70/30 Lead Free Brass Wire
70/30 Lead Free Brass Wire – ASTM B36 (Bar, Sheet, and Plate), ASTM B135 (Tubing)
Has the highest ductility in the yellow brass series. Easily machined but is more often cold formed.
Applications :
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
Equivalent Specifications:
| Specifications | Designation |
| ISO | CuZn30 |
| Europen | CuZn30 |
| BS | CZ 106 |
| JIS | C 2600 |
| Russian | L70 |
Chemical Composition:
| Cu | Fe | Pb | Zn | |
| Min/Max | 68.5 – 71.5 | 0.05 | 0.07 | Rem |
| Nominals | 70.0000 | – | – | 30.0000 |
Specifications
| 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 |
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 |
Physical Properties
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 11.1 ·10-6 per °F (68-572 °F) | 20.0 · 10 6? per °C (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/°F @ 68 F | 377.1 J/kg · °K at 293 K |
| Thermal Conductivity | 70.0 Btu · ft/(hr · ft2 ·°F) @ 68 F | 121.2 W/m · °K at 20 C |
Sizes Available
| WIRE | 1mm TO 8 mm |
| HOLLOW RODS | Min Bore Size 20 mm and Max OD 100 mm |
| ROUND RODS | 6mm To 130 mm |
| HEX | 5mm To 60mm |
| SQUARE | 4mm To 60mm |
| FLAT | 5mm Min Thickness and max Width 120mm |
| PROFILES / SECTIONS | AS per Customer Drawing |
| BILLETS | Up to 200mm |
| INGOTS | AS per Specification |
