Typical Uses for C26000 Cartridge Brass "70/30"
Architecture: Grillwork
Automotive: Odometer Contacts, Heater Cores, Thermostats, Electrical Connectors, Radiator Cores, Radiator Tube, Radiator Tanks, Tanks
Builders Hardware: Odometer Contacts, Heater Cores, Thermostats, Electrical Connectors, Radiator Cores, Radiator Tube, Radiator Tanks, Tanks
Consumer: Snaps, Planters, Fireplace Screens, Etched Articles, Bird Cages, Coinage, Chain Links, Pen/Pencil Inserts and Clips, Syringe Parts, Watch Parts, Costume Jewelry, Buttons, Shells - Electrical Sockets, Lamps
Electrical: Terminal Connectors, Flashlight Shells, Lamp Fixtures, Reflectors, Screw Shells
Fasteners: Pins, Rivets, Fasteners, Grommets, Eyelets, Screws
Industria: Air Pressure Conveyer Systems, Sound Proofing Equipment, Springs, Chain, Bead Chain, Tubing for Instruments and Machines, Heat Exchangers, Pump Cylinders, Wire Screens, Pumps, Liners, Power Cylinders
Ordinance: Ammunition Cartridge Cases, Mechanical Housings for Lighters, Shells - Mechanical Housings for Ammunition, Ammunition
Plumbing: Fittings, Bathroom Fixtures, Plumbing Accessories, Faucet Escutcheons, Traps, Plumbing Brass Goods
Other: Stencils, Washers
Product Specifications
| End Product | Specification |
| Bar | ASTM B36, B19, SAE J463, J461 |
| Brazing Filler Metal | FEDERAL QQ-B-650 |
| Cups, Cartridge Case | ASTM B129, MILITARY MIL-C-10375, |
| Disk | ASTM B19 |
| Plate | AMS 4507, 4505, ASTM B19, B36 |
| Rod | SAE J463, J461 |
| Sheet | AMS 4507, 5408, 4505, ASTM B19, B36, SAE J463, J461 |
| Shim Stock, Laminated | MILITARY MIL-S-22499 |
| Strip | AMS 4507, 4505, ASTM B36, B569, B19, B888, SAE J463, J461 |
| Tube, Seamless | ASTM B135, FEDERAL WW-T-791, MILITARY MIL-T-20219, SAE J463, J461 |
| Tube, Welded | ASTM B587, B587 |
| Wire | ASTM B134, SAE J463, J461 |
Chemical Composition
| Cu | Fe | Pb | Zn | |
| Min/Max | 68.5 - 71.5 | 0.05 | 0.07 | Rem |
| Nominals | 70.0000 | - | - | 30.0000 |
Temper
| Product Type | Temper Type |
| BAR, ROLLED | H02, OS070, OS100 |
| SHEET | H01, H02, OS035, OS050, OS070 |
| STRIP, ROLLED | H01, H02, H04, H06, H08, H10, OS015, OS025, OS035, OS050, OS070, OS100 |
| WIRE, DRAWN | H02, OS050 |
| WIRE, ROLLED | H02, H04, H06, OS035, OS050, OS070, OS100 |
| SHAPES | M30 |
| TUBE | H58, H80, OS025, OS050 |
| WIRE | H00, H01, H06, H08, OS015, OS025, OS035, OS050 |
Physical Properties
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 11.1 · 10-6 per oF (68-572 ÌÎ?̴åÁF) | 20.0 · 10-6 per oC (20-300 C) |
| Density | 0.308 lb/in3 @ 68 F | 8.53 gm/cm3 @ 20 C |
| Electrical Conductivity | 28 %IACS @ 68 F | 0.164 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 37.0 ohms-cmil/ft @ 68 F | 6.15 microhm-cm @ 20 C |
| Melting Point Liquid US | 1750 F | 954 C |
| Melting Point Solid US | 1680 F | 916 C |
| Modulas of Elasticity in Tension | 16000 ksi | 110000 MPa |
| Modulas of Rigidity | 6000 ksi | 41370 MPa |
| Specific Gravity | 8.53 | 8.53 |
| Specific Heat Capacity | 0.09 Btu/lb/oF @ 68 F | 377.1 J/kg · oK at 293 K |
| Thermal Conductivity | 70.0 Btu · ft/(hr · ft2 · oF) @ 68 F | 121.2 W/m · oK at 20 C |
Fabrication
| Joining Technique | Suitability |
| Brazing | Excellent |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Gas Sheilded Arc Welding | Good |
| Machinability rating | 30 |
| Oxyacetylene Welding | Good |
| Seam Weld | Not Recommended |
| Soldering | Excellent |
| Spot Weld | Fair |
Our factory
Our factory specializes in the production and manufacturing of high-quality copper products. We operate a comprehensive, end-to-end production line equipped with advanced continuous casting and rolling mills, precision drawing machines, high-speed rolling mills, and automated heat treatment systems. We professionally produce a wide range of copper tubes, plates, bars, wires, and foils. A strict quality inspection system is implemented throughout the entire process, from raw material intake to finished product delivery. Supported by precision instruments such as spectrometers, metallographic microscopes, tensile testing machines, eddy current flaw detectors, and laser dimension gauges, we ensure that our products fully comply with international and domestic standards-including ASTM, EN, JIS, and GB-in terms of chemical composition, mechanical properties, dimensional accuracy, and surface quality. We are committed to providing global customers with stable, reliable, and fully-specified copper material solutions.
copper product packaging
Our products are packaged using professional, customized industrial packaging solutions to ensure they remain intact during long-distance transportation and multiple handlings. For long products such as copper tubes and bars, we use sturdy waterproof wooden crates or metal-frame boxes for secure fixing and protection. Copper plates and foils are individually wrapped with anti-rust paper, then packed into steel-edged boxes or on pallets with reinforced hard corners. Copper wires are wound with moisture-proof film and neatly coiled onto custom-designed reels or placed in wooden cases. All packaging is clearly marked according to customer requirements with shipping marks, specifications, batch numbers, and handling symbols. Desiccants can also be placed inside the packages when needed, providing complete protection against rust, moisture, and impact throughout the entire journey from production to the destination port.
