*Alloy 46, UNS K94600, (Fe-46Ni)，Chinese
4J46
Grade & Chemical Composition (see table
1)
Table 1 Grade & Chemical Composition
|
Grade
|
Chemical Composition (%)
|
|
C
|
P
|
S
|
Mn
|
Si
|
Ni+Co+Cu
|
Co
|
Cu
|
Fe
|
|
≤
|
|
4J46
|
0.05
|
0.020
|
0.020
|
0.40
|
0.30
|
45.0～46.0
|
5.0～6.0
|
3.0～4.0
|
Bal
|
NOTES:
1、Under condition that the average coefficient of the linear expansion meets
the requirements of the standard, the content of nickel, cobalt and copper are
allowed to deviate from the stated range.
2、The shape and dimensions of
the alloys are in compliance with GB/T14985.
Physical
Property (see table 2)
Table 2 coefficient of linear
expansion
|
Grade
|
Heat treatment of samples
|
Average coefficient of linear expansion
|
|
20～300°C
|
20～400°C
|
20～500°C
|
|
4J46
|
Heat to 850～900°C in a protective
atmosphere or in vacuum condition, hold for 1 hour, and then cool to300℃ at a rate less than 300℃/h
|
5.5～6.5
|
5.6～6.6
|
7.0～8.0
|
Notes:
1. The Vickers hardness of the annealed strip
(sheet) should be no more than 170.
2. For the unannealed strip (sheet) delivered,
after heat treat at 900℃, and then hold for 30 min, the Vickers hardness should be
no more than 170.
Typical Property (see table 3—table 6)
Table 3 coefficient of linear expansion
|
Grade
|
Average coefficient of linear expansion in different temperature, ā/(10-6/K)
|
|
20～100℃
|
20～200℃
|
20～300℃
|
20～400℃
|
20～500℃
|
20～600℃
|
|
4J46
|
6.8
|
6.5
|
6.4
|
6.4
|
7.9
|
9.3
|
Table 4 Mechanical Property
|
Grade
|
Heat treatment temp
℃
|
Tensile strength
sb/MPa
|
Tensile stretch
δ(%)
|
Hardness
/HV
|
Grain size
|
|
4J46
|
750
|
527.5
|
34.8
|
137.4
|
7
|
|
850
|
510
|
35.4
|
134.6
|
6
|
|
950
|
483.5
|
36.7
|
128.1
|
6～5
|
|
1050
|
466.5
|
34.3
|
125.6
|
5～4
|
Table
5 Magnetic Property
|
Grade
|
Magnetic Induction
|
Remanent magnetic
induction
/ Br/T
|
Coercivity
|
Maxmum Perameability
|
|
B10/T
|
Bl00/T
|
|
4J46
|
1.58
|
1.6l
|
0.31
|
2.96
|
55.5
|
Table 6 Other Propertise of the Alloy
|
Grade
|
modulus of elasticity
|
Resistivity
|
thermal conductivity200℃/[W/(m·K)
|
Density
/(g/cm3)
|
|
4J46
|
137500
|
0.54
|
20.1
|
8.18
|
Usage:
This alloy has a constant average linear expansion coefficient at the range of
20 °C to 500 °C. It is mainly used with 95% aluminum oxide
ceramic to form air tight seal in vacuum electronics.
Specification:
Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube
Size Range:
*Sheet---thickness 0.05mm~3.5mm, width:≤350mm,Condition: cold rolled, bright,
bright annealed
*Plate---thickness 3.5mm~40.0mm,width:≤300mm,Condition: cold rolled, hot
rolled, annealed
*Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright
annealed
*Flat Wire---Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright
annealed
*Bar---Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright
annealed
Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot
rolled,bright, bright annealed
Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot
forging,peeled, turned, hot treated
Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn,
bright, bright annealed
Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn,
bright, bright annealed
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