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Ceramvar Alloy

Ceramvar AlloyCeramvar AlloyCeramvar AlloyCeramvar Alloy

Product Introduction

Ceramvar alloy, ASTM F1466,(Ni27Co25),Chinese 4J33/4J34
CERAMVAR ALLOY or we call iron-nickel-cobalt alloys, nominally 27% nickel, 25% cobalt and 48% iron, in the forms of wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with alumina ceramics, for vacuum electronic applications. Unless otherwise indicated.
Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

Product details

Description

CERAMVAR ALLOY or we call iron-nickel-cobalt alloys, nominally 27% nickel, 25% cobalt and 48% iron, in the forms of wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with alumina ceramics, for vacuum electronic applications. Unless otherwise indicated. When tested, the alloys shall comply to specified requirements for chemical composition, surface finish, temper, grain size, tensile strength, hardness, inclusion content, thermal expansion, transformation, and dimensions.

Application

Glass to metal ,vacuum electronic , metal-to-ceramic seals.

parameter

Cross Reference:

Russia Japan
33HK(Ni33Co17) -

Typical chemistry:

C S P Si Mn Ni Co Fe
0.05 0.020 0.020 0.30 0.50 32.1-33.6 14.0-15.2 Balance

Mechanical Properties:

Tensile Strength(for wire)

Symbol State Tensile Strength
R Annealed <585
1 Unannealed >860

Tensile Strength(for strip)

Symbol State Tensile Strength
R Annealed <570
1 Unannealed >700

Hardness of Deep stamping strips

state Thickness Hardness HV
  Deep-stamping >2.5 <170
<2.5 <165

Average Coefficient of Linear Expansion

Heat Treatment of the Samples Mean Coefficient of Linear Expansion
20 to 4l00℃ 20 to 500℃
Heat to 900±20℃ in the protective atmosphere or in vacuum condition, hold for 1 hour, cooled to 200℃ at a rate less than 5℃/h, and take out from the furnace. 6.0~6.8 6.6~7.4

Mean coefficient of linear at different temperature, ā/(10-6/K)

Ceramvar-Alloy

Notes: under condition that the average coefficient liner expansion meets the requirements of standard, the content of nickel and cobalt are allowed to deviate from the stated range.

Size Range

Sheet Thickness:0.10mm~3.50mm, width: ≤300mm
Plate Thickness:3.5mm~40.0mm, width: ≤500mm
Round wire Thickness:0.10mm~5.0mm
Flat Wire Dia 0.5mm~Dia 5.0mm, length≤1000
Rod Dia 5.0mm~Dia 8.0mm, length≤2000
Dia 8.0mm~Dia 32.0mm, length≤2500
Dia 32.0mm~Dia180.0mm, length≤1000
Capillary OD 8.0mm~1.0mm,ID 0.1~8.0 length≤2500
Pipe OD 120mm~8.0mm,ID 8.0~129 length≤4000

Condition: (With max tolerance) cold rolled, cold drawn, hot rolled , hot forging ,peeled turned ,bright ,bright annealed

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