Aluminium Silicon Bronze AMS 4631 (UNS C64200)

Technical Data Sheet

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

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

Availability

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.

Specifications

CA107

BS 2872

BS 2874

DGS 8453A

DGS 1044

NES 834

CW301G

CW302G

DELTA CA10

DELTA CA12

AMS 4631

AMS 4634

ASTM B124

ASTM B150

ASTM B249

ASME SB150

SAE J463

SAE J461

BS EN12163

BS EN12164

BS EN12165

BS EN12167

BS EN12420

CuAl7Si2

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.