bercoweld® K5

bercoweld®  K5 is suitable for highly-stressed welded joints on oxygen-free copper and Cu materials. Very good processability and pore-free weld seams. When TIG welding large workpieces, preheating to 300° C is recommended.

Standardization and composition

ISO 24373 CuSn1 Cu1898
Cu balance
Sn 0.75 - 0.90
Mn 0.15 - 0.30
P 0.005 - 0.020
Si 0.15 - 0.25
others max. 0.5

Physical properties

Density (kg/dm³) 8.9
Melting range (°C) 1020 - 1050
Thermal conductivity (W / m x K) 120 - 145
Coefficient of linear mean expansion (10-6/K) 18.1
Electric conductivity (m / Ω x mm²) 15 - 20
Resistivity (Ω x mm² /m) 0.05 - 0.0667

Mechanical properties of the weld joint, standard data

Heat treatment non treated
Tensile strength (MPa) 220
Elongation (%) 30
Brinell hardness (HB 2.5/62.5) 60
Notched bar impact test (Av (J)) 75

Delivery options

Make-up Weight/Length Dimension
Drum / bedrabox 175 - 200 kg 0.80 - 1.60 mm
SD300 / BS300 / K300 12 - 15 kg 0.80 - 2.40 mm
H500 / H560 / H760 150 - 250 kg 0.80 - 2.40 mm
Coils 25 - 100 kg 1.60 - 6.00 mm
Rods 250 - 3000 mm 1.60 - 6.00 mm

Further product information

Please contact me and my team

Ulrike Ogorzelski

Ulrike Ogorzelski

Sales Director Welding Europe
bedra Germany

Tim Joseph

Tim Joseph

Sales Director Welding North America
bedra USA

Gini Xia

Gini Xia

Sales Director Assistant Welding Asia
bedra China

Berkenhoff GmbH (headquarters)

  • Kinzenbach plant
  • Berkenhoffstrasse 14
  • 35452 Heuchelheim
  • Germany

Berkenhoff GmbH

  • Merkenbach plant
  • Rehmühle 1
  • 35745 Herborn
  • Germany

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