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C48500 Naval Brass "High Leaded"
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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

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
Temper
Mechanical Properties
Physical Properties
Fabrication
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
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
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
Product Property US Customary Metric
Coefficient of Thermal Expansion 11.8 ÌÎ?̴ÌÁ10-6 per oF (68-572 F) 21.2 ÌÎ?̴ÌÁ 10 6? per ÌÎ?̴åÁC (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/ÌÎ?̴åÁF @ 68 F 377.1 J/kg ÌÎ?̴ÌÁ ÌÎ?̴åÁK at 293 K
Thermal Conductivity 67.0 Btu ÌÎ?̴ÌÁ ft/(hr ÌÎ?̴ÌÁ ft2 ÌÎ?̴ÌÁÌÎ?̴åÁF) @ 68 F 116.0 W/m ÌÎ?̴ÌÁ ÌÎ?̴åÁK at 20 C
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

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