Cast C84400
This group of alloys is typically found in plumbing applications. C84400 is the most widely used alloy in the semi-leaded red brass family, known for its reasonable cost with good machining and casting properties. The lead content ensures pressure tightness. Red brass is also used for low-cost bearing materials under low loads.
Information
PRODUCT DESCRIPTION: Leaded Semi-Red Brass
SOLIDS: 1/2" to 13" O.D.
TUBES: 1” to 16” O.D.
RECTANGLES: Up to 20”
STANDARD LENGTHS: 144”
SHAPE/FORM: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
Typical Uses
ARCHITECTURE: ornamental fixtures
BUILDERS HARDWARE: cases for dead bolt locks, dead bolt locks, door hardware for prisons, hardware
BUILDING: cooling equipment, heating equipment
CONSUMER: musical instruments
ELECTRICAL: electrical equipment
INDUSTRIAL: low-pressure fittings, pump fixtures, valve bodies for the water industry, valve seat, valves, valves for water meters
MARINE: boat parts, marine hardware, nuts for transducers
PLUMBING: fixtures, pipe fittings
Similar or Equivalent Specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C84400 | B505 B505M B271 B271M B584 | WW-U-516 | Valve Metal |
Chemical Composition
| Cu%1 | Pb% | Sn% | Zn% | Fe% | P% | Ni%1,2 | Al% | S% | Sb% | Si% |
|---|---|---|---|---|---|---|---|---|---|---|
| 78.00-82.00 | 6.00-8.00 | 2.30-3.50 | 7.00-10.00 | 0.40 | 1.50 | 1.00 | 0.005 | 0.08 | 0.25 | 0.005 |
Chemical Composition according to ASTM B505/B505M-18
¹In determining Cu min., Cu may be calculated as Cu + Ni. ²Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.5% min. Single values represent maximums.
Machinability
| Copper Alloy UNS No. | Machinability Rating | Density (lb / in³ at 68°F) |
|---|---|---|
| C84400 | 90 | 0.314 |
Mechanical Properties
| Tensile Strength, min | Yield Strength, at 0.5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Brinell Hardness (500 kg load) | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical BHN | |
| 30 | 207 | 15 | 103 | 16 | 55 | |
Chemical Composition according to ASTM B505/B505M-18
Physical Properties
| US Customary | Metric | |
|---|---|---|
| Melting Point - Liquidus | 1840 °F | 1004 °C |
| Melting Point - Solidus | 1549 °F | 843 °C |
| Density | 0.314 lb/in³ at 68 °F | 8.69 gm/cm³ at 20 °C |
| Specific Gravity | 8.69 | 8.69 |
| Electrical Conductivity | 16.4% IACS at 68 °F | 0.095 MegaSiemens/cm at 20 °C |
| Thermal Conductivity | 41.8 Btu/sq ft/ft hr/°F at 68 °F | 72.4 W/m at 20 °C |
| Coefficient of Thermal Expansion 68-572 | 10 · 10-6 per °F (68-572 °F) | 17.3 · 10-6 per °C (20-300 °C) |
| Specific Heat Capacity | 0.09 Btu/lb/°F at 68 °F | 377.1 J/kg at 20 °C |
| Modulus of Elastic in Tension | 13000 ksi | 89600 MPa |
| Magnetic Permeability | 1 | 1 |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing* | Good |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Not Recommended |
| Coated Metal Arc Welding | Fair |
| Machinability Rating | 90 |
Thermal Properties
| Treatment | Value* | Time** |
|---|---|---|
| Stress Relief | 500 | |
| Solution Treatment | 0 |