualities, these alloys have good corrosion resistance. The standard alloy in this group is high tensile C86300, which is comprised of copper, manganese, aluminum, and iron. This combination raises the tensile strength to over 110,000 KSI.

Automotive	Builders Hardware	Electrical	Industrial	Marine
Weld Guns	Brackets	Electrical Hardware	Compressors	Boat Parts
			Forming Dies for Wood Pulp Industry	Clamps
			Frames	Covers for Marine Hardware
			Gears	Propellers for salt and fresh water
			Hooks	Rudders
			Lever Arms
			Machinery
			Machinery Parts (Substituted for Steel and Malleable Iron)
			Machinery Parts requiring High Strength
			Pressing Dies for Wood Pulp
			Struts
			Wear Rings for Pressing Dies for Wood Pulp Industry

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) In determining Cu min., Cu may be calculated as Cu + Ni. (2) Cu + Sum of Named Elements 99.0% min. (3) Ni value includes Co.
Min (%)	55.0			36.0	0.40		0.50	0.10
Max (%)	60.0	0.40	1.0	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)	Creep Strength (0.1% per 10,000 hours) (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	65 Min for Standard 65 Min for Standard	25 Min for Standard	20 Min for Standard 20 Min for Standard
As Continuous Cast	As Continuous Cast	M07	70 Min for Standard 70 Min for Standard	25 Min for Standard	25 Min for Standard 25 Min for Standard
As Sand Cast	As Sand Cast	M01	65 Min for Standard 71 Typ	25 Min for Standard 29 Typ	20 Min for Standard 30 Typ	100 Typ	130 Typ	32 Typ	32 Typ	24 Typ	79 Typ	28 Typ	20 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	22
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F	49.6
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F)	11.3
Specific Heat CapacityBtu/ lb /°F at 68°F	0.09
Modulus of Elasticity in Tensionksi	15000
Magnetic Permeability	1.09 ⁽¹⁾

FABRICATION PROPERTIES

Technique	Suitability
Soldering	Fair
Brazing	Fair
Oxyacetylene Welding	Poor
Gas Shielded Arc Welding	Poor
Coated Metal Arc Welding	Poor
Machinability Rating	26

APPLICABLE SPECIFICATIONS

Form	Specific Sub-Form	System	Standard	Description
As Centrifugal Cast	Castings	ASTM	B271/B271M	COPPER BASE ALLOY CENTRIFUGAL CASTINGS
	Castings	AMS	4860	MANGANESE BRONZE CASTINGS, SAND AND CENTRIFUGAL, AS CAST
	Castings	SAE	J462	CAST COPPER ALLOYS
	Castings	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
As Continuous Cast	Castings	ASTM	B505/B505M	COPPER BASE ALLOY CONTINUOUS CASTINGS
As Die Cast	Castings	ASTM	B176	BRASS DIE CASTINGS
As Sand Cast	Castings	AMS	4860	MANGANESE BRONZE CASTINGS, SAND AND CENTRIFUGAL, AS CAST
	Castings	SAE	J462	CAST COPPER ALLOYS
	Castings	ASTM	B584	COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS
	Castings	SAE	J461	WROUGHT AND 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
Valves