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Kovar
Kovar material is UNS SAE AMS 7727E (2000) Iron-Nickel-Cobalt Alloy, Bars and Forgings, 53Fe - 29Ni - 17Co, Low Expansion, Glass Sealing Iron-Nickel-Cobalt Alloy, Bars and Forgings, 53Fe - 29Ni - 17Co, Low Expansion, Glass Sealing.
Chemical composition of Kovar, Kovar mechanical properties, Kovar datasheet, Kovar equivalent grade, Heat treatment and temperature process of Kovar.
Kovar property sheet
Kovar Spec.
| UNS SAE AMS 7727E (2000) Iron-Nickel-Cobalt Alloy, Bars and Forgings, 53Fe - 29Ni - 17Co, Low Expansion, Glass Sealing |
Chemical Composition of Kovar
| C: | Max | 0.04 |
| Si: | Max | 0.20 |
| Mn: | Max | 0.50 |
| Ni: | Max | 29.00 |
| Cr: | Max | 0.20 |
| Al: | Max | 0.10 |
| Cu: | Max | 0.20 |
| Ti: | Max | 0.10 |
| Fe: | Max | 53.00 |
| Mo: | Max | 0.20 |
| Co: | Max | 17.00 |
| W: | Max | Min |
| Mg: | Max | 0.10 |
| Zr: | Max | 0.10 |
Mechanical Properties of Kovar
| Rp0.2 (MPa) | 355 (≥) |
| Rm (MPa) | 335 (≥) |
| AKV (J) | 21 |
| A (%) | 43 |
| Z (%) | 33 |
| Hardness | HBW 312 |
Kovar shape and dimensions
| Kovar Round bar: | 1mm-800mm |
| Kovar Square bar: | 10mm * 10mm-600mm *600mm |
| Kovar Flat bar: | Thickness:8mm-800mm Width:10mm to 1500mm |
| Kovar Sheet or Plate: | Thickness:3mm-80mm Width:1.5mm to 1500mm |
| Kovar Strip or Coil: | Thickness:0.1mm-3mm Width:1.5mm-1500mm |
| Kovar Forgings: | Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes |
©Longhai Special Steel 2025
