Invar 36 is a unique and specialized alloy known for its low coefficient of thermal expansion (CTE), making it particularly valuable in applications where dimensional stability over a wide temperature range is crucial. The alloy is composed of approximately 36% nickel and 64% iron, and its name "Invar" is derived from "invariable" due to its minimal expansion or contraction under varying temperature conditions.
Invar 36 wires are a popular form of this alloy and find applications in various industries, especially those requiring precision and stability in dimensions. One of the primary characteristics that make Invar 36 wires desirable is their ability to maintain a nearly constant length over a wide temperature range. This makes them suitable for applications where dimensional changes due to temperature fluctuations need to be minimized.
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One of the key applications of Invar 36 wires is in the manufacturing of bimetallic thermostats. These thermostats are used in a variety of devices, including household appliances, automotive components, and industrial machinery, where precise temperature control is essential. The low CTE of Invar 36 helps ensure that the bimetallic strip responds accurately to temperature changes without undergoing significant deformation.
Invar 36 wires are also utilized in aerospace and aviation industries. The alloy's stability and resistance to thermal expansion make it ideal for components such as sensors, antennas, and other critical parts of spacecraft and aircraft. The reliability of Invar 36 contributes to the overall performance and longevity of these aerospace applications.
In addition to its mechanical properties, Invar 36 offers good weldability and machinability, enhancing its versatility in manufacturing processes. The alloy can be easily fabricated into various forms, including wires, sheets, and plates, to meet the specific requirements of different applications.
ASTM / ASME
ANSI/AWCI – 01 -1992 and ASTM E 2016-11 and RRW 360
Cut Lengths: 0.125" to 72"
No Limit on Spooled Lengths
0.0004" to 0.040"
10 microns to 1.0 mm
Other Sizes on Request
Tempers range from dead soft annealed to ultra spring temper
Filler Wire, Flat Wire, Coil Wire, Electrode Wire, Welding Wire, Wire mesh, Knitted Wire Mesh, Wire Rope, Wire Bobbin, Mig Wire, Tig Wire, Spring Wire, Square Wire
Spool, Reel, Coil, Bobbin, Carrier Custom packaging provided from as low as 1lb to 200lb tapered plastics
Alloy | DN-Trade Name | WERKSTOFF NR. | UNS-No. | ASTM Specification | DIN Specification |
Ni 36* | Dilaton 36 | 1.3912 | K93603 | ASTM F1684 | DIN 17745 / SEW 385 |
Grade | C | Mn | P | S | Si | Ni | Cr | Fe | W | Co |
Invar 36 | .15 max | .60 max | .006 max | .004 max | .40 max | 36.0 nom | .25 max | Bal | - | .50 max |
ASTM F-1684 |
MIL 1-23011 CL 7
|
AMS 1-23011 CL 7 |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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