kovar steel 4J29

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$10.00 - $100.00 / Kilograms | 1000 Kilogram/Kilograms (Min. Order)
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Overview
Quick Details
Place of Origin:
Liaoning, China (Mainland)
Brand Name:
DLDT
Model Number:
4J29
material:
4J29
shape:
round bar, strip, wire, coil
brand:
DLDT
Color:
black or polished or bright
Certification:
mill's test certificate
Tolerance:
according to customer's request
Application:
Industrial Magnet
Composite:
Ferrite Magnet
Type:
Permanent
Shape:
Bar
Supply Ability
Supply Ability:
25000 Ton/Tons per Year
Packaging & Delivery
Packaging Details
wooden box
Port
dalian port
Lead Time :
within 20 days after receiving the deposit

sealing alloy 4J29 

 

 

 

1.Typical chemical composition

gradeCSiMnPSNiCoFe
4J330.0300.120.260.0060.00533.1014.50Bal
4J290.0150.120.250.0060.00529.1017.30Bal
4J420.0200.200.500.0060.00541.700.05Bal

 

2.Physical properties

gradeDensity(g/cm)Young Modulus(Mpa)Mean Coefficient of Thermal Expansion(10¯6 °c)Curie point(°c)Electrical resistivity (μΩ.cm)Specific heat(J/kg.°c)Thermal conductivity
4J338.16175*103

6.4(20-400°c)

6.9(20-500°c)

44044(20°c)39818.6
4J298.17165*103

5.0(20-400°c)

5.2(20-450°c)

43046(20°c)41820.3
4J428.14150*103

4.8(20-300°c)

6.9(20-450°c)

35062(20°c)176.815.5

 

3.Mechanical properties

  Yield Strength(Mpa)Tensile Strength(Mpa)Elongation(%)Hardness
4J33Cold-rolling6987855235
 As annealed32454022152
4J29Cold-rolling6957805230
 As annealed31552024148
4J42Cold-rolling6427408215
 As annealed27246029135

 

4.Characteristics

 4J33 alloy has a thermal expansion coefficien similar to porcelain. It is used for vacuum electronic component. 4J42 and 4J29 alloys have a thermal expansion coeficient similar to glass and easily form compact oxide film necessary for the sealing.

 

 

 

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