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Phosphor Bronze Wire from InterWire is ASTM B159 standard specification for Phosphor Bronze Wire.
Chemical Requirements: (Composition, %)
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Copper Alloy UNS#
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Copper
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Lead, max
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Iron, max
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tin
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zinc, max
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phosphorus
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C51000
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Remainder*
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0.05
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0.10
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4.2-5.8
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0.30
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0.03-0.35
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* Taken by difference
Mechanical Requirements for Round or Square Wire for General Purposes
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Code
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Temper Designation
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Tensile Strength KSI Min
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O61
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Annealed
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43.0-58.0
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H01
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Quarter-Hard
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60.0-76.0
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H02
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Half-Hard
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80.97.0
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H03
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Three Quarter-Hard
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96.0-115.0
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H04
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Hard
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108.0-128.0
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H08
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Spring
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See next table
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Mechanical Requirements for H08 (Spring Temper) for UNS No. C51000 Round or Square Wire
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Diameter or Distance Between Parallel Surfaces, inches
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Tensile Strength KSI, minimum
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Elongation in 2 inch minimum, %
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0.025 and under
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145.0
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N/A
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Over 0.025 to 0.0625
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135.0
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N/A
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Over 0.0625 to 0.125
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130.0
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N/A
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Over 0.125 to 0.250
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125.0
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N/A
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Over 0.250 to 0.375
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120.0
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5.0
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Over 0.375 to 0.500, incl
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105.0
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9.0
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