Producer of custom machined parts, specializing in bronze and other popular alloys for your manufacturing needs.
COPPER-BASED ALLOYS
C31600
CAST C31600
C31600, or leaded commercial bronze (nickel bearing), combines the natural corrosion resistance and machinability of C31400 with a higher tensile and yield strength resulting from the controlled addition of nickel. Alloy C316 possesses cold workability as well as resistance to stress corrosion cracking.
INFORMATION
PRODUCT DESCRIPTION: Leaded Commercial Bronze (nickle-bearing)
TEMPERS: H02 Half Hard, H04 Hard
SOLIDS: 3/8” to 2” O.D.
HEX: 3/8" to 2" O.D.
RECTANGLES: Consult Mill
STANDARD LENGTHS: 144”
TYPICAL USES
BUILDERS HARDWARE: hardware
ELECTRICAL: connectors
FASTENERS: fasteners, nuts, screws
INDUSTRIAL: screw machine parts
SIMILAR OR EQUIVALENT SPECIFICATION
CDA
ASTM
SAE
AMS
Federal
Military
Other
C31600
B140 B140M
MIL-V-18436
CHEMICAL COMPOSITION
Cu%
Pb%
Zn%
Fe%
P%
Ni%
87.50-90.50
1.30-2.50
Rem.
0.04-0.10
0.70-1.20
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C31600
80
0.320
MECHANICAL PROPERTIES
Mechanical Properties according to ASTM B140/B140M-12(2017), H02 Half Hard

SIZE RANGE: 1/2" DIAMETER AND UNDER
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 2 in. or 50 mm min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
50
345
30
205
7
61

SIZE RANGE: OVER 1/2" DIAMETER TO 1" INCLUSIVE
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 2 in. or 50 mm min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
45
310
27
185
10
61

SIZE RANGE: OVER 1" DIAMETER
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 2 in. or 50 mm min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
40
275
25
170
12
58


H04 Hard
SIZE RANGE: 2" DIAMETER AND UNDER
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 2 in. or 50 mm min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
60
415
50
345
6
72
PHYSICAL PROPERTIES
US Customary
Metric
Melting Point - Liquidus
1900 °F
1038 °C
Melting Point - Solidus
1850 °F
1010 °C
Density
0.32 lb/in3 at 68 °F
8.86 gm/cm3 at 20 °C
Specific Gravity
8.86
8.86
Electrical Conductivity
32% IACS at 68 °F
0.187 MegaSiemens/cm at 20 °C
Thermal Conductivity
81 Btu/sq ft/ft hr/°F at 68 °F
140.2 W/m at 20 °C
Coefficient of Thermal Expansion 68-572

10.2 · 10-6 per °F (68-572 °F)

17.6 · 10-6 per °C (20-300 °C)

Specific Heat Capacity
0.09 Btu/lb/°F at 68 °F
377.1 J/kg at 20 °C
Modulus of Elastic in Tension
17000 ksi
117212 MPa
FABRICATION PROPERTIES
Technique
Suitability
Soldering
Excellent
Brazing
Good
Oxyacetylene Welding
Not Recommended
Gas Shielded Arc Welding
Not Recommended
Coated Metal Arc Welding
Not Recommended
Spot Weld
Not Recommended
Seam Weld
Not Recommended
Butt Weld
Fair
Capacity for Being Cold Worked
Good
Capacity for Being Hot Formed
Poor
Machinability Rating
80
THERMAL PROPERTIES
Treatment
Minimum*
Maximum*
Annealing
800
1200


SPEC SHEET


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