Electrolytic Tough Pitch (ETP)
Spec Equivalents: CDA 110 ETP, ASTM B124, ASTM B152, ASTM B187, ASTM B188, ASTM B272
The electrolytic tough pitch copper is the copper with high thermal and electrical conductivity. The products manufactured using this copper possess good corrosion resistance and soldering ability. The inherited fabrication qualities of the copper allows it to bend, drilled, soldered, riveted and to be fit in to almost any design specifications. This variant of copper has excellent hot workability.
Applications:
-Electrical Industry
-Telecommunications Industry
-Architectural Industry
-Antimicrobial Applications
Specifications
| End Product | Specification |
| Bands, Projectile Rotating | MILITARY MIL-B-20292 |
| Bar | ASME SB133, ASTM B152, SAE J461, J463 |
| Bar, Bus | ASTM B187 |
| Bar, Forging | ASTM B124 |
| Bolts | ASTM F468 |
| Brazing Filler Metal | FEDERAL QQ-B-650 |
| Foil, Printed Circuits | ASTM B451 |
| For, Forging | ASTM B124 |
| Forgings, Die | ASTM B283 |
| Nuts | ASTM F467 |
| Pipe, Bus | ASTM B188 |
| Plate | AMS 4500, ASTM B152, SAE J461, J463 |
| Rod | ASME SB133, MILITARY MIL-C-12166, SAE J461, J463 |
| Rod, Bus | ASTM B187 |
| Screws | ASTM F468 |
| Shapes | SAE J461, J463 |
| Shapes, Bus | ASTM B187 |
| Shapes, Forging | ASTM B124 |
| Sheet | AMS 4500, ASTM B152, B694, SAE J463, J461 |
| Sheet, Building Construction | ASTM B370 |
| Sheet, Clad | ASTM B506 |
| Sheet, Lead Coated | ASTM B101 |
| Sheet, Printed Circuits | ASTM B451 |
| Strip | AMS 4500, ASTM B694, B152, SAE J463, J461 |
| Strip, Building Construction | ASTM B370 |
| Strip, Clad | ASTM B506 |
| Strip, Printed Circuits | ASTM B451 |
| Studs | ASTM F468 |
| Tube, Bus | ASTM B188 |
| Tube, Welded | ASTM B447 |
| Wire, Coated With Lead Alloy | ASTM B189 |
| Wire, Coated With Nickel | ASTM B355 |
| Wire, Coated With Silver | ASTM B298 |
| Wire, Coated With Tin | ASTM B246, B33 |
| Wire, Flat | AMS 4500, ASTM B272 |
| Wire, Hard Drawn | ASTM B1, FEDERAL QQ-W-343 |
| Wire, Medium-Hard Drawn | ASTM B2, FEDERAL QQ-W-343 |
| Wire, Metallizing | MILITARY MIL-W-6712 |
| Wire, Soft | ASTM B3, B738, B48, FEDERAL QQ-W-343, SAE J461, J463 |
| Wire, Stranded | ASTM B8, B496, B470, B286, B229, B226, B174, B173, B172, FEDERAL QQ-B-575 |
| Wire, Trolley | ASTM B47, B116 |
Chemical Composition:
| Cu | O | |
| Min/Max | 99.90 min | |
| Nominals | – | 0.04 |
Fabrication:
| Joining Technique | Suitability |
| Brazing | Good |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Excellent |
| Coated Metal Arc Welding | Not Recommended |
| Forgeability Rating | 65 |
| Gas Sheilded Arc Welding | Fair |
| Machinability rating | 20 |
| Oxyacetylene Welding | Not Recommended |
| Seam Weld | Not Recommended |
| Soldering | Excellent |
| Spot Weld | Not Recommended |
Physical Properties:
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 9.4 · 10 6? per °F (68-212 F) | 16.9 · 10 6? per °C (20-100 C) |
| Coefficient of Thermal Expansion | 9.6 · 10 6? per °F (68-392 F) | 17.3 · 10 6? per °C (20-200 C) |
| Coefficient of Thermal Expansion | 9.8 · 10 6? per °F (68-572 F) | 17.6 · 10 6? per °C (20-300 C) |
| Density | 0.322 lb/in3 @ 68 F | 8.91 gm/cm3 @ 20 C |
| Electrical Conductivity | 101%IACS @ 68 F | 0.591 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 10.3 ohms-cmil/ft @ 68 F | 1.71 microhm-cm @ 20 C |
| Melting Point Liquid US | 1981 F | 1083 C |
| Melting Point Solid US | 1949 F | 1065 C |
| Modulas of Elasticity in Tension | 17000 ksi | 117000 MPa |
| Modulas of Rigidity | 6400 ksi | 44130 MPa |
| Specific Gravity | 8.91 | 8.91 |
| Specific Heat Capacity | 0.092 Btu/lb/°F at 68 F | 393.5 J/kg · °K at 293 K |
| Thermal Conductivity | 226.0 Btu · ft/(hr · Ft2 · °F) at 68 F |
391.1W/m · °K at 20 C |
Sizes Available:
| HOLLOW RODS | Min Bore Size 20 mm and Max OD 100 mm |
| ROUND RODS | 8mm To 100 mm |
| HEX | 10mm To 60mm |
| SQUARE | 10mm To 60mm |
| FLAT | 10mm Min Thickness and max Width 120mm |
| BILLETS | Up to 200 mm |
| INGOTS | As per Specification |
