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-23
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-23
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 |