C48500 Naval Brass "High Leaded"
ASTM B21
High ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.
Typical Uses for C48500 Naval Brass "High Leaded"
- Fasteners: Fastners
- Industrial: Valve Stems, Light Bearings, Gears, Screw Machine Parts
- Marine: Marine Hardware, Seawater Valve Stems
Product Specifications
| End Product | Specification |
| Bar | ASTM B21, FEDERAL QQ-B-639 |
| Bar, Forging | ASTM B124 |
| Forgins, Die | ASTM B283 |
| Plate | FEDERAL QQ-B-639 |
| Rod | ASTM B21 |
| Rod, Forging | ASTM B124 |
| Shapes | ASTM B21 |
| Shapes, Forging | ASTM B124 |
| Sheet | FEDERAL QQ-B-639 |
| Strip | FEDERAL QQ-B-639 |
Chemical Composition
| Cu | Fe | Pb | Sn | Zn | |
| Min/Max | 59.0 - 62.0 | 0.1 | 1.3 - 2.2 | 0.5 - 1.0 | Rem |
| Nominals | 60.5000 | - | 1.8000 | 0.7000 | 37.5000 |
Temper
| Product Type | Temper Type |
| Bar | ASTM B21, FEDERAL QQ-B-639 |
| Bar, Forging | ASTM B124 |
| Forgins, Die | ASTM B283 |
| Plate | FEDERAL QQ-B-639 |
| Rod | ASTM B21 |
| Rod, Forging | ASTM B124 |
| Shapes | ASTM B21 |
| Shapes, Forging | ASTM B124 |
| Sheet | FEDERAL QQ-B-639 |
| Strip | FEDERAL QQ-B-639 |
Mechanical Properties
| Temper | Sect. Size | Cold Work | Type Min | Temp | Tensile Strength | YS 0.05% UL |
YS 0.02% Offset |
YS 0.005% Offset |
Elong. | RH B |
RH C |
RH F |
RH 30T |
VH 500 |
BH 500 |
BH 3000 |
Shear Strgth |
Fatigue Strgth |
Izod Impact Strgth |
| - | in. | % | - | F | ksi | ksi | ksi | ksi | % | B | C | F | 30T | 500 | 500 | 3000 | ksi | ksi | ft-lb |
| - | mm. | - | - | C | MPa | MPa | MPa | MPa | - | - | - | - | - | - | - | - | MPa | MPa | J |
| O60 | 1 | 68 | 57 | 25 | - | - | - | - | - | - | - | - | - | - | 36 | - | |||
| O60 | 25.4 | 0 | TYP | 20 | 393 | 172 | - | - | 40 | 55 | - | - | - | - | - | - | 248 | - | 0 |
| H01 | 1 | 68 | 69 | 46 | - | - | - | - | - | - | - | - | - | - | 39 | - | |||
| H01 | 25.4 | 8 | TYP | 20 | 476 | 317 | - | - | 20 | 78 | - | - | - | - | - | - | 269 | - | 0 |
| H02 | 1 | 68 | 75 | 53 | - | - | - | - | - | - | - | - | - | - | 40 | - | |||
| H02 | 25.4 | 20 | TYP | 20 | 517 | 365 | - | - | 15 | 82 | - | - | - | - | - | - | 276 | - | 0 |
Physical Properties
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 11.8 · 10-6 per oF (68-572 F) | 21.2 · 10-6 per oC (20-300 C) |
| Density | 0.305 lb/in3 @ 68 F | 8.44 gm/cm3 @ 20 C |
| Electrical Conductivity | 26 %IACS @ 68 F | 0.152 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 39.9 ohms-cmil/ft @ 68 F | 6.63 microhm-cm @ 20 C |
| Melting Point Liquid US | 1650 F | 899 C |
| Melting Point Solid US | 1630 F | 888 C |
| Modulas of Elasticity in Tension | 15000 ksi | 103400 MPa |
| Modulas of Rigidity | 5600 ksi | 38610 MPa |
| Specific Gravity | 8.44 | 8.44 |
| Specific Heat Capacity | 0.09 Btu/lb/oF @ 68 F | 377.1 J/kg · oK at 293 K |
| Thermal Conductivity | 67.0 Btu · ft/(hr · ft2 · oF) @ 68 F | 116.0 W/m · oK at 20 C |
Fabrication
| Joining Technique | Suitability |
| Brazing | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Poor |
| Capacity for Being Hot Formed | Good |
| Coated Metal Arc Welding | Not Recommended |
| Forgeability Rating | 90 |
| Gas Sheilded Arc Welding | Not Recommended |
| Machinability rating | 70 |
| Oxyacetylene Welding | Not Recommended |
| Seam Weld | Not Recommended |
| Soldering | Excellent |
| Spot Weld | Not Recommended |
Our Services
40+ years of experience
Aviva Metals Houston warehouse operation is a AS9120B, and AS9100D in our Ohio foundry, based on ISO 9001:2015. We are now also offering our complete range of brass, bronze and copper alloys in precision machined or milled parts, in full accordance with your drawings. Aviva Metals creates custom precision bearings and bushings, flanges, washers, double flange bearings, full half bearings, spacers and special machined parts that can be shipped on a global basis and in full accordance with most international standards.
