Introduction
C90300 is a tin bronze sand-casting grade covered by ASTM B584. Typical applications include pump bodies and impellers, valve bodies, bearings, bushings and gears.
| Field | Value |
|---|---|
| Designation | C90300 |
| Material Type | Bronze |
| Sub Type | Tin Bronze |
| Product Form | casting |
Manufacturing Process
Sand Casting
Equivalent Materials
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM B584 | Standard Specification for Copper Alloy Sand Castings for General Applications | 14 | C90300 | UNS C90300, source_designation modified G bronze, 88-8-0-4 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM B584Edition 14 · wt.% |
|---|---|
| Cu | 86.0–89.0[1] |
| Zn | 3.0–5.0 |
| Sn | 7.5–9.0 |
| Pb | ≤ 0.30 |
| Fe | ≤ 0.20 |
| Al | ≤ 0.005 |
| Si | ≤ 0.005 |
| P | ≤ 0.05 |
| S | ≤ 0.05 |
| Ni+Co | ≤ 1.0[2] |
Notes
ASTM B584 · Edition 14
[1] Cu: In determining copper minimum, copper may be calculated as copper plus nickel. Optional source-defined copper-minimum calculation; do not sum measured or specified limits automatically.
[2] Ni+Co: Nickel including cobalt; combined limit; In determining copper minimum, copper may be calculated as copper plus nickel. Optional source-defined copper-minimum calculation; do not sum measured or specified limits automatically.
Heat Treatment
ASTM B584–14
N/A
Mechanical Properties
Core Mechanical Properties
Notes
ASTM B584 · Edition 14
[1] Tensile Strength: inch-pound
[2] Yield Strength: inch-pound; 0.5% extension under load
Welding Conditions
N/A
Applications
Tin bronze ASTM B584 C90300 is used for pump bodies and impellers, valve bodies, bearings, bushings and gears. Additional applications include gear blanks, piston rings and steam fittings. Other cast components used in this material family include valve parts. Applications include power-transmission machinery, industrial fluid-handling equipment and selected marine systems.
Loading, lubrication and the actual process medium remain relevant; a steam-equipment example does not establish a general pressure or temperature rating.
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