C464 Naval Brass "Lead Free"
Naval Brass C46400 is nominally composed of 60% copper, 39.2% zinc, and 0.8% tin. As is typical of brass alloys with the duplex alpha + beta structure, C46400 has good strength and rigidity. By substituting tin for an equal quantity of zinc, a high corrosion resistance to seawater is achieved. The addition of tin also gives the alloy an inherent resistance to dezincification, thereby further inhibiting the impingement by seawater at higher than normal temperatures. The alloy is also noted for its resistance to wear, fatigue, galling, and stress corrosion cracking.
Naval Brass C46400 is nominally composed of 60% copper, 39.2% zinc, and 0.8% tin. As is typical of brass alloys with the duplex alpha + beta structure, C46400 has good strength and rigidity. By substituting tin for an equal quantity of zinc, a high corrosion resistance to seawater is achieved. The addition of tin also gives the alloy an inherent resistance to dezincification, thereby further inhibiting the impingement by seawater at higher than normal temperatures. The alloy is also noted for its resistance to wear, fatigue, galling, and stress corrosion cracking.
Typical Uses for C46400 Naval Brass "Lead-Free":
BUILDERS HARDWARE: Lock Pins
ELECTRICAL: Precision Shipboard Equipment
FASTENERS: Rivets, Bolts, Nuts
INDUSTRIAL: Welding Rod, Condenser Plates, Structural Uses, Valve Stems, Balls, Heat Exchanger Tube, Aircraft Turn Buckle Barrels, Bearings, Dies, Pressure Vessels, Bearings, Bushings, Hub Cones
MARINE: Propeller Shafts, Marine Hardware, Decorative Fittings, Shafting, Propeller Shafts, Turnbuckles
ORDINANCE: Missile Components
OTHER: Baffle Plates and Flanges
PLUMBING: Fittings
- Chemical Composition
| CU | FE | PB | SN | ZN | |
| Min/Max | 59.0 - 62.0 | 0.1 | 0.2 | 0.5 - 1.0 | Rem |
| Nominals | 60.0000 | - | - | 0.7000 | 39.2000 |
- Fabrication
| JOINING TECHNIQUE | SUITABILITY |
| Brazing | Excellent |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Fair |
| Capacity for Being Hot Formed | Excellent |
| Coated Metal Arc Welding | Not Recommended |
| Forgeability Rating | 90 |
| Gas Sheilded Arc Welding | Fair |
| Machinability rating | 30 |
| Oxyacetylene Welding | Good |
| Seam Weld | Fair |
| Soldering | Excellent |
| Spot Weld | Good |
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