C519 Phosphor Bronze 6% Alloy Wire (CuSn6)

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A phosphor bronze, alloy C519 has 6% nominal tin producing higher mechanical strengths with a slight decrease in electrical conductivity when compared to C510 phosphor bronze. Often functionally interchangeable with C510 which predominates in North America, alloy C519 is generally used in Europe.

English UnitsMetric Units

Mechanical Properties

Round Wire

TEMPER NAME  TEMPER CODE  TENSILE STRENGTH (ksi) MILL LIMITS 
MIN MAX
Soft R370 54 68 .0010 - .1285 inch
1/4 Hard R460 67 81
1/2 Hard R560 81 97
3/4 Hard R670 97 115
Hard R790 115 138
Spring R950 138 ---

Square Wire

TEMPER NAME  TEMPER CODE  TENSILE STRENGTH (ksi) MILL LIMITS 
MIN MAX
Soft R370 54 68 .0100 - .0808 inch
1/4 Hard R460 67 81
1/2 Hard R560 81 97
3/4 Hard R670 97 115
Hard R790 115 138
Spring R950 138 ---

Rolled Flat

TEMPER NAME TEMPER CODE TENSILE STRENGTH (ksi) MILL LIMITS 
MIN MAX
Soft O60 48 63

Thickness: 
.0100 - .0500 inch

Width:
.0150 - .2500 inch
1/2 Hard H02 64 79
Hard H04 80 96

Physical Properties

Melting Point (Liquidis) 1900°F
Melting Point (Solidus) 1700°F
Density 0.319 lbs/cu in
Electrical Resistivity (Annealed) 74 Ω⋅cmil/ft @ 68°F
Electrical Conductivity (Age Hardedned) 14% IACS @ 68°F
Thermal Conductivity (Solutionized-Aged) 38 Btu ft/sq ft hr °F @ 68°F
Coefficient of Thermal Expansion 0.00001°F (68-572°F)
Modulus of Elasticity (Tension) 16000 ksi
Modulus of Rigidity 6000 ksi

For a full size version of product specifications, including chemical composition in both US and Metric units, please download the PDF.