Expansion Alloy

Product Description and Application Alloy 40 is also known as 4J40 Alloy 40 is Fe-Ni-Co ternary alloy and its curie point is above 300℃. The alloy has a low expansion coefficient in the temperature range of -20 ~ 300℃, and the transformation from austenite (γ) to martensite (M) does not occur until -60℃. The alloy is mainly used in the manufacture of highly precise instrument parts and electronic devices requiring sizes in the temperature range of -50 to 300℃ Process

Product Description and Application Alloy 44 is also known as 4J44 Alloy 44 has a certain coefficient of linear thermal expansion over a certain temperature range. It is used to make iron-nickel-cobalt alloy strip, bar, plate and pipe with hard glass matching sealing. It is suitable for electric vacuum devices such as transmitting tube, oscillation tube, ignition tube, transistor, tube seal plug and relay shell. Process Performance and Requirements Product Fusion Process

Product Description and Application Alloy47 is also known as 4J47 Alloy47 has an expansion coefficient near soft glass in the temperature scale of 20 ~ 400℃, which is used for matching and sealing with the corresponding soft glass. This kind of alloy contains chromium that the alloy surface will form a very dense oxide film after oxidation treatment, then strong binding with matrix and good wettability with soft glass. Therefore, high strength sealing surfaces can be obtained

Product Description and Application Alloy 50 is something like this: 4J52 Alloy 50 has excellent comprehensive properties in the temperature range from -253 ℃ to 700℃. The yield strength below 650℃ ranks the first among deformed superalloys, and has excellent performance, machining performance and welding performance. It can manufacture all kinds of parts with complex shapes, and has been widely used in aerospace, nuclear energy, petroleum industry and extrusion mold in the

Product Description and Application Alloy42 Fe-Ni constant expansion alloy is a series of constant expansion alloys which can be matched with soft glass and ceramic with different expansion coefficient in a given temperature range by adjusting the nickel content. The expansion coefficient and Curie point of Alloy42 Fe-Ni constant expansion alloy would increase with the nickel content increase . The alloy is a widely used sealing structure material in the electric vacuum

Product Description and Application Alloy32 is also also known as 4J32, Super Invar Alloy32 alloy is called Super-Invar alloy. Its expansion coefficient is lower than 4J36 alloy in the range of -60 ~ 80℃, but its microstructure stability is worse than 4J36 alloy at low temperature. The alloy is mainly used in the manufacture of highly precise instrument parts requiring sizes within the range of ambient temperature variations. Process Performance and Requirements Product