Tin Bronze 903 / C903 / C90300

ASTM B505, SAE 620

Farmer’s Copper Ltd. keeps a regular stock of Tin Bronze 903 in solid rod form. C90300 offers good mechanical and corrosion resistance; it is often used in castings for liquid and gas, not to mention valves and pumps. Copper Alloy 903 can be excellently soldered, while offering good brazing. C903 holds a characteristic of high wear resistance, which has made it a common alloy to many usages.

Typical Applications for C90300

  • Seal rings
  • Bushings
  • Bearings
  • Valve Components

Farmer’s Copper Ltd. was established in 1920; throughout the years we have built great customer relationships through meeting the goals set by our customers. Contact us today to allow our sales teams to meet your bronze goals!

List of standard sizes

Solid Rod – 1” Dia. thru 6”

Fabrication Properties

Joining Technique

Suitability

Soldering

Excellent

Brazing

Good

Oxyacetylene Welding

Fair

Gas Shielded Arc Welding

Fair

Coated Metal Arc Welding

Fair

Machinability Rating

30

ASTM Standard Designation for C90300: ASTM B505

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

 

Cu(1)

Al

Sb

Fe

Pb

Ni(2)

P(3)

Si

S

Sn

Zn

Min./Max.

86.0-89.0

.005

.20

.20

.30

1.0

.05

.005

.05

7.5-9.0

3.0-5.0

Nominal

87.5

-

-

-

-

-

-

-

-

8.3

4.0

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