C38000
Architectural Bronze, Low Leaded
Extrusion alloy for architectural shapes. Machines well and takes the warm bronze finish specified for storefronts, rails, and trim.
Tensile Strength
52–62 ksi
Yield Strength
20–45 ksi
Machinability
80 / 100
Density
0.306 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 55 | 60 |
| Zinc (Zn) | — | Remainder |
| Lead (Pb) | 1.5 | 2.5 |
| Aluminum (Al) | — | 0.5 |
| Iron (Fe) | — | 0.35 |
Physical Properties
| Density | 0.306 lb/cu in |
|---|---|
| Specific Gravity | 8.47 |
| Melting Point (Solidus) | 1620°F |
| Melting Point (Liquidus) | 1650°F |
| Electrical Conductivity | 25% IACS |
Mechanical Properties
| Tensile Strength | 52–62 ksi |
|---|---|
| Yield Strength | 20–45 ksi |
| Elongation | 15–30% |
| Hardness | 55–65 Rockwell B |
| Machinability Rating | 80 |
Thermal Properties
| Thermal Conductivity | 65 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 11.5 × 10⁻⁶ /°F |
| Specific Heat | 0.09 Btu/lb·°F |
Fabrication Properties
Soldering
Brazing
Oxyacetylene Welding
Gas Shielded Arc
Coated Metal Arc
Cold Working
Hot Forming
Typical Applications
- Architectural extrusions
- Storefront framing
- Thresholds
- Handrails and railings
- Decorative moldings
- Door and window trim
Applicable Specifications
- ASTM B455
- SAE J461
- SAE J463
Frequently Asked Questions
Common questions about C38000 Architectural Bronze, Low Leaded specifications, applications, and material properties.