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Grade: Kovar,ASTM F15, Nilo-k, UNS K94610(FeNi29Co17),Chinese4J29, DIN 17745,S.E.W.385,Werkstoff Nr.1.3981 |
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| the chemical composition of Kovar(%) | ||||||||||
| C | p | S | Mn | Si | Cu | Cr | Mo | Ni | Co | Fe |
| Not more than (≤) | ||||||||||
| 0.03 | 0.020 | 0.020 | 0.5 | 0.30 | 0.20 | 0.20 | 0.20 | 28.5~ 29.5 | 16.8~ 17.8 | Balance |
Notes: 1.The content of Al,Mg,Zr and Ti should be no more than 0.10%,the total content should be no more than 0.20%.Otherwise ,the supplier's PO or contract shall indicate clearly. 2.Under condition that the everage coefficient of linear expanion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range. | ||||||||||
Status Code | Status | Tensile strength , N/mm2 |
R 1/4I 1/2I 3/4I I | Soft state 1/4 Hard 1/2 Hard 3/4 Hard Hard | <585 585-725 655-795 725-860 >860 |
| Status Code | Status | Tensile strength , N/mm2 |
R 1/4I 1/2I 3/4I I | Soft state 1/4 Hard 1/2 Hard 3/4 Hard Hard | <570 520-630 590-700 600-770 >700 |
| Alloy Grade | Specimen heat treatment system | The average linear expansion coefficienta , 10-6/℃ | ||
| 20-300℃ | 20-400℃ | 20-450℃ | ||
| Kovar | Heated to temperature of 900± 20℃ in the hydrogen,hold for 1h;re-heat to 1100±20℃,hold for 15min;cooled to 200℃ at a rete less than 5℃. | ---------------- | 4.6-5.2 | 5.1-5.5* |
Alloy Grade | The average linear expansion coefficient a, 10-6/℃ | |||||||
| 20-200℃ | 20-300℃ | 20-400℃ | 20-450℃ | 20-500℃ | 20-600℃ | 20-700℃ | 20-800℃ | |
| Kovar | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
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| Precision alloy Click To Enter |
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| High temperature alloy Click To Enter |
| Corrosion resistant alloy Click To Enter |
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| Nickel alloy wirespray wire Click To Enter |
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| Cold pier with high temperature alloy wire Click To Enter |
| Nickel copper alloy Click To Enter |
| Design & Produce Click To Enter |
Q1: Sample |
A1: Provide free sample, customers undertake shipping cost or freight collect. |
Q2: Visit factory |
A2:Welcome to our factory at any time. |
| Q3: Complaint solving process |
A3: Find your salesman—Salesman provide solution (If it's our responsibility, we will resend substitutes or return money or provide discount for your next order, etc.; If it's shipping company's responsibility, we also will help you until the problem is resolved.) |
| Q4: Delivery time |
A4: 3~30working days after confirming the payment. If the order is urgently, we will push our workshop finish in advance. |
| Q5: Payment? |
| A5: T/T, Western Union, L/C, Paypal, etc. |