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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

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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,

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 Name Type Dimension
OhmAlloy-4J29 Wire D= 0.1~8mm
OhmAlloy-4J29 Strip W= 5~250mm T= 0.1mm
OhmAlloy-4J29 Foil W= 10~100mm T= 0.01~0.1mm
OhmAlloy-4J29 Bar Dia= 8~100mm L= 50~1000mm

Normal composition%

Ni 28.5~29.5 Fe Bal. Co 16.8~17.8 Si ≤0.3
Mo ≤0.2 Cu ≤0.2 Cr ≤0.2 Mn ≤0.5
C ≤0.03 P ≤0.02 S ≤0.02

Tensile Strength, MPa

Code of condition Condition Wire Strip
R Soft ≤585 ≤570
1/4I 1/4 Hard 585~725 520~630
1/2I 1/2 Hard 655~795 590~700
3/4I 3/4 Hard 725~860 600~770
I Hard ≥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/ Gpa 138

Thermal conductivity

θ/℃ 100 200 300 400 500
λ/ W/(m*℃) 20.6 21.5 22.7 23.7 25.4

The heat treatment process

Annealing for stress relief Heated to 470~540℃ and hold 1~2 h. Cold down
annealing In vacuum heated to 750~900℃
Holding time 14 min~1h.
Cooling rate No more than 10 ℃/min cooled to 200 ℃

Coefficient of expansion

θ/℃ α1/10-6-1 θ/℃ α1/10-6-1
20~60 7.8 20~500 6.2
20~100 6.4 20~550 7.1
20~200 5.9 20~600 7.8
20~300 5.3 20~700 9.2
20~400 5.1 20~800 10.2
20~450 5.3 20~900 11.4

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

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 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:

fe ni alloy

      

low expansion alloys

      
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