Free-Machining Brass
Overview
C36000 is the standard free-machining brass — rated at 100% machinability, the benchmark against which all other copper alloys are measured. It is the most widely used brass for screw machine products and precision parts.
As a C36000 free-machining brasssupplier, Triton Bronze & Metals stocks brass in round bar, hex bar, square bar, and more — all cut to length and shipped from US mills. Mill test reports available on request for full material traceability.
Chemical Composition — C36000
| Element | Content |
|---|---|
| Copper (Cu) | 60-63% |
| Lead (Pb) | 2.5-3.7% |
| Zinc (Zn) | Remainder |
| Iron (Fe) | 0.35% max |
Mechanical Properties
Physical Properties
| Property | Value |
|---|---|
| Density | 0.307 lb/in³ (8.50 g/cm³) |
| Melting Range | 1630-1650°F (888-899°C) |
| Modulus of Elasticity | 14,000 ksi (97 GPa) |
| Thermal Conductivity | 67.0 BTU/ft·hr·°F (116 W/m·K) |
| Coefficient of Thermal Expansion | 11.4 × 10⁻⁶ /°F (20.5 × 10⁻⁶ /°C) |
| Electrical Conductivity | 26% IACS |
Applicable Specifications
- ✓ASTM B16 (Free-Cutting Brass Rod/Bar)
- ✓ASTM B124 (Forging Rod/Bar)
- ✓SAE J461 / J463
- ✓Federal QQ-B-637 (Comp 2)
Fabrication & Joining
| Process | Rating |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Fair |
| Arc Welding | Not Recommended |
Common Applications
- •Screw machine products
- •Fittings and connectors
- •Valve stems
- •Gears and pinions
- •Fasteners
- •Architectural hardware
Frequently Asked Questions
What forms is C36000 Free-Machining Brass available in?+
We supply C36000 in Round Bar, Hex Bar, Square Bar, Flat Bar. All material is sourced from US mills, cut to length, and shipped directly to your facility.
What are the typical applications for C36000?+
C36000 is commonly used for screw machine products, fittings and connectors, valve stems, gears and pinions. Contact us for application-specific recommendations.
Can I get a mill test report for C36000?+
Yes. Mill test reports (MTRs) are available upon request for all C36000 orders. We can also provide material certifications to meet your quality requirements.
Dimensional Tolerances
For standard finishing allowances, diameter tolerances, and concentricity data for continuous cast brass products, see our tolerance reference.
View Tolerances & Finishing Allowances →Need Finished Parts?
Need C36000 machined to spec? We offer custom machined parts, bronze bushings, bearings, and wear components in any alloy we stock.
View Finished Parts & Components →Available Forms
- Round Bar
- Hex Bar
- Square Bar
- Flat Bar
Need C36000?
Tell us the form, size, and quantity. We'll respond with a competitive quote — typically within hours.
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