bedra51000

Phosphor Bronze

Characteristics:

bedra51000 is a bronze alloy containing approximately 5% tin and 0.2% phosphorus for deoxidation. The addition of tin increases the strength and corrosion resistance in marine environments. It offers an optimized combination of engineering properties, such as excellent fatigue and spring characteristics, outstanding resistance to stress relaxation, high strength and ductility, coupled with good corrosion resistance.

Typical applications:

This alloy is widely used in spring-loaded conductivity applications, such as springs, contacts, terminals, electrical and electronic connectors. It is also used as fasteners and in wear- and corrosion-resistant parts, such as thrust washers, gears, marine propellers, textile machinery bearings, sleeve bushings, and clutch discs.

Standardization and composition

UNS C51000
EN /
JIS /
GB C51000 (QSn5-0.2)
Cu balance
Sn 4.20-5.80%
P 0.03-0.35%
Pb ≤ 0.05%
Fe ≤ 0.10%
Zn ≤ 0.30%

Physical properties①

Note①:The testing temperature is 20℃. Note②:The testing temperature range is 20℃ to 300℃.

Density (g/cm³) 8.86
Metling temperature (℃) 1049
Electrical conductivity (%IACS) 15
Thermal conductivity (W / m x K) 69.2
Coefficient of thermal expansion② (10-6/K) 17.1
Modulus of elasticity (GPa) 110

Fabrication Properties

Note③:C36000 = 100%

Capacity for being cold worked Excellent
Capacity for being hot formed Poor
Brazing Excellent
Resistance welding Good
Machinability rating③ 20%

Mechanical Properties

Temper Diameter (mm) Tensile Strength (MPa) Yield Strength (MPa min.) Elongation (% min.) Hardness (HV5 min.)
H04 20≤Φ≤25.4 414 / 15 /
H04 25.4<Φ≤50 380 / 18 /

Dimension Tolerance and Delivery Form

Note④:The tolerances listed in the table are specified as all plus or all minus. When tolerances are specified as plus and minus (±), half the values given.

      Straight bar  
Diameter (mm) Tolerance④ (mm) Ovality (mm max.) Length (mm max.) Straightness (mm/m max.)
20≤Φ<30 0.20 0.10 3000 2.0
30≤Φ<50 0.30 0.15 3000 3.0
50≤Φ<80 0.80 0.40 3000 4.0
80≤Φ≤100 1.6 0.80 2000 4.0

Other Delivery Forms

Tubes

Further product information

Please contact us

Sales Asia-Pacific (Excluding-India)

Tracy Lu

Tracy Lu

Sales Director Asia-Pacific (Excluding India)

Leo Zhang

Leo Zhang

International Marketing Manager for Aluminum Welding Wire

Sales India

Jacob Kuvvarapu

Jacob Kuvvarapu

Sales Director India

Jay Davda

Jay Davda

Sales Manager India

Gerry Li

Gerry Li

Supervisor of Inside Sales

Sales North America

Mike Darling

Mike Darling

Sales & Marketing Director North America

Stephen Garner

Stephen Garner

Sales Manager North America

Tom Zhou

Tom Zhou

Supervisor of Inside Sales

Sales Europe

Tony Zeng

Tony Zeng

General Manager Sales/Marketing of Rod & Wire Europe

Wolfram Schillinger

Wolfram Schillinger

Director of Technical Marketing Rod & Wire Europe

Anthony Dick

Anthony Dick

Sales Manager Rod & Wire Europe

Helen Yang

Helen Yang

Supervisor of Inside Sales

Berkenhoff GmbH (headquarters)

  • Kinzenbach plant
  • Berkenhoffstrasse 14
  • 35452 Heuchelheim
  • Germany

Berkenhoff GmbH

  • Merkenbach plant
  • Rehmühle 1
  • 35745 Herborn
  • Germany

bedra Vietnam Alloy Material Co., Ltd

  • Lot CN-06, Hoa Phu Industrial Park,
    Mai Dinh Commune,
    Hiep Hoa District, Bắc Ninh Province,
    Vietnam
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