Phone：973-278-1666
Technical Data
Menu
CLOSE

Phosphor Bronze, C51000 Grade A

Home Phosphor Bronze Wire Phosphor Bronze, C51000 Grade A

PHOSPHOR BRONZE
C51000 Grade A

COMPOSITION
PHOSPHOR BRONZE C51000 GRADE A
ELEMENT PERCENT
NOMINAL MINIMUM MAXIMUM
Tin 5.0 4.2 5.8
Phosphorus .20 .03 .35
Iron – – .10
Lead – – .05
Zinc – – .30
Copper & Tin 
& Phosphorus		 – 99.5 –

 

PHYSICAL PROPERTIES
PHOSPHOR BRONZE C51000 GRADE A
HEAT TREATED CONDITION ENGLISH UNITS METRIC UNITS
Melting Range 1750-1920°F 950-1050°C
Density .320 lb/cu in. @ 68°F 8.86 gm/cm@ 20°C
Specific Gravity 8.86 8.86
Coefficient of Thermal Expansion .0000099 per °F (68-392°F) .0000178 per °C (20-200°C)
Thermal Conductivity 40 BTU/sq ft/ft/hr/°F @ 68°F .17 cal/sq cm/cm/sec/°C @ 20°C
Electrical Resistivity (Annealed) 69.1 Ohms circ mil per ft @ 68°F 11.5 microhm – cm @ 20°C
Electrical Conductivity (Annealed) 15% Copper IACS @ 68°F .0870 megohm cm @ 20°C
Specific Heat .09 BTU/lb/°F @ 68°F .09 cal/gm/°C @ 20°C
Modulus of Elasticity (tension) 16,000 KSI 11,200 kg/sq mm
Modulus of Rigidity (torsion)
 6000 KSI 4200 kg/sq mm
Annealing Temperature 900-1250°F 480-675°C
Stress Relief Temperature 300-450°F 150-230°C

* 1 KSI equals 1,000 PSI

MECHANICAL PROPERTIES
PHOSPHOR BRONZE C51000 GRADE A

For Round, Half Round and Square Wire
DESIGNATION TENSILE STRENGTH YIELD STRENGTH .2% Offset
STD FORMER KSI* MPa** KSI* MPa**
O61 Annealed (A) 43-58 295-400 15-28 100-190
HO1 Quarter Hard (1/4H) 60-76 415-525 52-68 355-465
HO2 Half Hard (1/2H) 80-97 550-670 75-92 515-635
HO3 Three Quarters Hard (3/4H) 96-115 660-795 91-110 625-755
HO4 Hard 108-128 745-880 103-122 710-840
HO8

Spring:
.025″ and under
over .025″ to .0625″
over .0625″ to .125″

 min
145
135
130		 min
1000
930
890		 min
140
130
125		 min
965
895
860

 

MECHANICAL PROPERTIES
PHOSPHOR BRONZE C51000 GRADE A

For Rolled Flat Wire other than Square
DESIGNATION TENSILE STRENGTH YIELD STRENGTH .2% Offset
STD FORMER KSI* MPa** KSI* MPa**
061 Annealed (A) 43-58 295-400 15-28 103-193
H02 Half Hard (1/2H) 58-73 400-505 52-65 358-448
H04 Hard (H) 76-91 525-625 70-85 482-586
H06 Extra Hard (XH) 88-103 605-710 83-98 572-675
H08 Spring 95-110 655-760 90-105 620-723
H10 Extra Spring 100-114 690-785 95-110 655-758

*1KSI equals 1,000 PSI
** 1KSI equals 6.894,757 MPa (Megapascal)

PHOSPHOR BRONZE C51000 Grade A


ASTM Material Specifications