Copper Nickel

C51000 Phosphor Bronze

Strength and Performance in Extreme Environments

C51000 Phosphor Bronze is a copper alloy enriched with tin and phosphorus, known for its outstanding cold formability and resistance to stress relaxation. Grade A 5% Phos Bronze offers high strength and excels in soldering and brazing, making it ideal for stamped connectors. The addition of tin and phosphorus enhances its corrosion resistance and provides superior spring qualities, essential for various applications. This versatile alloy is extensively used in the electronic, electrical, and automotive industries, particularly where drawing, spinning, blanking, or cold working is necessary. Its combination of robust mechanical properties and corrosion resistance makes C51000 Phosphor Bronze an ideal choice for demanding applications across different sectors. Its reliability and adaptability meet the needs of intricate and high-performance components, ensuring durability and efficiency in challenging environments.

Available Shapes for

C51000 Phosphor Bronze

Sheet
Sheet
Bar
Bar

Applications for

C51000 Phosphor Bronze

Connectors
Electrical Switches
Switches
Cotter Pins
Lock Washers
Sleeve Bushings
Diaphrams
Bellows
Electrical Connectors
Fuse Clips
Spring Components

Description

C51000 Phosphor Bronze is a copper alloy enriched with tin and phosphorus, known for its outstanding cold formability and resistance to stress relaxation. Grade A 5% Phos Bronze offers high strength and excels in soldering and brazing, making it ideal for stamped connectors. The addition of tin and phosphorus enhances its corrosion resistance and provides superior spring qualities, essential for various applications. This versatile alloy is extensively used in the electronic, electrical, and automotive industries, particularly where drawing, spinning, blanking, or cold working is necessary. Its combination of robust mechanical properties and corrosion resistance makes C51000 Phosphor Bronze an ideal choice for demanding applications across different sectors. Its reliability and adaptability meet the needs of intricate and high-performance components, ensuring durability and efficiency in challenging environments.

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Test Image
  • Specifications
  • Mechanical Properties
  • Composition
  • Physical Properties
  • Applications
ASTM ASTM AMS MILITARY
Sheet ASTM B103 ASTM B139 AMS 4510 QQ-B-750
Bar ASTM B103 ASTM B139 AMS 4625 QQ-B-750
BAR – Round
Commercial
TEMPER SIZE TENSILE, KSI, MIN TENSILE, KSI, MAX Elong. % Min
O60 under 1/4″ 40 58
H04 under 1/4″ 80 128
1/4″ to 1/2″ 70 13
over 1/2″ to 1″ 60 15
over 1″ 55 18
H08 over 1/8″ to 1/4″ 105 3.5
over 1/4″ to 3/8″ 100 5
over 3/8″ to 1/2″ 90 9
QQ-B-750
TEMPER SIZE TENSILE, KSI, MIN TENSILE, KSI, MAX Elong. % Min
Soft under 1/4″ 40 58
Hard under 1/4″ 80 128
1/4″ to 1/2″ 70 13
over 1/2″ to 1″ 60 15
1″ to 3″ 55 18
Over 3″ 50 18
Spring over 1/8″ to 1/4″ 105 3.5
over 1/4″ to 3/8″ 100 5
over 3/8″ to 1/2″ 90 9
SHEET
Commercial
TEMPER SIZE TENSILE, KSI, MIN TENSILE, KSI, MAX
O60 over .039″ 43 58
H02 over .039″ 58 73
H04 over .039″ 76 91
H06 over .039″ 88 103
H08 over .039″ 95 110
H10 over .039″ 100 114
QQ-B-750
TEMPER SIZE TENSILE, KSI, MIN TENSILE, KSI, MAX
Soft all sizes 40 55
Half-Hard all sizes 55 70
Hard all sizes 72 87
Extra-Hard all sizes 99 84
Spring all sizes 91 105
Extra-Spring all sizes 96 109
COMMERCIAL
UNS No. Copper Tin Phoshporus Lead Iron Zinc
C51000 remainder 4.2-5.8 0.03-0.35 0.05 max 0.10 max 0.30 max
QQ-B-637
UNS No. Copper Tin Phoshporus Lead Iron Zinc Copper + Tin + Phosphorus
C51000 remainder 3.5-5.8 0.03-0.35 0.05 max 0.10 max 0.30 max 99.5 min
Density @ 68o F 0.32 lb/in3
Melting Range 1750- 1920o F
Hot Formability Poor
Cold Formability Excellent
Machinability rating (C360 = 100) 20
Brazing Excellent
Soldering Excellent
Gas-shielded arc welding Good
Oxy-acetylene welding Fair
Coated metal-arc welding Fair
Resistant welding: spot and seam Fair
Resistance Welding: butt Excellent
* Electrical Connectors
* Electronic Connectors
* Fuse Clips
* Spring Components
* Switch Parts
* Cotter Pins
* Lock Washers
* Fasteners
* Beater Bar
* Sleeve Bushings
* Diaphrams
* Bellows