Shanghai Tankii Alloy Material Co.,Ltd
Shanghai Tankii Alloy Material Co.,Ltd First Quality, Sincere Service
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4j6 Vacovit426 Carpenter426 Ni42cr6 Fe Ni Alloy Fenicr Glass Sealed Alloy Wire
4 j6, 4 j47, 4 j49 at 20 ~ 400 degrees Celsius temperature range, with the expansion coefficient of similar soft glass, used for matching with corresponding soft glass sealing.This kind of alloy containing chromium, after oxidation treatment, the alloy surface generated very dense oxide film, combined with matrix and firm, and soft glass and invasive good.Therefore, to get the sealing side of high strength.Is an important sealing structure in electric vacuum industry material.
Chemical Composition in %, Invar
| brand | Chemical composition | |||||||||
| Ni | Cr | Fe | C | P | Mn | B | Al | Si | S | |
| ≤ | ||||||||||
| 4j6 | 41.5~42.5 | 5.4~6.3 | Bal | 0.05 | 0.02 | 0.25 | - | 0.2 | 0.3 | 0.02 |
| 4j47 | 46.8~47.8 | 0.8~1.4 | Bal | 0.05 | 0.02 | 0.40 | - | - | 0.3 | 0.02 |
| 4j49 | 46.0~48.0 | 5.0~6.0 | Bal | 0.05 | 0.02 | 0.40 | 0.02 | - | 0.3 | 0.02 |
Basic physical constants and mechanical properties of the alloy:
| brand | Density g / cm3 | resistivity | Curie point |
| 4j6 | 8.15 | 0.92 | 270 |
| 4j47 | 8.19 | 0.55 | 400 |
| 4j49 | 8.18 | 0.90 | 340 |
| Typical expansion character(10 -6 / ºC ) | ||||||||
| Temperature range | 20~100 | 20~200 | 20~300 | 20~400 | 20~500 | 20~400 | 20~550 | 20~600 |
| Expansion coefficient | 6.8 | 7.0 | 7.7 | 9.7 | 11.7 | 3.2 | 11.7 | 12.2 |
| Varieties | Specifications mm | Precision alloy | Resistance Alloys for electrical heating | Super alloy | Welding wire | Corrosion resistant alloy | |
| Rods | hot rolling rods | Φ8~38mm | available | available | available | ||
| Cold-drawn rods | ≤50mm | available | available | available | |||
| Forged rods | Φ38~350mm | available | available | available | |||
| Wires | Round wires | Φ0.3~8mm | available | available | available | available | available |
| Non-circle wires | Negotiation | available | available | available | |||
| Strips | Cold rolling | 0.15~4×200mm | available | available | available | available | |
| Hot rolling | 4~22×200mm | available | available | available | available | ||
