Equivalent Specifications

ASTM B 124 C46400
ASTM B21 C46400
ASTM B171 C46400
BS 2874 CZ133
CW719R

Key Features

A copper zinc alloy with a small addition of tin to aid corrosion resistance. The alloy is a single alpha phase and has good ductility.

This naval brass was originally used in marine applications and has good corrosion resistance in moderately polluted river water and clean sea water. The alloy is widely used in heat exchange equipment with moderate operating conditions.

Typical Uses

Chemical and mechanical: The alloy is used for condenser tubes, tubeplates and other heat exchange components - principally for oil refineries and power stations.

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ASTM C46400

A lead free naval brass which is basically a 60/40 copper zinc alloy with the addition of 1% Sn for corrosion resistance in sea water. The alloy meets the requirements of ASTM B 21 C46400 Alloy A , ASTM B 124 C46400, AMS 4611, AMS 4612 and QQ-B-639. This alloy is also noted for its resistance to wear, fatigue, galling, and stress corrosion cracking.

Description	Naval Brass
Nominal Composition	CuZn40Sn
Alloy Type	Wrought

Typical Mechanical Properties

Tensile Strength (N/mm²)	380
Proof/Yield Strength (N/mm²)	170
Elongation (%)	33
Hardness Brinell
Impact Izod J20°C

Typical Physical Properties

Density g/cm³	8.4
Melting Temperature Range °C	885-900
Thermal Conductivity W/mK	116
Electrical Resistivity μΩ.m15°C	6.5
Coefficient of Thermal Expansion 0-250°C	21.2
Relative Magnetic Permeability	< 1.01
Coefficient of Friction

Copper Alloys Ltd has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys Ltd's technical team on +44 (0) 1782-816888, or email sales@copperalloys.net.

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be acepted by the Company in respect of any action taken by any third party in reliance thereon.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose.

Any advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. Any contract between the Company and a customer will be subject to the Company's Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions, a copy of which is available on request.