| Processes | Lead Time | Finishing Options | Tolerance |
|---|---|---|---|
| CNC Mill CNC Lathe |
As fast as 7 days | Vibratory Tumbling, Media Blasting, Powdercoating | With drawing: as low as +/- 0.005 mm No drawing: ISO 2768 medium |
Invar 36 is a nickel-iron alloy with excellent dimensional stability at a wide range of temperatures. The ’36’ stands for the alloy containing 36% nickel and has a super low coefficient of expansion.
Invar 36
Yield Strength (tensile) | Elongation at Break | Hardness | Density |
|---|---|---|---|
40,000 PSI | 30% | Rockwell B90 | 8.05 g/cm^3 0.29lb / in^3 |
Invae 36 is very similar to most grades of steels/stainless steel in terms of overall appearance. Invar can be media blasted or tumbled to achieve a multitude of surface finishes. Additionally, powder coating can be applied to achieve more matte/glossy colors.
Min Wall Thickness | Min End Mill Size | Min Drill Size | Max Part Size | Undercuts | Radii : Depth |
|---|---|---|---|---|---|
0.5 mm | 0.8 mm (0.03 in) | 0.5 mm (0.02 in) | 1200 x 500 x 152 mm [x,y,z] (mill) 152 x 394 mm [d,h] (lathe) | Square profile, full radius, dovetail profiles | Depth must not exceed 12x drill bit diameter. For end mills, depth must not exceed 10x tool diameter. |
Cost Saving Tip
To reduce costs, limit the number of part setups, the number of inspection dimensions or tight tolerances, and deep pockets with small radii. If surface finish is not a concern, you may design your part to be made from the closest stock thickness, specified in a drawing.
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