kovar wire for sell
USD $25.00 - $39.00 /Kilogram
Min.Order:1 Kilogram
Xi'an Gangyan Special Alloy Co., Ltd.
Glass To Metal Seals ---KOVAR ALLOY
Kovar Alloy, also know as ASTM F-15, NILO K, Pernifer 2918, Rodar, and Dilvar P1 is a controlled expansion alloy. It is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular of the controlled expansion alloys for hermetic sealing applications. Kovar is produced to ensure good properties for machining and deep drawing, and is a porosity free product. You’ll find Kovar in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.
Kovar Alloy Chemistry
maximum % unless noted | |
Iron | Balance |
Nominal Nickel | 29% |
Nominal Cobalt | 17% |
Carbon | 0.02% |
Silicon | 0.20% |
Sulfur | -- |
Chromium | 0.20% |
Kovar Alloy Physical Properties
Density | lb/cu in | 0.302 |
Specific Gravity |
| 8.36 |
Curie Temp | °F / °C | 815/ 435 |
Melting Point | °F / °C | 2640/ 1449 |
Electrical Resistivity | Micro-ohm-cm / Micro-ohm-cm | 40/ 294 |
Thermal Conductivity | W/cm °C / BTU-in/sq. ft-hr- | 0.17/ 120 |
Specific Heat | Cal/g- °C / BTU/lbm- °F | 0.11/ 0.11 |
Thermal Expansion | ppm/°F (75°F to 842°F) / ppm/°C (25°C to 450°F) | 2.9/ 5.3 |
Kovar Alloy Mechanical Properties
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 |
Kovar Alloy Linear Coefficient of Thermal Expansion
Degree C |
| DegreeC |
|
30-100 | --- | 30-450 | 5.1 - 5.5 |
30-150 | --- | 30-475 | ---------- |
30-200 | 5.5 | 30-500 | 6.2 |
30-250 | --- | 30-525 | ---- |
30-300 | 5.1 | 30-550 | ----- |
30-325 | -- | 30-600 | 7.9 |
30-350 | ----- | 30-700 | 9.3 |
30-375 | ----- | 30-800 | 10.4 |
30-400 | 4.6 - 5.2 | 30-900 | 11.5 |
30-425 | ------- | 30-1000 | -- |
Specification
Kovar Specifications | ||
ASTM F-15/F-1466 | MIL 1-23011 CL 1 | AMS 1-23011 CL 1 |
According the characteristic of material ,suitable packing and follow China Customs regulations, or As buyer's request .
Delivery items are flexiable , Shipping, Air lift ,train , hight speed ground transportation ,ect
Power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments
1.We can tailoring your unique requirements with ASTM, UNS ,GOST, standards.
2.We can produce more people cannot produce products
3.Short Lead-time
4.Leading Edge Technology
5.Good quality control in production process, ISO9001:2008, SGS, CQC, approved.
6.Excellent quality and High cost of performance
7.Available in an extensive range of stock or custom size.
8.The whole process from raw material to finished products can be traced.
9.40000 square meters workshop, advanced facilities and test equipment .
1,Sample free
2, Faster delivery
3, Helpful staff
4, Quick response
6, Testing before shipping
7, We will reply you for your inquiry in 24 hours.
8, Advanced facilities
9. Technical support
10.No min order request
11.Technical Information
If you have a technical question relating to a Controlled Expansion, Electrical/Electronic Nickel, Soft Magnetic or Refractory application, or need assistance with a specific material, you can visit our web or email supportsales© Ask the Experts service here;
1.Q: How can I trust this factory ?
A: Our stock number is 836660(China new stock market), also you can visit our website . Our factory's License and certificate appear on the website.(License Number can check the aptitude of the factory on Chinese Gov web ,English version available )
2. Q: Is this factory far away from the port? Is this will take longer for delivery?
A: From Xi'an to any port in China with in one day, convenient transportation only can improve the delivery.
3. Q: Where is your factory located? How can I visit there?
A: Our factory is located in Xi'an, Shaanxi Province, China.
All our clients from all over the world, are warmly welcome to visit us! Free pick up !
4. Q: How can I get some samples?
A: We are honored to offer you samples.(sample will delivery as our stock size)
5.Q: How does your factory do regarding quality control?
A. Quality is priority. our factory have advanced facilities, High qualified technical personnel and technical support and always attach great importance to quality controlling from beginning to end. All requirements with ASTM, UNS, GOST standards.
6.Q Are you ISO 9001 approved ?
A:Yes,we have held ISO 9001 approval since 2000.
7.Q;How can I pay ?
A: Payment can be made by T/T, L/C, D/A, D/T ,Western Union .
8.What is your minimum order quantity?
A: We can manufactures from as small as few kilogram to your specification.
9.Q:What is your standard of the lead time ?
A: Typical manufacturing lead times are around three working weeks.
If you have an urgent requirement, we have an emergency manufacturing service(EMS)available .
10.Q:Do you offer testing services?
A:Yes ,we can offer test date for you. Although we are not certified by international authority, our equipment is regularly calibrated and certified and our staff are fully competent. We can carry out for you ,using our in-house equipment.
11.Q:Do you deliver worldwide ?
A: Precision alloy supplies customers world wide.by Air, Sea, Ground, We can despatch using your carrier account if you prefer. All products are packed suitably for transportation.
12.Q:Can you make to my specification/drawing ?
A:We do manufacture to individual specifications / drawings. Please send us your specification / drawing for our production team to confirm if we can meet your requirements.
13.Q: Who do I send my enquiry to?
A: Please send your enquiries to Supportsales©
14.Q: Who do I contact when progressing my order?
A: Send an e-mail titled Order Progress to Supportsales©
Xi'an GangYan Special Alloy Co,Ltd The factory is researching and producing precision alloy over 23 years , Worldwide Supply and 10000+ clients witness for you . |