ASTM B411 Copper Alloy Bar
- UNS C64700
- Round: Dia. 2.4 – 50mm
- Hexagonal & Octagonal: 3 – 50mm
- Square: 5-38mm
- Rectangular: T: 5-38mm x W: 5-65mm
Features
ASTM B411/B411M Copper-Nickel-Silicon Alloy Rod and Bar
Chemical Composition (wt.%)
| Element | Composition % |
|---|---|
| Nickel (incl. Cobalt) | 1.6–2.2 |
| Silicon | 0.40–0.8 |
| Lead (max) | 0.09 |
| Iron (max) | 0.10 |
| Zinc (max) | 0.50 |
| Copper (incl. Silver) | Remainder |
Mechanical Properties for Material in the TF00 (Precipitation-Hardened (AT) Condition
| Form | Diameter or Distance Between Parallel Surfaces | Tensile Strength (ksi / MPa) | Yield Strength at 0.5 % Extension Under Load (ksi / MPa) | Elongation in 4D (min %) |
| Rod: Round, Hexagonal and Octagonal | 3⁄32 to 11⁄2 in. (2.4 to 38 mm) incl | 90 / 620 | 75 / 515 | 8 |
| Over 11⁄2 to 2 in. (Over 38 to 50 mm) incl | 80 / 550 | 70 / 485 | 8 | |
| Bar: Square | Over 0.188 to 1 in. (5 to 25 mm) incl | 90 / 620 | 75 / 515 | 8 |
| Bar: Rectangular | Over 0.188 to 11⁄2 in. (Over 5 to 38 mm) thick and up to 21⁄2 in. (up to 65 mm) wide incl | 80 / 550 | 70 / 485 | 8 |
Precipitation-Hardening Heat Treatment
| Forms | Diameter or Distance Between Parallel Surfaces | Temperature (°F / °C) | Time at Temperature (min) |
| Under 0.050 in. (Under 1.3 mm) | – | 800 / 427 | 90 |
| All 0.050 to 1.000 in. (1.3 to 25 mm) incl | – | 850 / 454 | 90 |
| Over 1.000 in. (Over 25 mm) | – | 850 / 454 | 120 |
Technical Specifications
| Specification | Value |
| Standard | ASTM B411 Copper Alloy Bar |
| Grade | UNS C64700 |
| Corrosion Resistance | Excellent |
| Type of Bars | Hot Rolled, Cold Finished |
| Shape of Bars | Round, Hexagonal and Octagonal, Square and Rectangular |
| Density | 8.9g/cm³ |
| Diameter | Round: Dia. 2.4 – 50mm; Hexagonal & Octagonal: 3 – 50mm; Square: 5-38mm; Rectangular: T: 5-38mm x W: 5-65mm |
| Length | 1000 – 6000mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Analysis, Tensile Test, UT/ET |
Packing
Small diameter packed in plywood box; large diameter packed on plywood pallets.
Application
Components and Fasteners: Used for manufacturing critical aerospace components and fasteners that require high strength and resistance to corrosion.
Electrical Connectors and Contacts: Its good electrical conductivity makes it suitable for electrical connectors and contacts in aerospace applications.
Connectors and Terminals: The alloy’s excellent electrical conductivity and corrosion resistance make it ideal for electrical connectors and terminals in automotive applications.
Bushings and Bearings: Its wear resistance and strength are beneficial for manufacturing bushings and bearings used in high-performance automotive systems.
Marine Hardware: Used for manufacturing various marine hardware components, including propeller shafts, because of its corrosion resistance in saltwater environments.
Shipbuilding Components: The alloy’s strength and corrosion resistance make it suitable for various components in shipbuilding, including fittings and fastenings.
Connectors: Due to its excellent electrical conductivity, UNS C64700 is used in making connectors that require high strength and corrosion resistance.
Switchgear: Utilized in switchgear components for its ability to withstand high temperatures and corrosive environments.
Valves and Pumps: The alloy’s strength and corrosion resistance make it a good choice for valves and pumps, especially those used in corrosive environments.
Springs and Contacts: Its high strength, electrical conductivity, and formability make it suitable for springs and electrical contacts in various applications.
Injection Molding: Used for injection mold components that require high strength, good thermal conductivity, and resistance to wear.
Ammunition Casings: The alloy’s strength and corrosion resistance make it suitable for manufacturing certain components of ammunition casings.
Naval Components: Used in naval ships and submarines for components that require high strength and resistance to saltwater corrosion.
