The execution standard of Expanded alloy 4J44 Plate is GB/T 15018-1994.
Expanded alloy 4J44 Plate has a certain linear expansion coefficient in the temperature range of -60 ℃ ~ +400 ℃, and can be matched and firmly sealed with hard glass; Expanded alloy 4J44 Plate is suitable for launch tubes, oscillation tubes, ignition tubes, transistors and Tube sealing plugs, relay shells and other electrical vacuum components.
Expanded alloy 4J44 Plate specifications: wire, ribbon, rod, plate, tube
Specifications | In stock, can be customized according to customer requirements |
Form | Plate,Strip,Bar,Wire |
Classification | Expanded alloy |
Grade | Ni | Co | Fe |
4J29 | 28.5~29.5 | 16.8~17.8 | Balance |
4J44 | 34.2~35.2 | 8.50~9.50 | Balance |
2）Mechanical behavior
Alloy grade | Sample processing | Average linear expansion coefficient ( a/10-6·K-1) | Condition (code) | Tensile strength(σ b/ MPa) | ||
20~300℃ | 20~400℃ | 20~450℃ | ||||
4J29 | Heat to 900±20℃ in a hydrogen atmosphere, hold for 1 hour, then heat to 1100±20℃, hold for 15 minutes, cool to below 200℃ at a speed of no more than 5℃/min and come out of the oven。 | - | 4.6~5.2 | 5.1~5.5 | Soft state (R) | ＜570 |
1/4 Hard state (1/4) | 520~630 | |||||
4J44 | 4.3~5.1 | 4.6~5.2 | - | 1/2 Hard state (1/2) | 590~700 | |
3/4 Hard state (3/4) | 600~700 | |||||
Hard state | ＞700 | |||||
Expanded alloy 4J44 Platehas a certain linear expansion coefficient in the temperature range of -60 ℃ ~ +400 ℃, and can be matched and firmly sealed with hard glass.
Theexpanded alloy 4J44 Plateis suitable for electric vacuum components such as transmitter tubes, oscillation tubes, ignition tubes, transistors, tube sealing plugs, relay shells, etc.
Expanded alloy 4J44 Plateis used to make iron-nickel-cobalt alloy strips, rods, plates, and pipes that are matched and sealed with hard glass.
Suitable for electric vacuum devices such as transmitter tubes, oscillation tubes, ignition tubes, transistors, tube sealing plugs, and relay shells.
It has a certain linear expansion coefficient in the temperature range of 20℃-450℃ and can be matched and firmly sealed with hard glass.
The manufacturing process of stainless steel and alloys involves multiple steps to transform raw materials into flat,rectangular sheets or plates made of stainless steel and alloys. Here are a few key steps for stainless steel and alloys:
Molten stainless steel and alloys are cast into large ingots or billets through a casting process.
During the hot rolling process,the thickness of the steel ingot is gradually reduced and elongated to form long strips or coils.
Annealing involves heating stainless steel and alloys to a specific temperature and then slowly cooling it.
Cold rolling is carried out through rolling mills to reduce thickness to meet customer specifications.
Wuxi Walmay Metal Co,Ltd is a comprehensive processing group of Alloy Steel、Forged Parts Fitting、Titanium Alloy、Stainless Steel、Special Welding Wireseries， and more than 800 specifications.
Our group has been engaged in the domestic and global market for more than ten years with rich steel experience and can offer professional advice for customers inapplications with different materials.
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Material Reliability Identification (PMI): Wuxi Walmay Metal can complete this testing in-house.
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