Brass - Copper Alloy UNS C43400

Sep 13 2012

Topics Covered

Introduction
Physical Properties
Mechanical Properties
Thermal Properties

Introduction

Brass-copper alloy UNS C43400 has excellent cold working properties making it ideal for machining. High thermal conductivity enables UNS C43400 copper alloy to be used in heat exchangers. Architects prefer using brass owing to its ability to change color and shape depending on the impurities present.

The following datasheet summarizes the physical and mechanical properties of UNS C43400.

Physical Properties

The physical properties of UNS C43400 copper alloy are shown in the following table.

Properties Metric Imperial
Density 8.75 gm/cm3 0.316 lb/in3
Melting point - liquidus 1021ºC 1870ºF
Melting point - solidus 988ºC 1810ºF

Mechanical Properties

The following table summarizes the mechanical properties of UNS C43400.

Properties Metric Imperial
Tensile strength 310 - 607 MPa 45000 - 88000 psi
Yield strength 103 - 517 MPa 14900 - 75000 psi
Elongation at break 49.00% 49.00%
Machinability 30% 30%
Modulus of elasticity in tension 18000 ksi 124000 MPa

Thermal Properties

The thermal properties of UNS C43400 copper alloy are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@Temperature 20.0 - 300 °C ) 18.9 µm/m°C 10.5 µin/in°F
Thermal conductivity 137 W/mK 951 BTU-in/hr.ft²°F

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