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AMS 4634-C64200

 

Stocked alloy specs

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Reference guide

Stocked size schedules

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✔ Standard-stocked product*

Extruded and drawn

Aluminum is the main alloying metal added to copper in aluminum bronze alloys such as C64200, also known as C642. A variety of aluminum bronzes of differing compositions have found industrial use, with most ranging from 5.00% to 11.00% aluminum by weight, the remaining mass being copper. Other alloying agents such as iron, nickel, manganese, and silicon are also oftentimes added. Aluminum bronzes are most valued for their high strength and corrosion resistance.


*Solids is standard stocked.
4634-C64200 spec sheet 4634-C64200 size schedule 4634-C64200 brochure Weight calculator Standard products

AMS 4634-C64200

Product description: Aluminum bronze
Tempers: HR50 drawn and stress relieved
Solids: 3/16" to 6" O.D.
Hex: 1/2" to 2" O.D.
Standard lengths: 144"

Typical uses

Automotive: Valve guides (automobile engine)
Electrical: Pole line hardware
Fasteners: Bolts, nuts
Industrial: Cams, gears, valve bodies, valve components, valve stems
Marine: Hardware

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C64200 B150
B150M		 J461
J463		 4634 QQ-C-465    

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% Ni%2 Al% Mn% Si%
Chemical composition according to AMS 4634

1Cu value includes Ag.    2Ni value includes Co.
Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
 
Rem.		  
0.05		  
0.20		  
0.50		  
0.30		  
0.25		 6.30-
7.60		  
0.10		 1.50-
2.20

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C64200 60 0.278

Mechanical properties

Mechanical properties according to AMS 4634

C64200

HR50 drawn and stress relieved Temper

Size range: up to 1/2" bars and rods inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 4D, min Hardness, internal Remarks
ksi MPa ksi MPa % HRB  
90 621 45 310 9 >80 inclusive
Size range: 1/2" to 1" bars and rods inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 4D, min Hardness, internal Remarks
ksi MPa ksi MPa % HRB  
85 586 45 310 12 >80 inclusive
Size range: over 1" to 2" bars and rods inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 4D, min Hardness, internal Remarks
ksi MPa ksi MPa % HRB  
80 552 42 290 12 >80 inclusive
Size range: over 2" to 3" bars and rods inclusive
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 4D, min Hardness, internal Remarks
ksi MPa ksi MPa % HRB  
75 517 35 241 15 >80 inclusive

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1840 °F 1004 °C
Melting point - solidus 1800 °F 982 °C
Density 0.278 lb/in3 at 68 °F 7.69 gm/cm3 at 20 °C
Specific gravity 7.69 7.69
Electrical conductivity 8% IACS at 68 °F 0.047 MegaSiemens/cm at 20 °C
Thermal conductivity 26 Btu/sq ft/ft hr/°F at 68 °F 45 W/m at 20 °C
Coefficient of thermal expansion 68-572 10 · 10-6 per °F (68-572 °F) 17.3 · 10-6 per °C (20-300 °C)
Specific heat capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 16000 ksi 110317 MPa
Modulus of rigidity 6000 ksi 41369 MPa

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Not recommended
Brazing Fair
Oxyacetylene welding Not recommended
Gas shielded arc welding Fair
Coated metal arc welding Fair
Spot weld Fair
Seam weld Fair
Butt weld Fair
Capacity for being cold worked Poor
Capacity for being hot formed Excellent
Forgeability Rating 80
Machinability rating 60

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in Fahrenheit.
Treatment Minimum* Maximum*
Annealing 1100 1300
Hot treatment 1300 1600

Common fabrication processes

Forging, hot forming, machining

Common fabrication processes provided by CDA

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C14500 C23000 C24000 C26000 C31400 C31600 C46400 C51000 C52100 C53400 C54400 C62400 C63000 C63020 C64200 C64210 C65100 C67300 C67400 C67410 C67600 C69300 C69400 C69430 C72900 (AMS 4596) C72900 (AMS 4597)
C72900 (AMS 4598) C83600 C83800 C84200 C84400 C84800 C85700 C86200 C86300 C86400 C86500 C86700 C87850 C89320 C89325 C89520 C89831 C89833 C89835 C89844 C90300 C90500 C90700
C90800 C90810 C91000 C91100 C91300 C91600 C91700 C92200 C92300 C92500 C92700 C92800 C92900 C93200 C93400 C93500 C93600 C93700 C93800 C93900 C94000 C94100 C94300 C94700
C94700HT C94800 C95200 C95300 C95300HT C95400 C95400HT C95410 C95410HT C95500 C95500HT C95510 C95520HT C95600 C95800 C95900 C96400 C96900HT C97300 C97600 C97800 C99500
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