NC4677 KOVAR
Kovar, also known as ASTM F 15 Alloy, is a controlled expansion alloy that is typically applied to high integrity glass and ceramic to metal seals, lids, lead frames and electronic package base.
Descriptions of KOVAR
Kovar, also known as ASTM F 15 Alloy, is a controlled expansion alloy that is typically applied to high integrity glass and ceramic to metal seals, lids, lead frames and electronic package base.
Kovar is made of nickel, cobalt and iron. This alloy is designed to adapt to computer, microwave, hydrid, semiconductor and space age technology demands, thus, making this an essential resource to the defense, aerospace and telecommunications industries.
Chemical Composition
The chemical composition of KOVAR is outlined in the following table.
| Element | Content (%) |
|---|---|
| Nickel, Ni | 29 |
| Cobalt, Co | 17 |
| Silicon, Si | 0.2 |
| Chromium, Cr | 0.2 |
| Carbon, C | 0.02 |
| Iron, Fe | Remainder |
Physical Properties
The physical properties of super alloy KOVAR are tabulated below.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.3 g/cm3 | 0.302 lb/in3 |
| Melting point | 1449°C | 2640°F |
Mechanical Properties
The following table shows mechanical properties of super alloy KOVAR.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 518 MPa | 75 ksi |
| Yield strength | 276 MPA | 40 ksi |
| Elongation | 30% | 30% |
| Hardness, (HRB) | 80 | 80 |
KOVAR Available Forms:
Foil, sheet, rod, plate, wire, tube, extrusions, forgings
Applications of KOVAR
KOVAR’s expansion properties are useful in Pyrex glasses as well as alumina ceramics, thus making this super alloy one of the popular controlled expansion alloys that can be adapted for hermetic sealing applications.
Super alloy KOVAR is also applied in the following:
- Glass sealing of metal components or lead wires, into hard glass or ceramic devices
- In applications where low expansion with temperature change is an essential characteristic e.g. integrated circuits packaging
- Scientific instruments
- Microwave tubes
- Hybrid packages
- Power tubes
- Transistors
- Diodes
Packaging of KOVAR
Our KOVAR is carefully handled to minimize damage during storage and transportation and to preserve the quality of the product in its original condition.
- Your Name (required)
- Your Email (required)
- Company Name (required)
-
Country (required)
United States
- United States
- Afghanistan
- Aland Islands
- Albania
- Algeria
- American Samoa
- Andorra
- Angola
- Anguilla
- Antarctica
- Antigua and Barbuda
- Argentina
- Armenia
- Aruba
- Australia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bermuda
- Bhutan
- Bolivia
- Bosnia and Herzegovina
- Botswana
- Bouvet Island
- Brazil
- British Indian Ocean Territory
- British Virgin Islands
- Brunei
- Bulgaria
- Burkina Faso
- Burundi
- Cambodia
- Cameroon
- Canada
- Cape Verde
- Cayman Islands
- Central African Republic
- Chad
- Chile
- China
- Christmas Island
- Cocos (Keeling) Islands
- Colombia
- Comoros
- Congo
- Cook Islands
- Costa Rica
- Croatia
- Cuba
- Cyprus
- Czech Republic
- Democratic Republic of Congo
- Denmark
- Disputed Territory
- Djibouti
- Dominica
- Dominican Republic
- East Timor
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Ethiopia
- Falkland Islands
- Faroe Islands
- Federated States of Micronesia
- Fiji
- Finland
- France
- French Guyana
- French Polynesia
- French Southern Territories
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Gibraltar
- Greece
- Greenland
- Grenada
- Guadeloupe
- Guam
- Guatemala
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Heard Island and Mcdonald Islands
- Honduras
- Hong Kong
- Hungary
- Iceland
- India
- Indonesia
- Iran
- Iraq
- Iraq-Saudi Arabia Neutral Zone
- Ireland
- Israel
- Italy
- Ivory Coast
- Jamaica
- Japan
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Kuwait
- Kyrgyzstan
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macau
- Macedonia
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Martinique
- Mauritania
- Mauritius
- Mayotte
- Mexico
- Moldova
- Monaco
- Mongolia
- Montenegro
- Montserrat
- Morocco
- Mozambique
- Myanmar
- Namibia
- Nauru
- Nepal
- Netherlands Antilles
- Netherlands
- New Caledonia
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Niue
- Norfolk Island
- North Korea
- Northern Mariana Islands
- Norway
- Oman
- Pakistan
- Palau
- Palestinian Territories
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Pitcairn Islands
- Poland
- Portugal
- Puerto Rico
- Qatar
- Reunion
- Romania
- Russia
- Rwanda
- Saint Helena and Dependencies
- Saint Kitts and Nevis
- Saint Lucia
- Saint Pierre and Miquelon
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Georgia and South Sandwich Islands
- South Korea
- Spain
- Spratly Islands
- Sri Lanka
- Sudan
- Suriname
- Svalbard and Jan Mayen
- Swaziland
- Sweden
- Switzerland
- Syria
- Taiwan
- Tajikistan
- Tanzania
- Thailand
- Togo
- Tokelau
- Tonga
- Trinidad and Tobago
- Tunisia
- Turkey
- Turkmenistan
- Turks And Caicos Islands
- Tuvalu
- US Virgin Islands
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- United States Minor Outlying Islands
- Uruguay
- Uzbekistan
- Vanuatu
- Vatican City
- Venezuela
- Vietnam
- Wallis and Futuna
- Western Sahara
- Yemen
- Zambia
- Zimbabwe
- Your Phone (Optional)
-
Metals (Optional)
Tantalum...
-
I would like to join the mailing list to receive updates from Advanced Refractory Metals.
- Notes (Optional)
-
Attachment (Optional)
No file chosen
-
