C46400 Naval Brass, Uninhibited

The following data is provided for informational purposes only. It was provided with permission by the Copper Development Association at www.copper.org.

Last Update: Jan 10, 2007

Chemical Composition (%max., unless shown as range or min.)

Cu Fe Pb Sn Zn
Min./Max. 59.0–62.0 .10 .20 .50–1.0 Rem.
Nominal 60.0 .7 39.2

Note: Cu + Sum of Named Elements, 99.6% min.

Applicable Specifications

Product Specification
Bar AMS 4611, 4612
ASTM B21
FEDERAL QQ–B–639
SAE J463, J461
Bar, Forging ASTM B124
Bolts ASTM F468
Forgings, Die ASTM B283
Nuts ASTM F467
Plate FEDERAL QQ–B–639
Plate, Clad ASTM B432
Plate, Condenser Tube ASME SB171
ASTM B171
Rod AMS 4611, 4612
ASTM B21
SAE J463, J461
Rod, Forging ASTM B124
Screws ASTM F468
Shapes ASTM B21
Shapes, Forging ASTM B124
Sheet FEDERAL QQ–B–639
Strip FEDERAL QQ–B–639
SAE J461, J463
Studs ASTM F468
Wire, Metallizing MILITARY MIL–W–6712

Common Fabrication Processes
Blanking, Drawing, Forming and Bending, Heading and Upsetting, Hot Forging and Pressing, Hot Heading and Upsetting, Shearing

Fabrication Properties

Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Fair
Butt Weld Good
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Excellent
Forgeability Rating 90
Machinability Rating 30

Physical Properties

US Customary Metric
Melting Point – Liquidus 1650 F 899 C
Melting Point – Solidus 1630 F 888 C
Density 0.304 lb/in3 at 68 F 8.41 gm/cm3 @ 20 C
Specific Gravity 8.41 8.41
Electrical Resistivity 39.9 ohms–cmil/ft @ 68 F 6.63 microhm–cm @ 20 C
Electrical Conductivity 26 %IACS @ 68 F 0.152 MegaSiemens/cm @ 20 C
Thermal Conductivity 67.0 Btu · ft/(hr · ft2·oF)at 68F 116.0 W/m · oK at 20 C
Coefficient of Thermal Expansion 11.8 ·10–6 per oF (68–572 F) 21.2 ·10–6 per oC (20–300 C)
Specific Heat Capacity 0.09 Btu/lb/oF at 68 F 377.1 J/kg · oK at 293 K
Modulas of Elasticity in Tension 15000 ksi 103400 MPa
Modulus of Rigidity 5600 ksi 38610 MPa

Tempers Most Commonly Used

Flat Products
BAR, DRAWN H01, H02, O50, O60
BAR, ROLLED H01, O50, O60
PLATE H02, M20, O60
STRIP, ROLLED H01, O50

Typical Uses

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 Turnbuckle Barrels, Bearings, Dies, Golf Ball Production, Pressure Vessels, Bearings, Bushings, Hub Cones

Marine
Propeller Shafts, Marine Hardware, Decorative Fittings, Shafting, Propeller Shafts, Turn buckles

Ordnance
Missile Components

Other
Baffle Plates and Flanges

Plumbing
Fittings