Product Details
Place of Origin: China
Brand Name: Tankii
Certification: ISO Rohs
Model Number: Kovar 4J29
Payment & Shipping Terms
Minimum Order Quantity: 100Kg
Packaging Details: Standard export wooden box packing.
Delivery Time: 15-25days
Payment Terms: T/T, L/C, D/P, Western Union, MoneyGram
Supply Ability: 50000 per month
Application: |
Industrial |
Color: |
Silver |
Hardness: |
HRC45-55 |
Heat Treatment: |
Annealing |
MOQ: |
1 Ton |
Material: |
Precision Alloy |
Packaging: |
Wooden Case |
Processing Technology: |
Forging |
Shape: |
Wire Strip Sheet Rod Bar Tube |
Size: |
Customized |
Surface Treatment: |
Polishing |
Tolerance: |
High Precision |
Application: |
Industrial |
Color: |
Silver |
Hardness: |
HRC45-55 |
Heat Treatment: |
Annealing |
MOQ: |
1 Ton |
Material: |
Precision Alloy |
Packaging: |
Wooden Case |
Processing Technology: |
Forging |
Shape: |
Wire Strip Sheet Rod Bar Tube |
Size: |
Customized |
Surface Treatment: |
Polishing |
Tolerance: |
High Precision |
Kovar (Alloy K) is a nickel-iron-cobalt controlled-expansion alloy containing 29% nickel. Its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics. Kovar (Alloy K) is used for glass-to-metal seals in applications requiring high reliability or resistance to thermal shock. Kovar (Alloy K) is used for high-power transmitting valves, transistor leads and headers, integrated-circuit lead frames, and photography flash bulbs.
| Kovar Chemical Composition (Basic Density 8.36) | |||||||||||||
| Weight % | Ni | Fe | Co | C | Mn | Si | Al | Cr | Mg | Zr | Ti | Cu | Mo |
| Alloy K Kovar |
29.0 | 53.0 | 17.0 | 0.04 max | 0.50 max | 0.20 | 0.10 max | 0.20 max | 0.10 max | 0.10 max | 0.10 max | 0.20 max | 0.20 max |
| Material | Condition | Yield Strength (0.1% Offset) | Tensile Strength | Elongation % | ||
| psi | MPa | psi | MPa | |||
| Alloy K Kovar |
Annealed | 49,000 | 340 | 75,000 | 520 | 42 |
Availability
Alloy K / Kovar is available (further details) in Bar, Rod, Tube, Sheet, Strip, Coil, Plate and Wire. For all stock availability contact Sales for further availability.
| Specifications UNS K94610 Werkstoff Nr 1.3981 DIN 17745 ASTM F 15 AMS 7726 Wire AMS 7727 Bars and Forgings AMS 7728 Sheet, Strip and Plate MIL-I-23011 class 1 AFNOR NF A54-301 S.E.W 385 DILVER P |
Registered Names Kovar ® Nicoseal ® Nicosel ® Rodar ® Telcoseal ® Sealvar ® Alloy 29-17 ® Nilo K ® Dilver ® Pernifer 29-18 ® |
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