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0.5mm Thickness Precision Alloys Soft Condition for IC Pin , Fe Ni alloy

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0.5mm Thickness Precision Alloys Soft Condition for IC Pin , Fe Ni alloy

Brand Name : OHMALLOY
Model Number : 4J29
Certification : SGS, ISO, RoHS
Place of Origin : China(Shanghai)
MOQ : 30 KG
Price : negotiable
Payment Terms : L/C, D/A, D/P, T/T, Western Union
Supply Ability : 25000 KG per month
Delivery Time : 25-35 working days
Packaging Details : Coil + Waterproof paper + Wooden case
Material : Fe Ni alloy
Condition : Soft
Thickness range : 0.05mm ~ 5.0mm
Package : Coil, Waterproof paper, Wooden case
Surface : Bright
Density : 8.2 g/cm3
Application : IC production
Annealing Treatment : In Vacuum Furnace
Elongation : more than 25%
Temperature factor of resistivity(20℃~100℃)X10-5/℃ : 3.7~3.9
Certificate : ISO, SGS, RoHS
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0.5mm Thickness Precision Alloys Soft Condition for IC Pin , Fe Ni alloy


Kovar strip for IC production frame


OhmAlloy-4J29 (Expansion alloy)
(Common Name: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)


OhmAlloy-4J29 also known as Kovar alloy. it was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research. Most metals cannot seal to glass because their coefficient of thermal expansion is not the same as glass, so as the joint cools after fabrication the stresses due to the differential expansion rates of the glass and metal cause the joint to crack.


Kovar is a nickel–cobalt ferrous alloy compositionally identical to Fernico, designed to be compatible with the thermal expansion characteristics of borosilicate glass (~5 × 10−6 /K between 30 and 200 °C, to ~10 × 10−6 /K at 800 °C) in order to allow direct mechanical connections over a range of temperatures. It finds application in electroplated conductors entering glass envelopes of electronic parts such as vacuum tubes (valves), X-ray and microwave tubes and some lightbulbs.

The name Kovar is often used as a general term for Fe–Ni alloys with these particular thermal expansion properties. Note the related particular Fe–Ni alloy Invar which exhibits minimum thermal expansion.


OhmAlloy-4J29was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research. Most metals cannot seal to glass because their coefficient of thermal expansion is not the same as glass, so as the joint cools after fabrication the stresses due to the differential expansion rates of the glass and metal cause the joint to crack.


Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.


Style of supply


Alloys NameTypeDimension
OhmAlloy-4J29WireD= 0.1~8mm
OhmAlloy-4J29StripW= 5~250mmT= 0.1mm
OhmAlloy-4J29FoilW= 10~100mmT= 0.01~0.1mm
OhmAlloy-4J29BarDia= 8~100mmL= 50~1000mm

Normal composition%

Ni28.5~29.5FeBal.Co16.8~17.8Si≤0.3
Mo≤0.2Cu≤0.2Cr≤0.2Mn≤0.5
C≤0.03P≤0.02S≤0.02


Tensile Strength, MPa

Code of conditionConditionWireStrip
RSoft≤585≤570
1/4I1/4 Hard585~725520~630
1/2I1/2 Hard655~795590~700
3/4I3/4 Hard725~860600~770
IHard≥850≥700

Typical Physical properties

Density (g/cm3)8.2
Electrical resistivity at 20(Ωmm2/m)0.48
Temperature factor of resistivity(20~100)X10-5/3.7~3.9
Curie point Tc/ 430
Elastic Modulus, E/ Gpa138

Thermal conductivity

θ/℃100200300400500
λ/ W/(m*℃)20.621.522.723.725.4


The heat treatment process

Annealing for stress reliefHeated to 470~540℃ and hold 1~2 h. Cold down
annealingIn vacuum heated to 750~900℃
Holding time14 min~1h.
Cooling rateNo more than 10 ℃/min cooled to 200 ℃

Coefficient of expansion

θ/℃α1/10-6-1θ/℃α1/10-6-1
20~607.820~5006.2
20~1006.420~5507.1
20~2005.920~6007.8
20~3005.320~7009.2
20~4005.120~80010.2
20~4505.320~90011.4


FAQ

1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.


2. How can you pay for small sample amount?
We have Western union account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.


Product Tags:

low expansion alloys

      

Fe Ni alloy

      
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