Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Price:
negotiable
MOQ:
20KG
Delivery Time:
7-10 days
Brand:
OHMALLOY
Product Description
OhmAlloy-4J50 (Expansion alloy)
(Common Name: 50H, N50, Vacovit 500, FeNi50)
4J50 alloy is mainly composed of iron, nickel elements. It is characterized with a fixed coefficient of expansion. Increase the thermal expansion coefficient and the Curie point with increase of nickel content.
4J50 alloy is widely used the structure of the sealing material in the electric vacuum industry.
Normal composition%
| Ni | 49.5~50.5 | Fe | Bal. | Co | 1.0 | Si | ≤0.3 |
| Mo | - | Cu | - | Cr | - | Mn | ≤0.8 |
| C | ≤0.05 | P | ≤0.02 | S | ≤0.02 | Al | ≤0.1 |
Typical Physical properties
| Density (g/cm3) | 8.21 |
| Electrical resistivity at 20℃(Ωmm2/m) | 0.44 |
| Thermal conductivity, λ/ W/(m*℃) | 16.7 |
| Curie point Tc/ ℃ | 500 |
| Elastic Modulus, E/ Gpa | 158 |
Coefficient of expansion
| θ/℃ | α1/10-6℃-1 | θ/℃ | α1/10-6℃-1 |
| 20~100 | 9.8 | 20~400 | 9.4 |
| 20~200 | 9.8 | 20~450 | 9.4 |
| 20~300 | 9.5 | 20~500 | 9.7 |
| 20~350 | 9.4 | 20~600 | 10.6 |
Typical Mechanical properties
| Tensile Strength | Elongation |
| Mpa | % |
| 490 | 35 |
| The heat treatment process | |
| Annealing | Heated to 900 ±20℃ in a hydrogen atmosphere |
| Holding time, h | 1 hour |
| cooling | With speed not more than 5 ℃ / min. cooling to below 200 ℃ |
Style of supply
| Alloys Name | Type | Dimension | ||
| OhmAlloy-4J50 | Wire | D= 0.1~8mm | ||
| OhmAlloy-4J50 | Strip | W= 5~250mm | T= 0.1mm | |
| OhmAlloy-4J50 | Foil | W= 10~100mm | T= 0.01~0.1 | |
| OhmAlloy-4J50 | Bar | Dia= 8~100mm | L= 50~1000 | |
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Ohmalloy Material Co.,Ltd
Location
Room 311, No.1211, Mudanjiang Road, Baoshan district, Shanghai
Contact Person
Qiu