Changzhou DLX Alloy Co., Ltd.
| Payment Terms | L/C, T/T, Western Union, MoneyGram |
| Supply Ability | 300 tons per month |
| Delivery Time | 7-21 days |
| Packaging Details | Wooden Case&PP tube |
| Certificate | ISO9001 |
| Shape | wire |
| Ni (Min) | 28.5 |
| size | customized |
| color | nickel,silver |
| Ultimate Strength (≥ MPa): | 570 |
| Elongation (≥ %) | 30 % |
| Application: | glass to metal sealing |
| Brand Name: | DLX |
| Brand Name | DLX |
| Model Number | 4j29(kovar) |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union, MoneyGram | Supply Ability | 300 tons per month |
| Delivery Time | 7-21 days | Packaging Details | Wooden Case&PP tube |
| Certificate | ISO9001 | Shape | wire |
| Ni (Min) | 28.5 | size | customized |
| color | nickel,silver | Ultimate Strength (≥ MPa): | 570 |
| Elongation (≥ %) | 30 % | Application: | glass to metal sealing |
| Brand Name: | DLX | Brand Name | DLX |
| Model Number | 4j29(kovar) | Place of Origin | China |
| High Light | 1.3981 Nickel Iron Alloy ，4j29 Iron Alloy ，K94610 Nickel Iron Alloy | ||
Precision Alloy Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Precision Alloy Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Precision Alloy its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.
Precision Alloy Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This Precision alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, Precision Alloy has been used for the flat pack and the dual-in-line package.
Basic performance: Precision Alloy is divided into low-expansion alloy and fixed-expansion alloy, the latter is also known as sealing alloy. Precision Alloy Expansion alloy besides has the specific thermal expansion coefficient, according to the different USES also requires a good sealing property, weldability and corrosion resistance, machinability and cutting, and in the use of expansion characteristics caused by the temperature range there is no obvious change of phase transformation, Precision Alloy product is commonly bar, sheet, strip, wire and tube and so on.
Precision Alloy Expansion alloy applications: Precision Alloy is widely used in glass, metal and ceramic sealing in avionics and instruments, electric vacuum industry and other electronic devices, electric light source and other fields.
Chemical Composition
| Grade | C% | P% | S% | Mn% | Si% | Cu% | Cr% | Mo% | Ni% | Co% | Fe% |
| Kovar | Max 0.03 | Max 0.020 | Max 0.020 | Max 0.50 | Max 0.30 | Max 0.20 | Max 0.20 | Max 0.20 | 28.5-29.5 | 16.8-17.8 | Bal. |
Specifications
| Grade | UNS | Werkstoff Nr. |
| Kovar | K94610 | 1.3981 |
Physical Properties
| Grade | Density | Melting Point |
| Kovar | 8.17 g/cm3 | 1449°C |
Mechanical Properties
| Grade | Tensile Strength N/mm² | ||||
| Soft | 1/4 Hard | 1/2 Hard | 3/4 Hard | Full Hard | |
| Kovar Strip | <570 | 520-630 | 590-700 | 600-770 | >700 |
| Kovar Wire | <585 | 585-725 | 655-795 | 725-860 | >860 |
Coefficient of Expansion
| Alloy | Linear Coefficient of Thermal Expansion a,10-6/°C | |||||||
| 20-200°C | 20-300°C | 20-400°C | 20-450°C | 20-500°C | 20-600°C | 20-700°C | 20-800°C | |
| Kovar | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
Company Details
Business Type:
Manufacturer,Seller
Year Established:
2002
Total Annual:
1000000-120000000+
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ... Changzhou DLX Alloy Co., Ltd. was established in 2002 and has passed ISO9001 international quality management system certification and SGS certification.We initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now ...
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