 |
|
|
|
I'm Online Chat Now
Certification
Fe-42Ni Alloy Strip 4J42 | Ultra-Thin Precision Strip | Controlled Oxidation Layer | Hermetic Packaging & Sensor Seals
|
|
Product Details:
Payment & Shipping Terms:
|
Detailed Product Description
| Material: | Invar Alloy | Surface: | Bright |
|---|---|---|---|
| Color: | Oxidization | ||
| Highlight: | Fe-42Ni alloy ultra-thin precision strip,4J42 alloy controlled oxidation layer,low expansion alloy hermetic packaging |
||
Fe-42Ni Alloy Strip 4J42 | Ultra-Thin Precision Strip
Fe-42Ni Alloy Strip 4J42 | Ultra-Thin Precision Strip | Controlled Oxidation Layer | Hermetic Packaging & Sensor Seals
Ohmalloy Material Co., Ltd is a high-tech enterprise specializing in manufacturing various alloys including high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy, and thermocouple alloy.
We maintain a complete production line from melting, surface cleaning, rolling and slitting, with comprehensive testing equipment to meet all technical requirements from customers. Our products are widely used in heating equipment, steel mills, mining, electrical equipment, food machinery, automotive industry, and aerospace applications.
Our products are popular in domestic markets and exported worldwide. Our company aims to be the world's highest-quality alloy producer, continuously developing advanced alloy strip technology to serve customers and contribute to a greener future.
OhmAlloy-4J42 (Expansion Alloy)
Common Names: 42H Glass Sealing 42, Nilo42, N42, FeNi42
4J42 alloy is primarily composed of iron and nickel elements, characterized by a fixed coefficient of expansion. The thermal expansion coefficient and Curie point increase with higher nickel content. This alloy is widely used as structural sealing material in the electric vacuum industry.
Chemical Composition (%)
| Element | Content | Element | Content | Element | Content | Element | Content |
|---|---|---|---|---|---|---|---|
| Ni | 41.5~42.5 | Fe | Bal. | Co | - | Si | ≤0.3 |
| Mo | - | Cu | - | Cr | - | Mn | ≤0.8 |
| C | ≤0.05 | P | ≤0.02 | S | ≤0.02 | Al | ≤0.1 |
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 8.12 |
| Electrical resistivity at 20℃ (Ωmm²/m) | 0.61 |
| Thermal conductivity, λ/ W/(m*℃) | 14.6 |
| Curie point Tc/ ℃ | 360 |
| Elastic Modulus, E/ Gpa | 147 |
Coefficient of Expansion
| Temperature Range θ/℃ | α1/10⁻⁶℃⁻¹ | Temperature Range θ/℃ | α1/10⁻⁶℃⁻¹ |
|---|---|---|---|
| 20~100 | 5.6 | 20~400 | 5.9 |
| 20~200 | 4.9 | 20~450 | 6.9 |
| 20~300 | 4.8 | 20~500 | 7.8 |
| 20~350 | 4.95 | 20~600 | 9.2 |
Mechanical Properties
| Tensile Strength (Mpa) | Elongation (%) |
|---|---|
| 490 | 35 |
Heat Treatment Process
| Process | Parameters |
|---|---|
| Annealing | Heated to 900 ±20℃ in hydrogen atmosphere |
| Holding time | 1 hour |
| Cooling | Cooling rate not more than 5℃/min to below 200℃ |
Available Forms & Dimensions
| Alloy Name | Type | Dimensions |
|---|---|---|
| OhmAlloy-4J42 | Wire | D= 0.1~8mm |
| OhmAlloy-4J42 | Strip | W= 5~250mm | T= 0.1mm |
| OhmAlloy-4J42 | Foil | W= 10~100mm | T= 0.01~0.1 |
| OhmAlloy-4J42 | Bar | Dia= 8~100mm | L= 50~1000 |
Frequently Asked Questions
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 stock, for spool wire we can produce 1 spool (about 2-3kg), and for coil wire, 25kg minimum.
How can you pay for small sample amount?
We accept wire transfer for sample amounts.
Customer doesn't have express account. How will we arrange delivery for sample order?
Just provide your address information, we will check the express cost, and you can arrange the express cost together with sample value.
What are your payment terms?
We accept LC and T/T payment terms, depending on delivery and total amount. We can discuss details after receiving your requirements.
Do you provide free samples?
If you need several meters and we have stock of your size, we can provide samples with customer bearing the international express cost.
How do you guarantee the quality?
We have QC personnel responsible for tracking and monitoring the entire production process, and we welcome customer testing.
What are your working hours?
We respond to emails, phone calls, and online chat tools within 24 hours, including holidays.
Contact Details
Ohmalloy Material Co.,Ltd
Contact Person: Mr. Qiu
Tel: +8613795230939
Send your inquiry directly to us
More Low Expansion Alloys
-
Invar Fe-Ni36 4J36 Low Expansion Iron Nickel Alloy 1.2 ppm°C Anti Corrosion
-
4J29 Kovar FeNi29Co17 Glass Sealing Low Expansion Alloys
-
Kovar Low Expansion Alloys 4J29 Strip Glass - To - Metal Seal For Light Bulbs
-
20mm X 1.5mm Kovar Seamless Alloy Tube | Low CTE Matched to Borosilicate Glass for Hermetic Sealing
-
Near-Zero CTE Invar 4J36 Plate (UNS K93600)Precision Metrology and Cryogenic Applications
-
Alloy 42 FeNi42 Sealing Strip for Ceramic-to-Metal Glass Sealing