Welcome to Wuxi Jinhantong Supply Chain Co., Ltd.
Expansion Alloys
Category： Electric heating alloy
Expansion Alloys
Basic Properties: Expansion alloys are divided into low-expansion alloys and constant-expansion alloys, the latter also known as sealing alloys. In addition to having a specific thermal expansion coefficient, expansion alloys are required to have good sealing performance, weldability, corrosion resistance, machinability, and free-cutting properties depending on their intended use. They must not undergo phase changes that significantly alter their expansion characteristics within the operating temperature range. These products are generally available in the form of rods, plates, strips, wires, and tubes.
| Typical grade | Product form | Implementation Standard | Supply Status | Specification (mm) | Length/Width (mm) |
| 4J29 4J36 4J42 4J47 4J50 | Filament material | GB/T 37797-2019 GB/T 38938-2020 GB/T 38960-2020 GB/T 15014-2008 GB/T 14985-2007 GB/T 13297-2021 GB/T 15018-1994 | Hard State (Y) Semi-hard state (Y2) Soft State (M) | φ0.8-8.5 | — |
| Billet | Forging bar Hot-rolled bar Car light stick | φ20-400 | Length: 300–6000 | ||
| Hot-rolled sheet metal | Hot-rolled condition Pickled state | φ5.0—80.0 | Standard board width: 10–1200 | ||
| Cold-rolled sheet metal | Hard State (Y) Semi-hard state (Y2) Soft State (M) | δ0.2–4.0 | Standard board width: 100–1200 | ||
| Cold-rolled strip steel | δ0.05-3.0 | Bandwidth: 40–450 |
Application areas
Glass, metal and ceramic sealing in fields related to aviation electrical appliance and instrument, vacuum electric industry and other electronic devices, and electric light source.
Keywords： Expansion Alloys
Previous page： None
Next page： Soft Magnetic Alloys
Our Production Line
Continuous bright annealing furnace
1.5-ton vacuum induction melting furnace manufactured by American Consarccorporation
B+S precision lengthways cutter sets
American l2S 20-roll Sengemeier cold rolling mill
Four-high and six-high reversing cold rolling mill
5-ton electro-hydraulic hammer
Intermediate frequency induction furnace
1.5-ton vacuum induction melting furnace manufactured by American Consarccorporation