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Phosphor Bronze

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Phosphor Bronze

C5210 Chemical compositions Cu-8Sn
Highlights Superior spring toughness, Bend formability
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C5212 Chemical compositions Cu-8Sn
Highlights Superior spring toughness, Bend formability
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C5191 Chemical compositions Cu-6Sn
Highlights Superior spring toughness, Bend formability
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C5102 Chemical compositions Cu-5Sn
Highlights Superior spring toughness, Bend formability
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C5111 Chemical compositions Cu-4Sn
Highlights Superior spring toughness, Bend formability
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See Chemical compositions and properties

Chemical compositions and properties

Alloy Name Hyper Phosphor Bronze Phosphor Bronze
C5210 (HP) C5240 (HP) C5111 C5102 C5191 C5212 C5210
Chemical Composition (wt%) Cu : Rest
Sn : 8.0
P : 0.2
Cu : Rest
Sn : 10.0
P : 0.15
Cu : Rest
Sn : 4.0
P : 0.08
Cu : Rest
Sn : 5.0
P : 0.2
Cu : Rest
Sn : 6.0
P : 0.2
Cu : Rest
Sn : 8.0
P : 0.2
Cu : Rest
Sn : 8.0
P : 0.2
Physical Properties Specific Gravity (g/cm3) 8.80 8.78 8.87 8.86 8.83 8.80 8.80
Modulus of Elasticity (MPa) 110,000 100,000 110,000 110,000 110,000 110,000 110,000
Electrical Conductivity (%IACS @20℃) 12 10 17 15 14 13 13
Poisson's Ratio 0.33 0.33 0.33 0.33 0.33 0.33 0.33
Mechanical Properties

*Standard specs.
Tensile Strength (MPa) O - - 295min 305min 315min 345min -
1/4H - - 345-440 375-470 390-510 390-510 -
1/2H - - 410-510 470-570 490-610 490-610 470-610
H 590-705 650-750 490-590 570-665 590-685 590-705 590-705
EH 685-785 750-850 570min 620min 635min 685min 685-785
SH 735-835 850-950 - - - - 735-835
ESH 785-885 950-1050 - - - - -
XSH 835-1000 1000-1200 - - - - -
0.2% Yield Strength (MPa) O - - - - - - -
1/4H - - - - - - -
1/2H - - - - - - -
H (565) 580-690 - - - - (528)
EH (688) 650-790 - - - - (667)
SH (760) 780-920 - - - - (710)
ESH (823) 900-1030 - - - - -
XSH (879) 950-1190 - - - - -
Elongation (%) O - - 38min 40min 42min 45min -
1/4H - - 25min 28min 35min 40min -
1/2H - - 12min 15min 20min 30min 27min
H 20min 11min 7min 7min 8min 12min 20min
EH 11min 9min 3min 4min 5min 5min 11min
SH 9min 5min - - - - 9min
ESH 5min 1min - - - - -
XSH 1min - - - - - -
Vickers Hardness (Hv) O - - - - - - -
1/4H - - 80-150 90-160 100-160 100-160 -
1/2H 140-205 - 120-180 130-190 150-205 150-205 140-205
H 185-235 200-240 150-200 170-220 180-230 180-235 185-235
EH 210-260 230-270 - 190min 200min 210min 210-260
SH 230-270 250-290 - - - - 230-270
ESH 245-285 270-310 - - - - -
XSH - 290min - - - - -
Bend Formability

*Badway90°W bend
Width=10mm data
Minimum Bend Radius / t Badway 1/2H - - - - - - -
H 0.0 0.0 (t=0.1mm) - - - - 0.5
EH 0.5 1.0 (t=0.1mm) - - - - 2.0
SH 2.0 3.0 (t=0.1mm) - - - - 2.5
ESH 4.0 - - - - - -