Copper
Copper C18400
Annealing Procedure
The annealing temperature for this alloy is unknown.
Applications
Used for resistance welding equipment components: tips, clamps, wheels; other electrical and mechanical power transmission devices, circuit breaker parts, and high-strength fasteners for elevated-temperature service.
Cold Workability
The capacity for cold working this alloy is rated as "excellent".
Forgeability
The hot forgeability rating of this alloy is 80. (Forging brass=100). The recommended hot working temperature for this alloy is between 1400-1600 F.
Hot Workability
This alloy's capacity for being hot formed is rated as "good".
Machinability
The machinability rating of this alloy is 20. (Where Alloy 360 FC Brass is 100).
Principle Design Features
High Copper Alloy, Chromium Copper. Moderately high elevated strength, conductivity 80% IACS.
Weldability
Soldering is rated as "good", brazing is rated as "good", oxyacetylene welding is "not recommended", gas shielded arc welding is rated as "good", coated metal arc welding is "not recommended", spot welding is "not recommended", seam welding is "not recommended", and butt welding is rated as "fair".
Known Forms
Coil
Disc
Flat Bar
Foil
Hollow Bar
Pipe
Plate
Ring
Rod
Round Bar
Round Tube
Sheet
Square Bar
Strip
Additional Data
Specifications
C-19311,J461,J463,C18400Chemical Elements
| Arsenic | 0.005 max |
| Chromium | 0.4 - 1.2 |
| Iron | 0.15 max |
| Lithium | 0.05 max |
| Phosphorus | 0.05 max |
| Remainder Total | Cu, including Ag, + sum of named elements |
| Silicon | 0.1 max |
| Zinc | 0.7 max |
Physical Properties
Density: 0.321lb/in³
Electrical Resistivity: 13µΩ·cm
Melting Point: 1958°F
Mechanical Properties
Modulus of Elasticity – Tension: 17MSI
Thermal Expansion: 9.8µin/in·°F