Nickel Aluminium Bronze AMS 4881 (UNS C99520)

Technical Data Sheet

Nickel Alumimium Bronze - Solid Bar AMS 4881. The additional heat treating process improves mechanical properties and the strength to weight ratio exceeding the range of typical aluminum bronzes. UNS C99520 is commonly used in applications involving heavy loads abrasion,friction, and deformation at high temperatures. In many cases UNS C99520 can replace UNS C63020 with the advantage of this material being available in tube form, which provides economic cost savings to you the customer.

Typical Mechanical Properties

Physical Properties - AMS 4881 Nickel Aluminium Bronze

Melting Point - Liquidus - 1930 F

Melting Point - Solidus - 1900 F

Density - 0.272 lb/in 3 at 68 F

Specific Gravity - 7.53

Electrical Resistivity - 122.8 ohms-cmil/ft @ 68

Electrical Conductivity - 8.5 %IACS @ 68 F

Thermal Conductivity - 24.2 Btu · ft/(hr · ft2· o F)

Coefficient of Thermal Expansion - 9.0 ·10 -6 per o F (68-572

Specific Heat Capacity - 0.1 Btu/lb/o F at 68 F

Modulus of Elasticity in Tension - 16000 ksi

Magnetic Permeability - 1.2

Machinability Rating - 50

Availability

Nickel Aluminium Bronze

Sizes available: AMS 4881

SOLID BAR 1/2" - 8" diameter

HOLLOW BAR 5/8" - 2 1/2"

For all other stock availability contact Sales.

Specifications

Continuous

ASTM B-505

AMS 4881

SAE J462, J461

Centrifugal

ASTM B-271

DELTA AB29

UNS C95520

Euro Equivalents Designation

CuAl10Fe5Ni5-B | CB333G

Standard

EN 1982 : 1998-11

Typical Uses of 4881 Nickel Aluminium Bronze

Oil & Gas - Rock Bit Bearings, Bushings, & Washers, BOP Parts, Wellhead Components

Aerospace - Landing Gear Bushings and Bearings

Automotive - Bearings, Off-Highway Truck Bushings, Forming Roll,Bearings

Marine - Pump Parts, Bushings

Industrial - Cams, Shafting, Hydraulic Bushings for Earth Moving, Equipment, Valve Balls, Cryogenics, Drill Guide Bushings

Military - Tank Track Bearings, Bushings, Aircraft Components