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Beryllium Copper Shims

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Beryllium Copper C17200 / Beryllium Copper Alloy 25, European Standards: CuBe2, DIN 2.1247, CW101C to EN BeCu

Chemical component:

Alloy number

Be

Ni Co

Ni Co Fe

Be Ni Co Fe Cu

C17200 / Alloy 25

1.8-2.0

≥0.2

≤0.6

≥99.5

Beryllium Copper Mechanical property:(before heat treatment)

Status

Tensile strength

(kg/mm3)

Hardness

(HV)

Conductivity

(IACS%)

Elongation

(%)

H

70-85

210-240

22

2-8

1/2H

60-71

160-210

22

5-25

O

42-55

90-160

22

35-70

Beryllium Copper Mechanical property:(after heat treatment)

Status

Tensile strength

(kg/mm3)

Hardness

(HV)

Conductivity

(IACS%)

Elongation

(%)

H

130-151

380-420

22

1-5

1/2H

126-147

370-410

22

2-7

O

112-135

350-339

22

3-11

Typical Physical Properties:

  • Density (g/cm3): 8.36
  • Density before age hardening (g/cm3): 8.25
  • Elastic Modulus (kg/mm2 (103)): 13.40
  • Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6
  • Thermal Conductivity (cal/(cm-s-°C)): 0.25
  • Melting Range (°C): 870-98

Physical property:

  • High strengthHigh hardness
  • High elasticity
  • Superior fatigue resistance
  • Superior abrasion resistance
  • Superior mouldability and isotropy


Application:

  • Relays
  • Connectors/sensors
  • Temperature control switch
  • Switch/micro switch/micro-motors brush
  • Strong spring/the thermostat spring/all kinds of spring piece


Heat treatment processing: vacuum furnace(or room temperature)→315°c±5°c→keep warm2H→natural cooling

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