Manganese-Aluminum Bronze - Copper Casting Alloy UNS C95700

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     Heat Treatment

Introduction

Manganese-aluminium/aluminum bronze copper casting alloy UNS C95700 is an alloy of copper-aluminum-iron and copper-aluminum/aluminum-iron-nickel.

The following datasheet provides the chemical composition and properties of UNS C95700 copper alloy.

Chemical Composition

The chemical composition of the UNS C95700 alloy is given in the following table.

Element Content (%)
Cu 75
Pb 0.030
Fe 2.0 - 4.0
Ni 1.50 - 3.0
Mn 11.0 - 14.0
Si 0.10
Al 7.0 - 8.50
Other 0.50

Physical Properties

The following table details the physical properties of UNS C95700 copper alloy.

Properties Metric Imperial
Density 7.53 g/cm3 0.272 lb/in³

Mechanical Properties

The mechanical properties of the UNS C95700 alloy are shown in the following table.

Properties Metric Imperial
Elastic modulus 117 GPa 16969 ksi
Poisson's ratio 0.34 0.34
Hardness, Brinell 180 180
Elongation at break 20.00% 20.00%
Machinability 50 50
Izod impact 27.00 J 19.9 ft.lb
Compressive strength 1035 MPa 150100 psi
Fatigue strength 231 MPa 33500 psi
Hardness, Rockwell B 85.0 - 90.0 85.0 - 90.0
Tensile strength 620 MPa 89900 psi
Yield strength 275 MPa 39900 psi
Reduction of area 24.00% 24.00%
Creep strength 31.0 MPa 4500 psi
Shear modulus 44.0 GPa 6380 ksi

Thermal Properties

The following table outlines the thermal properties of UNS C95700 copper alloy.

Properties Metric Imperial
Thermal expansion co-efficient (@20.0 - 300°C/68.0 - 572°F) 17.6 µm/m°C 9.78 µin/in°F
Thermal conductivity (@20°C/68°F) 12.1 W/mK 84.0 BTU in/hr.ft²°F

Other Designations

Equivalent designations to UNS C95700 alloy include:

  • ASTM B148
  • ASTM B30
  • ASTM B505
  • QQ C390

Fabrication and Heat Treatment

Machinability

UNS C95700 copper alloy has a machinability rating of 50.

Welding

The preferred welding technique for UNS C95700 alloy is soldering, brazing, carbon arc welding, gas shielded arc welding and coated metal arc welding. Oxyacetylene welding is not recommended for this alloy.

Heat Treatment

The stress relieving temperature of UNS C95700 copper alloy is 316°C (600°F). It does not respond to heat treatment.


Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type
Submit