Dilver P1 Alloy is a vacuum melted, iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Extensive quality controls are employed in the manufacture of this alloy to ensure uniform physical and mechanical properties for ease in deep drawing, coining, stamping and machining.
Dilver P1 alloy tube has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide use in application where high reliability is a necessity. In power tubes, microwave tubes, transistors, diodes, inter-grated circuits and has been used for the flat pack and the dual-in-line package.
Parameter
Cross Reference
| Russia | USA | UK | Japan | France | Germany |
| 29HK | Kovar | Nilo K | - | Dilver P0 | Vacon 12 |
| 29HK-ВИ | Rodar Teachallony Glass 29-17 | Teleaseal | - | Dilver P1 | Silvar |
Typical chemistry
| C | P | S | Mn | Si | Cu | Cr | Mo | Ni | Co | Fe |
| ≤ | ||||||||||
| 0.03 | 0.020 | 0.020 | 0.50 | 0.30 | 0.20 | 0.20 | 0.20 | 28.5-29.5 | 16.8-17.8 | Balance |
Physical Properties
| Specific gravity | 8.36 | |
| Density | lb/cu in | 0.302 |
| kg/cu m | 8359 | |
| Thermal conductivity | Btu-in/ft²/hr/°F | 120 |
| W/m-K | 17.3 | |
| Curie temperature | °F | 815 |
| °C | 435 | |
| Melting Point | °F | 2640 |
| °C | 1450 | |
| Modulus of elasticity | psi x 10(6) | 20 |
| MPa x 10(3) | 138 | |
| Electrical resistivity | ohm-cir mil/ft | 294 |
| microhm-mm | 490 |
Mechanical Property
| Tensile Strength | Ksi MPa | 75 518 |
| Yield Strength | Ksi MPa | 40 276 |
| Elongation | % in 2 in | 30 |
| Typical Hardness Ann | Rockwell | HRB80 |
| Modulus of Elasticity | Mpsi KMPa | 30 207 |
Average Coefficient of Linear Expansion
| Heat Treatment of the Samples | Average Coefficient of Linear Expansion | ||
| 20～300℃ | 20～400℃ | 20～450°C | |
| Heat to temperature of 900±20℃ in the hydrogen, hold for 1h; re-heat to 1100±20℃, hold for 15 min.; cooled to 200℃ at a rate less than 5℃/min | 4.6 t o 5.2 | 5.1 to 5.5 | |
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1. High-qulity product
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With advanced equipments: VIMF, Induction Furnace, ESR Furnace ect.
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40,000㎡ production base.
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A good assortment of alloy to choose.
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Tailor a suitable transport plan.
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Contact
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