CuZn9Pb2 — C31400
CuZn9Pb2 – UNS.C31400 Lead Commercial Bronze Alloys, which is commonly named "Commercial Bronze", and it is a free machining brass with a higher electrical and thermal conductivity than that of
CuZn9Pb2 — C31400
CuZn9Pb2 – UNS.C31400 Lead Commercial Bronze Alloys, which is commonly named "Commercial Bronze", and it is a free machining brass with a higher electrical and thermal conductivity than that of standard free machining brass. C31400 combines the natural corrosion resistance of C22000 with the machinability typical of leaded brasses. Like C22000,it is an alpha brass nominally composed of 89% copper and 9% zinc, but it also contains abt. 2% lead in order to impart free-cutting characteristics. The relatively low zinc content of C31400 provides excellent corrosion resistance in potable water along with a pleasing golden color that matches C22000 hardware. Alloy C31400 is also suitable for outdoor use due to its resistance to stress corrosion cracking and to corrosion in general, but where the highest strength is not required.
Where C31400 Is Used
Typical end uses published by ALB for this grade.
Electrical
Electrical Contacts, Electrical Plug Type Connector, Connectors for Wires and Cables
Fastener
Nuts, Screws, Screw Machine Parts
Industrial
Pickling Crates, Plumbing Components, Pickling Racks, Pickling Fixtures, Architectural Hardware
Specifications And Material Data
| Cu | 87.50-90.50% |
|---|---|
| Pb | 1.30-2.50% |
| Fe | 0.10% Max. |
| Ni | 0.70% Max. |
| Zn | Balance |
Copper plus additions equal 99.50% minimum.
| Specific Gravity | 8.83 g/cm3 |
|---|---|
| Coefficient of Thermal Expansion per °C | 18.40 x 10-6 /K (20-300°C) |
| Electrical Conductivity (% IACS) | 42.0% IACS @ 68 F |
| Thermal Conductivity (W/mk) | 180.0 W/m ∙ ˚K at 20 C |
| Modulus of Elasticity | 17000 ksi |
1). the units are based upon US Customary. 2). the typical physical properties apply to age hardened products.
Sizes And Product Forms
Available Sizes
Custom Diameter & Sizes, Random Mill lengths
Available Products And Forms
Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars
Custom shapes are available upon request.
International Specification
| Rods/Bars/Square/Hex. | UNS.C31400, ASTM B140, CDA 314 |
|---|---|
| European Standards | CuZn9Pb2, HPb89-2, MS89Pb |
Unless otherwise specified, material will be produced to ASTM.
Abbreviations
- ASTM — American Society for Testing and Materials
Tempers And Mechanical Data
The detailed Mechanical Properties will be available on request from customers.
Frequently Asked Questions
Answers drawn from the ALB technical data for this page.
What is the chemical composition of C31400?
C31400 is supplied to the following nominal composition:
- Cu: 87.50-90.50%
- Pb: 1.30-2.50%
- Fe: 0.10% Max.
- Ni: 0.70% Max.
- Zn: Balance
What are the typical physical properties of C31400?
Typical values published by ALB for C31400:
- Specific Gravity: 8.83 g/cm3
- Coefficient of Thermal Expansion per °C: 18.40 x 10-6 /K (20-300°C)
- Electrical Conductivity (% IACS): 42.0% IACS @ 68 F
- Thermal Conductivity (W/mk): 180.0 W/m ∙ ˚K at 20 C
- Modulus of Elasticity: 17000 ksi
Which international specifications does C31400 meet?
- Rods/Bars/Square/Hex.: UNS.C31400, ASTM B140, CDA 314
- European Standards: CuZn9Pb2, HPb89-2, MS89Pb
Can you supply mechanical property data for C31400?
The detailed Mechanical Properties will be available on request from customers.
Which product forms and sizes are available?
Custom Diameter & Sizes, Random Mill lengths Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars Custom shapes are available upon request.
How do I request a quotation?
Email the grade, temper, dimensions and quantity to [email protected]. Unless otherwise specified, material is produced to ASTM.
Quote C31400 To Your Specification
Send grade, temper, dimensions and quantity. Custom shapes are available on request.