C31400

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SPECIFICATION CROSS-REFERENCE CHART

✔ STANDARD-STOCKED PRODUCT

Wrought

C31400, or leaded commercial bronze, is a free machining brass with excellent electrical and thermal conductivity. The alloy is resistant to corrosion and contains 2.00% lead to impart free-cutting characteristics.

Info

Product Description: Leaded Commercial Bronze
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: door knobs
Electrical: electrical plug type connectors, connectors for wire and cable
Fasteners: nuts, screws
Industrial: pickling crates, pickling fixtures, pickling racks, screw machine parts

Similar or Equivalent Specification

CDA ASTM Asarcon SAE AMS Federal Military Other
C31400 B140
B140M
        MIL-V-18436  

Chemical Composition

Cu% Pb% Zn% Fe% Ni%
Chemical Composition according to ASTM B140/B140M-12(2017)

Note: Cu + Sum of Named Elements, 99.6% min. Single values represent maximums.
87.50-
90.50
1.30-
2.50
 
Rem.
 
0.10
 
0.70

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/cu in at 68° F)
C31400 80 0.319

Mechanical Properties

Mechanical Properties according to ASTM B140/B140M-12(2017)

C31400

H02 Half-Hard

SIZE RANGE: 1/2" DIAMETER AND UNDER
Tensile Strength (min) Yield Strength (at .5% extension under load min) Elongation (in 2 in. or 50 mm min) Brinell Hardness Remarks
Ksi MPa Ksi MPa % typical BHN  
50 345 30 205 7 61  
SIZE RANGE: OVER 1/2" DIAMETER TO 1" INCLUSIVE
Tensile Strength (min) Yield Strength (at .5% extension under load min) Elongation (in 2 in. or 50 mm min) Brinell Hardness Remarks
Ksi MPa Ksi MPa % typical BHN  
45 310 27 185 10 61  
SIZE RANGE: OVER 1"
Tensile Strength (min) Yield Strength (at .5% extension under load min) Elongation (in 2 in. or 50 mm min) Brinell Hardness Remarks
Ksi MPa Ksi MPa % typical BHN  
40 275 25 170 12 58  

C31400

H04 Hard

SIZE RANGE: 2" DIAMETER AND UNDER
Tensile Strength (min) Yield Strength (at .5% extension under load min) Elongation (in 2 in. or 50 mm min, %) Brinell Hardness (min) Remarks
Ksi MPa Ksi MPa % typical BHN  
53 365 40 275 6 65  

Physical Properties

Physical Properties provided by CDA

  US Customary Metric
Melting Point - Liquidus 1900° F 1038° C
Melting Point - Solidus 1850° F 1010° C
Density 0.319 lb/in3 at 68° F 8.83 gm/cm3 at 20° C
Specific Gravity 8.83 8.83
Electrical Conductivity 42% IACS at 68° F 0.246 MegaSiemens/cm at 20° C
Thermal Conductivity 104.0 Btu · ft/(hr · ft2· °F) at 68° F 180.0 W/m at 20° C
Coefficient of Thermal Expansion 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 293° C
Modulus of Elasticity in Tension 17000 ksi 117210 MPa
Modulus of Rigidity 6400 ksi 44130 MPa

Fabrication Properties

Fabrication Properties provided by CDA
Joining 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

Thermal Properties

Thermal Properties provided by CDA
Treatment Temp./Time - US Temp./Time - SI
Stress Temperature    
Solution Minimum    
Solution Maximum    
Solution Time    
Solution Medium    
Precipitation Value    
Precipitation Time    
Precipitation Medium    
Annealing Minimum 800 427
Annealing Maximum 1200 649
Annealing Time    
Hot Works Minimum    
Hot Works Maximum    

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