Key Features

Equivalent Specifications

US
ASTM B 150 C63020

European
EN 12163 CW307G
EN 12165 CW307G
EN 12167 CW307G
EN 12420 CW307G
EN 1653 CW307G
BS 2B 23
BS B 23
DTD 197A
BS 2874/2 CA104
DIN 17665 CuAl10Ni5Fe4
DIN 17672 CuAl10Ni5Fe4 WN 2.0966
NF L14-705 CuAl10Ni5Fe UA11N
NF A 51 -116 CuAl10Ni5Fe4
GAM MM 11 CuAl9Ni5Fe4
GAM MM 12

Applications

Typical applications for the BS 2B 23 nickel aluminium bronze material includes marine fasteners, hardware and fittings, thrust washers, gears, control bushes. Pump and valve components and forgings for marine assemblies

Aerospace
Landing gear components, wing actuators, and door hardware.

Mining, Offshore and General Engineering
Non-sparking safety tooling, valve stems and seats, wear plates, welding clamps, valve spindles and components, fasteners and bearing bushes for gas, oil, coal, mining, chemical and explosives industries.

Power Generation
Condenser end plates for steam generation equipment and desalination plants. Fire fighting equipment for off-shore platforms.

Tel +44 (0) 1782-816888  
Email sales@copperalloys.net
Print this page »

BS 2B 23

BS 2B 23
Nickel Aluminium Bronze
CuAl10Ni5Fe5

A British Nickel Aluminium Bronze where its unique combined properties of high strength, good fatigue, excellent corrosion resistance in sea water, non sparking and wear properties makes it a popular choice across the whole spectrum of industry.

BS 2B 23 (formerly BSB23) has very high anti galling properties when running against most grades of steels and is used around the world for aerospace landing gear bushes and bearings where its combination strength, fatigue, wear properties, shock resistance and corrosion resistance are well proven.

This is a wrought alloy that benefits from extreme consistency in properties, fine equiaxed grain structure and low cost volumetric inspection. Furthermore representative test pieces are taken giving accurate analysis of properties from material to component.

Composition

ElementCu Al Ni+Co Fe Mn Si Sn Zn Pb Imps
%Bal 8.5.0-11.0 4.0-5.5 4.0-5.5 0.5max 0.2max 0.1max 0.4max 0.05max 0.5max

Typical Mechanical Properties

FormSize Range Yield 0.5% UTS Elong Hardness
Imperial Metric Ksi MPa Ksi MPa % (HB)
Forged 0.7-3.15" >18-<=80mm 55.1-65.2 380-450 101.5-120.4 700-830 16-24 180-230
Forged >3.15" >80mm47.8-54.8 330-378 101.5-107.3 700-740 20-25 180-193

Optimised material production

  1. Precision machining - Copper Alloys Ltd. has a deep understanding of machining in all of its alloys. Buying components direct from the material producer will be cost effective and risk-free for the customer.
  2. Project management is available for full ranges of kit and components. Harnessing the Copper Alloys quality management system guarantees delivery on-time and in full.
  3. Tailored and customised properties (physical and mechanical) beyond those of the specification to meet special requirements

Copper Alloys Manufacturing Ranges

With very little limitation on size, BS 2B 23 is available as standard in rod, bar, blocks, rings, tubes and discs up to a piece weight of 4,500kg/9,900lbs.

Copper Alloys is also regularly making customised shaped forgings and can increase piece weight up to 20,000kg/44,000lbs.

Copper Alloys Ltd also offers finished machined components in all alloys, complete project management and tailored mechanical properties beyond those of the specification to meet special requirements.

All information is supplied for guidance only and gives no guarantee for end applications

Typical Physical Properties

(Courtesy Def Stan 02-879)
MetricMetric
Density 0.275lb/in³ @ 68º F 7612kg/m³ @ 20ºC
Specific Gravity 7.6 7.6
Specific Heat 0.1 Btu/lb º F @68º F 418.7 J/kg ºC @20 ºC
Electrical Conductivity 7-9 IACS @ 68º F 4.1-5.2m/Ωmm²@20 ºC
Thermal Conductivity 22-27Btu.ft(hr.ft² º F) @68º F 0.38-0.47 W/cm ºC @20 ºC
Thermal Expansion 9 x10ˉ 6 per º F (68-572 º F ) 17 x10ˉ 6 perºC (20-300 ºC)
Electrical Resistivity 120-150Ω-cmil/ft @ 68º F 19.1-24.6 µ Ω-cm@20 ºC
Relative Magnetic Permeability 1.5µ
Machining Index 20 (Based on free machining brass 100%)
Modulus of Rigidity(heat treated) 7.1-7.4 x10³ ksi 48.9-51.0 GPa
Modulus of Elasticity (heat treated)
(In Tension) 		19-19.9 x10³ ksi 131-137 GPa
Fatigue Strength(rotating beam) 50.5ksi @1x 106 348 Mpa@1x 106
Melting Range 1940-1965 ºF 1060-1075ºC
Hot Working Range 1560-1785 ºF 850-975 ºC
Cold Working Limited
Cryogenic Retains properties down to – 302 ºF (-190 ºC)
Elevated Temperatures Retains properties to 662 ºF (350 ºC)

Optimised material production

  1. Precision machining - Copper Alloys Ltd. has a deep understanding of machining in all of its alloys. Buying components direct from the material producer will be cost effective and risk-free for the customer.
  2. Project management is available for full ranges of kit and components. Harnessing the Copper Alloys quality management system guarantees delivery on-time and in full.
  3. Tailored and customised properties (physical and mechanical) beyond those of the specification to meet special requirements

Joining

(BS EN 150 156114-G (welding specification) ) Recommended Welding Processes
  1. Tungsten inert gas (TIG) or gas tungsten arc(GTAW)
  2. Metal inert gas (MIG) or gas metal arc (GMAW)
  3. Manual arc (MMA)
  4. Friction welding
  5. Laser welding
  6. Brazing (possible with special fluxes)
  7. Soldering or oxy-acetylene (not recommended)

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.