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Phosphorbronze CuSn6 (CW452K)

CuSn6 is characterised by a particularly favourable combination of strength, hardness and cold formability. The material is wear-resistant, has very good corrosion resistance and can be soldered easily. Due to its electrical conductivity, CuSn6 is also used for conductors.

We stock CuSn6 in sheets and plates. Bars and tubes are available in the material CuSn8 (CW453K) from our extensive stock ranges.

Index

Properties

Chemical properties

Cu Balance
Sn 5,5 - 7 %
P 0,01 - 0,4 %
Maximum permissible additionsFe 0,1 %, Ni 0,2 %, Pb 0,02 %, Zn 0,2 % others 0,2 %

Mechnical properties - plates

ConditionTensile strength
Rm N/mm2		 Yield strength
Rp 0,2 N/mm2		 Elongation
A %		 Hardness
HV
M* ***
H160 (hard)160 - 190
H180 (spring hard)180 - 210

Product variants

Sheets / plates

Alloy 
CuSn6, CW452K
Variant 
≤ 10 mm thickness: cold-rolled

≥ 12 mm thickness: hot-rolled
Norm 
DIN EN 1652
Tolerance 
DIN EN 1652
Strength 
Format 300 x 2.000 mm

≤ 10,0 mm thickness:

H180, spring hard, HV 180 -210



12 -25 mm thickness: 

mostly H160, hard, HV 160 -190



Format 600 x 2.000 mm

all thicknesses: H160, hard, HV 160 -190
Datasheet Datasheet

Similar materials

  • CuSn6, 2.1020, DIN 17662
  • C51900 UNS
  • PB 103, BS 2870-2875

Typical applications

Due to its high strength and good spring properties, CuSn6 is used, for example, for springs of all kinds.

  • Springs for contacts
  • Connectors  
  • Current-carrying springs for switching elements
  • Pump parts
  • Watch and clock parts 

In addition, CuSn6 is widely used in the paper, cellulose, textile and chemical industries, as well as in shipbuilding, mechanical engineering and apparatus engineering.

Our service – your benefits

Schreier Metall stands for maximum customer focus and first-class quality. With our competitive prices and comprehensive services, we offer you maximum flexibility:

  • Direct enquiry for stock levels and prices:
    Our webshop enables fast planning and cost transparency.
  • Large stock range:
    We keep a wide variety of items in stock, allowing us to deliver your order promptly and without bottlenecks.
  • Fast delivery:
    Thanks to optimised logistics, we safeguard your production and minimise downtimes. We also deliver small quantities carriage paid.
  • High-quality products:
    All semi-finished products are manufactured to the highest quality standards and meet the requirements of modern industrial processes. 

Choose Schreier Metall – your partner for semi-finished products made from CuSn6 and other tin bronze alloys! We guarantee reliability, fair prices and consistently secure supply. Get in touch – we will be happy to advise you personally!

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