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 |