C51000

Lead-Free Replacement

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SPECIFICATION CROSS-REFERENCE CHART

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Wrought

Phosphor bronze alloys such as C51000, also known as C510, consist of copper with 0.50–11.00% of tin and 0.01–0.35% phosphorus. The tin increases the corrosion resistance and strength of the alloy. The phosphorus increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain.

Info

Product Description: Phosphor Bronze 5% A
Tempers: H04 Hard, H08 Spring
Solids: 3/8" to 2 1/2" O.D.
Hex: 3/8" to 2" O.D.
Rectangles: Consult Mill
Standard Lengths: 144"

Typical Uses

Architecture: bridge bearing plates
Electrical: electrical connectors, electrical flexing contact blades, electromechanical spring components, electronic and precision instrument parts, electronic connectors, fuse clips, resistance wire, switch parts, wire brushes
Fasteners: cotter pins, fasteners, lock washers
Industrial: beater bar, bellows, bourdon tubes, chemical hardware, clutch disks, diaphragms, perforated sheets, pressure responsive elements, sleeve bushings, springs, textile machinery, truss wire, welding rods

Similar or Equivalent Specification

CDA ASTM Asarcon SAE AMS Federal Military Other
C51000 B139
B139M
  J461
J463
4625      

Chemical Composition

Cu% Pb% Sn% Zn% Fe% P%
Chemical Composition according to ASTM B139/B139M-12(2017)

Note: Cu + Sum of Named Elements, 99.5% min. Single values represent maximums.
 
Rem.
 
0.05
4.20-
5.80
 
0.30
 
0.10
0.03-
0.35

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68 °F)
C51000 20 0.320

Mechanical Properties

Mechanical Properties according to ASTM B139/B139M-12(2017)

C51000

H04 Hard

SIZE RANGE: 1/4" ROUND AND HEXAGONAL TO 1/2" INCLUSIVE
Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Rockwell "B" Hardness Remarks
ksi MPa ksi MPa % typical HRB
70 485     13 87
SIZE RANGE: OVER 1/2" ROUND AND HEXAGONAL TO 1" INCLUSIVE
Tensile Strength, min Yield Strength, at .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     15 87
SIZE RANGE: 0VER 1" ROUND AND HEXAGONAL
Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Rockwell "B" Hardness Remarks
ksi MPa ksi MPa % typical HRB
55 380     18 87

C51000

H08 Spring Temper

SIZE RANGE: 3/8" TO 1/2" ROUND
Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Rockwell "B" Hardness Remarks
ksi MPa ksi MPa % typical HRB
90 620     9 95

Physical Properties

Physical Properties provided by CDA
*Determined on an alloy containing 5% tin and .2% phosphorus. This value will vary with the composition.
  US Customary Metric
Melting Point - Liquidus 1920 °F 1049 °C
Melting Point - Solidus 1750 °F 954 °C
Density 0.32 lb/in3 at 68 °F 8.86 gm/cm3 at 20 °C
Specific Gravity 8.86 8.86
Electrical Conductivity* 15% IACS at 68 °F 0.088 MegaSiemens/cm at 20 °C
Thermal Conductivity 40 Btu/sq ft/ft hr/°F at 68 °F 69.2 W/m at 20 °C
Coefficient of Thermal Expansion 68-572 9.9 ·10-6 per °F (68-572 °F) 17.1 ·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 16000 ksi 110310 MPa
Modulus of Rigidity 6000 ksi 41370 MPa

Fabrication Properties

Fabrication Properties provided by CDA
Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Fair
Spot Weld Good
Seam Weld Fair
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
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 900 483
Annealing Maximum 1250 677
Annealing Time    
Hot Works Minimum    
Hot Works Maximum    

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