Thank You for Your Attention on Beiye!
4J44 has a certain linear expansion coefficient from -60℃ to 400℃, a key property among controlled expansion alloys. This predictable thermal behavior underscores its role within the broader category of expansion alloys, ensuring dimensional stability for demanding applications.
Sealing alloys for hard glasses
Transmitting tube
Oscillation tube
Ignitron
Transistor
Relay shell
| Ni | 34.2~35.2 | Fe | bal. |
Co | 19.5~20.5 |
| 25℃-300℃ | 4.3~5.1 |
25℃-400℃ | 4.6~5.2 |
Tensile Strength | ||||
Soft | 1/4Hard | 1/2Hard | 3/4Hard | Hard |
<570 MPa (82.7 ksi) | 520～630 MPa (75.4~91.4 ksi) | 590～700 MPa (85.6~101.5 ksi) | 600～770 MPa (87.0~111.7 ksi) | >700 MPa (>101.5ksi) |
| Hardness | Thickness | Deep-drawing State | ||
>0.2~2.5mm | ≤165HV | |||
>2.5mm | ≤170HV | |||
Gain Size | Deep-drawing State: ≥Level 7 | |||
| Density | 8.12 g/cm3 (0.293 lb/in3) |
| Resistivity | 55 µΩ•cm |
Thermal conduction | 20 W/K |
Elastic modulus | 132 Gpa |
Contact Beiye today to learn more about our 4J44 alloy and the full capabilities of our precision alloy and supply solutions!
