ASTM B150: C63200 is an American grade of nickel aluminium bronze. Containing around 9% aluminium, 5% nickel and 4% iron the alloy offers an inherent high strength and hardness combined with a very good toughness and an excellent resistance to wear, shock and abrasion.

In addition, C63200 has low magnetic permeability, making it ideal for use on instrumentation systems and seawater piping systems and also offers a very good corrosion, erosion and cavitation resistance in seawater along with a high retention of mechanical properties at low and elevated temperatures.

Nominal Composition

 Copper Rem 
Al  8.7 - 9.5%
Ni 4.0 - 4.8%
Fe 3.5 - 4.3%
Mn 1.2 - 2.0%

Key Features

  • High resistance to corrosion and erosion
  • Very good strength and toughness
  • Excellent resistance to shock, wear and abrasion
  • Low magnetic permeability
  • High and low temperature performance

Typical Mechanical Properties

Form Size Range   Yield 0.2%   UTS   Elong % Hardness (HB)
  Imperial Metric Ksi MPa Ksi MPa % (HB)
TQ50 <=3" <= 80mm 50-56 345-386 90-107 621-738 15-25 190-230
TQ50 <=3-5" 80-130mm 50-54 345-372 90-105 621-738 18-23 190-230
TQ50 >5" >130mm 50-53 345-365 90-104 621-717 18-23 190-230

Typical Physical Properties

Property Value
Melting Point 1046°C
Density 7.64 g/cm³
Thermal conductivity (RT) 36 W/m°K
Electrical conductivity 7 % IACS
Thermal expansion coefficient (20-200°C) 9 x 10-6 /°C
Modulus of Elasticity 44 GPa

Fabrication Properties

Property Value
Hot Formability Not Recommended
Cold Formability Not Recommended
Machinability rating (free cutting brass = 100) 30%
Stress Relieving Temp. Range 705°C
Maximum operating temperature 230°C

Joining Methods

Method Rating
Soldering Fair
Brazing Fair
Oxy-acetylene welding Not recommended
Gas-shielded arc welding Excellent

Typical Uses

Typical applications for the C63200 material include marine fasteners, valve assemblies, drive shafts, sea water pump bodies, weapons handling, bushes, sleeve bearings, nuts & bolts

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.