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C31600 Nickel Leaded Commercial Bronze (CDA 316)
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C31600 Nickel Leaded Commercial Bronze (CDA 316)

CDA 316, ASTM B140

Nickel Bearing C31600 is composed of approximately 89% copper, 8% zinc, and 2% lead, but also contains 1% nickel. This alloy combines the natural corrosion resistance and machinability of C31400 with a higher tensile and yield strength resulting from the controlled addition of nickel. The relatively low zinc content provides excellent corrosion resistance in potable water along with a pleasing golden color that matches C22000 hardware. It also possesses a particular resistance to stress corrosion cracking. It is an alloy suitable for outdoor use where higher strength is required.

Typical Uses for C31600 Nickel Leaded Commercial Bronze:

BUILDERS HARDWARE: Hardware

ELECTRICAL: Connectors

FASTENERS: Fasteners, Nuts, Screws

INDUSTRIAL: Screw Machine Parts

Sizes Available From NBM

SOLID BAR: 3/16" - 3 1/2" diameter

HEX BAR: 3/8" - 2" across flats

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Chemical Composition
Temper
Mechanical Properties
Physical Properties
Fabrication
Specifications
Cu Fe Pb Ni P Zn
Min/Max 87.5 - 90.5 0.1 1.3 - 2.5 0.7 - 1.2 0.04 - 0.1 Rem
Nominals 89.0000 - 1.9000 1.0000 0.7000 8.1000
Product Type Temper Type
Bar ASTM B140
Rod ASTM B140
Shapes ASTM B140
Valves MILITARY MIL-V-18436
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
BAR
H04 0.25 68 63 56 - - - - - - - - - - - -
H04 6.35 0 TYP 20 434 386 - - 12 70 - - - - - - - - 0
ROD
H04 1 68 65 57 - - - - - - - - - - 39 -
H04 25.4 38 TYP 20 448 393 - - 15 70 - - - - - - 269 - 0
H04 0.5 68 67 59 - - - - - - - - - - 40 -
H04 12.7 38 TYP 20 462 407 - - 13 72 - - - - - - 276 - 0
OS050 1 68 37 12 - - - - - - - - - - 24 -
OS050 25.4 0 TYP 20 255 83 - - 45 - - 55 - - - - 165 - 0
Product Property US Customary Metric
Coefficient of Thermal Expansion 10.2 . 10-6 per oF (68-572 F) 18.4 . 10 6? per å¡C (20-300 C)
Density 0.32 lb/in3 @ 68 F 8.86 gm/cm3 @ 20 C
Electrical Conductivity 32 %IACS @ 68 F 0.187 MegaSiemens/cm @ 20 C
Electrical Resistivity 32.4 ohms-cmil/ft @ 68 F 5.39 microhm-cm @ 20 C
Melting Point Liquid US 1900 F 1038 C
Melting Point Solid US 1850 F 1010 C
Modulas of Elasticity in Tension 17000 ksi 117000 MPa
Specific Gravity 8.86 8.86
Specific Heat Capacity 0.09 Btu/lb/å¡F @ 68 F 377.1 J/kg . å¡K at 293 K
Thermal Conductivity 81.0 Btu . ft/(hr . ft2 . å¡F) @ 68 F 140.2 W/m . å¡K at 20 C
Joining Technique Suitability
Brazing Good
Butt Weld Fair
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Poor
Coated Metal Arc Welding Not Recommended
Gas Sheilded Arc Welding Not Recommended
Machinability rating 80
Oxyacetylene Welding Not Recommended
Seam Weld Not Recommended
Soldering Excellent
Spot Weld Not Recommended
End Product Specification
Bar ASTM B140
Rod ASTM B140
Shapes ASTM B140
Valves MILITARY MIL-V-18436

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