Aluminum Silicon Bronze 642 / C642 / C64200

ASTM B150, AMS 4631C, AMS 4634, QQ-C-465

Farmer’s Copper Ltd. maintains an inventory of C64200 aluminum silicon bronze. Copper alloy 642 is non-magnetic, has good fatigue, and is galling resistant. It has the highest machinability rating of bronzes and brasses without the addition of lead. C642’s combination of machinability, strength, hot forgeability, and wear and corrosion resistance make this a superior copper alloy.

Typical Applications for C64200

  • Aircraft bushings
  • Fasteners
  • Marine industry
  • Chemical processing equipment

Farmer’s Copper, established in 1920, continues to serve the metal industry. Our knowledgeable sales team is willing to assist you with your C642 needs, contact us today!

List of standard sizes for C64200

Round bar – ½” Dia. thru 6”

Available Shapes

Aluminum Silicon
Bronze Bar

Fabrication Properties

Joining 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

ASTM Standard Designation for C64200: ASTM B150
AMS Standard Designation for C64200: AMS 4631c
Federal Specifications for C64200: QQ-C-465

Chemical Composition
(%max., unless shown as range or min.)

 

Cu(1)

Al

As

Fe

Pb

Mn

Ni(2)

Si

Sn

Zn

Min./Max.

Rem.

6.3-7.6

.09

.30

.05

.10

.25

1.5-2.2

.20

.50

Nominal

91.2

7.0

-

-

-

-

-

1.8

-

-

Contact one of our sales representatives today
to inquire about a quote from Farmers Copper
or call us today at (800) 231-9450