Aluminium Silicon Bronze AMS 4631 (UNS C64200)
Technical Data Sheet
|Chemical Composition Limits|
| AMS 4631
||Rem||6.3 - 7.6||0.09||0.3||0.05||0.10||0.25||1.5 - 2.2||0.20||0.50|
AMS 4631 (UNS C64200) Silicon aluminum bronze combines the self lubricity of the silicon with the
higher mechanical properties of aluminum bronze and is sometimes used in place of C63000 where specifications permit. C64200 is free-machining
and has good anti-galling and anti-seizing properties. Typical applications involve valve stems, gears, marine and pole line hardware, wing pylons,
bolts, nuts, bushings and valve body components.
Typical Mechanical Properties
Tensile Strength ksi
|Yield Strength ksi||Elongation 4D %|
|AMS 4631||0.5" - 1.00"||85||45||12|
|AMS 4631||1.00" - 2.00"||80||42||12|
|AMS 4631||2.00" - 3.00"||75||35||15|
Physical Properties - AMS 4631
Melting Point - Liquidus - 1840 F
Melting Point - Solidus - 1800 F
Density - 0.278 lb/in3 at 68 F
Specific Gravity - 7.69
Electrical Resistivity - 113.0 ohms-cmil/ft @ 68 F
Electrical Conductivity - 8 %IACS @ 68 F
Thermal Conductivity - 26.0 Btu · ft/(hr · ft2·oF)at 68F
Coefficient of Thermal Expansion - 10.0 ·10-6 per oF (68-572 F)
Specific Heat Capacity - 0.09 Btu/lb/oF at 68 F
Modulus of Elasticity in Tension - 16000 ksi
Modulus of Rigidity - 6000 ksi
Machinability Rating - 60
Sizes available: AMS 4631 & AMS 4634
SOLID BAR 3/16” - 8” diameter
HEX BAR 5/8" - 2 1/2
For all other stock availability contact Sales.
Typical Uses of Aluminium Bronze AMS 4631
Aerospace - Landing Gear Bushings & Bearings, Valve Guides, Stems,and Seats
Other Industrial - Corrosion Resistant Parts, Wear Rings, Machine Tool Parts,Piston Guides, Worm Wheels, Hot Mill Gurdes
Marine - Propeller Hubs, Wear Rings, Hardware, Worm Gears, Shafts, Sleeves.
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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.
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