C18200 Chromium Copper
MIL-C-19311, UNS C18200
Farmers Copper LTD. supplies C18200 Chromium Copper in round bar and rod. Our particular specification is the military grade (MIL-C-19311) and is mainly used for parts in the electrical and industrial markets. It is excellent in being cold formed and good in being hot formed. Our dedicated sales staff can provide you information about our sizes and is ready to help meet your exact needs.
Farmers Copper Ltd. has been in the metal industry over 90 years, our long time commitment, dedication and service has proven to be our success. Now, four generations old, the Farmer family is proud to serve you and your company for your copper alloy and pure copper needs. Please contact us today, and let our knowledgeable staff assist you with your copper requirements. For emergency orders, call 409-765-9003.
C18200 Chromium Copper Applications
- Electrical
- Industrial
- Molds
Industries
Farmer’s Copper Ltd. extends its services throughout many industries. We provide the raw copper alloy materials in various standard shapes as well as custom cut copper alloys.
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Our C18200 Chromium Copper Inventory & Properties
Farmer’s diverse inventory of products and services offered provides our customers the largest and most extensive selection of alloys available, cut to precise specifications, and delivered with total quality control.
Chemical Properties
| Element | Cu (1,2) | Pb | Fe | Cr | Si |
| Min % | 0.6 | ||||
| Max % | Rem | 0.05 | 0.1 | 1.2 | 0.1 |
Physical Properties
| Melting Point – Liquidus ⁰F | 1967 | |
| Melting Point – Solidus ⁰F | 1958 | |
| Density lb/cu in. at 68⁰F | 0.321 | |
| Specific Gravity | 8.98 | |
| Electrical Conductivity % IACS at 68⁰F | 80 (1) | |
| Thermal Conductivity Btu/sq ft/ft hr/ ⁰F at 68⁰F | 187(2) | |
| Coefficient of Thermal Expansion 10-6 per ⁰F (68-212 ⁰F) | 9.8 | |
| Specific Heat Capacity Btu/lb/⁰F @ 68 ⁰F | 0.092 | |
| Modulus of Elasticity in Tension ksi | 17000 | |
| Modulus of Rigidity ksi | 7200 |
Fabrication Properties
| TECHNIQUE | SUITABILTY | |
| Soldering | Good | |
| Brazing | Good | |
| Oxyacetylene Welding | Not Recommended | |
| Gas Shielded Arc Welding | Good | |
| Coated Metal Arc Welding | Not Recommended | |
| Spot Weld | Not Recommended | |
| Seam Weld | Not Recommended | |
| Butt Weld | Fair | |
| Capacity for Being Cold Formed | Excellent | |
| Capacity for Being Hot Formed | Good | |
| Forgeability Rating | 80 | |
| Machinability Rating | 20 |
Mechanical Properties
| FORM | TEMPER | TENSILE STRENGTH | YS-0.5% EXT (KSI) | ELONGATION (%) | ROCKWELL (B) | TORSION MODULUS KSI | SECTION SIZE (IN) |
| Round Bar Rod | TH01 | 77 | 65 | 16 | 82 | 0.5 | |
| TH04 | 77 | 65 | 16 | 82 | 0.5 | ||
| TH04 | 86 | 77 | 14 | 0.156 | |||
| TF00 | 65 | 55 | 18 | 70 | 3 | ||
| TF00 | 72 | 65 | 18 | 80 | 1 | ||
| TF00 | 70 | 65 | 18 | 45 | 2 | ||
| TF00 | 70 | 55 | 21 | 40 | 0.5 | ||
| TF00 | 55 | 43 | 25 | 68 | 7.3 | 4 | |
| TB00 | 45 | 14 | 40 | 0.5 | |||
| TD04 | 57 | 56 | 11 | 65 | 0.5 | ||
| TD04 | 74 | 73 | 5 | 0.156 |
Our Commitment to Service
As a leading copper, brass, & bronze alloys supplier, Farmers Copper Ltd. attributes our success to serving our customers, through our service-minded employees and material readily available for prompt, accurate deliveries of copper, brass, bronze, stainless steel and other metal alloys.