C67500

C675 exhibits commendable torsional properties and offers solid general corrosion resistance. Manganese bronze, in general, is capable of withstanding exposure to dry gases, dilute alkalies, sulfides, as well as most organic solvents and acids. However, it’s important to note that C675 may not be suitable for contact with ammonia, mercury, and the majority of chlorine gases, and such interactions should be avoided.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu57.0060.00
Pb0.20
Sn0.501.50
Al0.25
Fe0.802.00
Mn0.050.50
Total Others0.50
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO ASTM B138 (AS PER TEMPER HO2)
Range (Inch) From To UTS Min (Ksi) PS Min (Ksi) Elongation Min (%) Hardness Min (HRB) Hardness Max
Round (Dia) 0.0591.000723613
1.0002.500703515
2.5002.953653217
Hex (A/F) 0.1181.000723613
1.0002.500703515
2.5002.756653217
Square (A/F) 0.1181.000723613
1.0002.362703515
Rectangle (Thickness) 0.1181.000723613
1.0001.968703515
Range (mm) From To UTS Min (Mpa) PS Min (Mpa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.52550025013
256545024015
657545022017
Hex (A/F) 32550025013
256545024015
657045022017
Square (A/F) 32550025013
256045024015
Rectangle (Thickness) 32550025013
255045024015
PHYSICAL PROPERTIES
Melting Point – Liquidus°F1630
Melting Point – Solidus°F1590
Density lb/cu in. at 68°F0.302
Specific Gravity8.36
Electrical Conductivity % IACS at 68°F24
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F61
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)11.8
Specific Heat Capacity Btu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tension ksi15000
Modulus of Rigidity ksi5600
FABRICATION PROPERTIES
Technique Suitability
SolderingExcellent
BrazingExcellent
Oxyacetylene WeldingGood
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingNot Recommended
Spot WeldGood
Seam WeldFair
Butt WeldGood
Capacity for Being Cold WorkedPoor
Capacity for Being Hot FormedExcellent
Forgeability Rating80
Machinability Rating30

C67500

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