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Description
Kovar tube NiFe29 Alloy Seamless Tube- OD27mmxWall1mm UALLOY is good at produce 0.5~15mm precision mini tubes, some of parts tolerance less than 0.005mm. UALLOY according ISO9001 and TS16949 management system to reference, parts according customer ’ s normative documents to implement. Now our...
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Nickel Alloy Tube- Kovar,Invar,Inconel seamless and welded technic
UALLOY is good at produce 0.5~15mm precision mini tubes, some of parts tolerance less than 0.005mm.
UALLOY according ISO9001 and TS16949 management system to reference, parts according customer’s normative documents to implement.
Now our main raw material as follows: NICKEL (N6,N4,N200,N201),KOVAR (KV-2,KV-6,FeNiCo2918,4J29),NIFE (NiFe47,NiFe42,4J50,4J42,4J36),STAINLESS STREEL(SUS304,SUS316,SUS316L,SUS321),NICKEL CHROME( Ni90Cr10,Ni80Cr20,INCONEL600 etc.),OTHER (MENEL,Ti etc.). These parts mainly used in: Electric vacuum, Backlight, Glass hermetic packing, Li-battery, Medical tool, Fiber and communication, Automotive safe systems, heater etc. Many parts export to America and Europe.
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 |
