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CuAl7Si2

ASTM B 150-12 HR50, ASTM B 124-14a, SAE AMS 4634B, QQC-465B AM1

  • Automotive
  • Electrical
  • Fasteners
  • Marine

Typical Uses

 

Round : 1/2" - 4"
Bar Length : 10ft - 12ft
Hexagonal : 1/2" - 2"
Square : 1/2" - 3"
Rectangle : up to 4"
Product availabillity

C-64200

Chemical Composition

(%max, unless shown as range or min)

Cu*

Al

Fe

Mn

Ni**

Si

Sn

Zn

Pb

Min/Max

Rem

6.3-7.6

0.030

0.10

0.25

1.5-2.2

0.20

0.50

0.05

* Cu value includes Ag.
** Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.5% min.

Applicable Specifications

* Bar, Rod – ASTM B150
* AMS 4640
* SAE J461
* SAE J463

Fabrication Processes

* Forging
* Hot Forming

Standard Temper Designation:

* Bar, Rod – HR50 – Drawn and Stress Relieved
* Shapes – M30 – As Hot Extruded; O30 – Hot Extruded and Annealed

Fabrication Properties

Joining Technique Suitability
Soldering Not Recommended
Brazing Fair
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Good
Spot Weld Good
Seam Weld Good
Butt Weld Good
Capacity for Being Cold Worked Poor
Capacity for Being Hot Formed Good
Forgeability Rating 75
Machinability Rating 30

Mechanical Properties (ASTM B150)

Form

 

Diameter or Distance Between

Parallel Surfaces, in. [mm]

 

Tensile Strength, min

 

Yield Strength, at 0.5% Extension Under Load, min

Elongation in 4xdiameter

or 4xthickness, min, %

 

ksi

MPa

ksi

MPa

Shapes

All Sizes

85

585

42.5

295

10

Rod and Bar

1/2 [12.7] to 1 [25.4] incl.

110

760

68

470

10

over 1 [25.4] to 2 [50.8] incl.

110

760

60

415

10

over 2 [50.8] to 3 [76.2] incl.

105

725

55

380

10

Physical Properties

US Customary Metric
Melting Point – Liquidus 1930 F 1054 C
Melting Point – Solidus 1895 F 1035 C
Density 0.274 lb/in3 at 68 F 7.58 gm/cm3 at 20 C
Specific Gravity 7.58 7.58
Electrical Resistivity 116 ohms-cmil/ft at 68 F 19.28 microhm-cm at 20 C
Electrical Conductivity 7 %IACS at 68 F 0.041 MegaSiemens/cm at 20 C
Thermal Conductivity 22.6 Btu · ft/(hr · ft2·°F) at 68 F 39.1 W/m ·°K at 20 C
Coefficient of Thermal Expansion 9·10-6 per °F (68-572 F) 16.2·10-6 per °C (20-300 C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 F 377.1 J/kg · °K at 20 C
Modulus of Elasticity in Tension 17500 ksi 121000 MPa
Modulus of Rigidity 6400 ksi 44130 MPa