Kovar Kovar Alloy High Precision Alloy

Product Description
Also known as Rodar, Kovar is a registered trademark that refers to a low expansion alloy that is composed of iron, nickel, cobalt and trace amounts of the elements manganese, silicone and carbon. Kovar was specifically formulated as a sealing alloy for glass and ceramic materials (specifically for compatibility with the thermal expansion characteristics of borosilicate glass).



The alloy is first melted using Vacuum Induction Melting (VIM) techniques. A secondary melt operation, Electro Slag Remelt (ESR), is then employed to further remove impurities and improve overall homogeneity.
Commerical Trdae NameASTM F15, NILO K, Pernifer 2918, Rodar and Dilver P1MaterialIron-Nickel-cobalt AlloySpecificationASTM F15Thermal Expansion4.6 to 5.2 at (30 to 400℃)Surface FinishCold-FinishEdge FinishNo DamageMeltingVIM + ESR MeltingApplicationhard glass to metal sealsRelated Specifications& Registered NamesKovar©
Nicoseal©
Nicosel©
Rodar©
Telcoseal©
Sealvar©
Alloy 29-17 ©
Nilo K ©
Dilver ©
Pernifer 29-18 ©UNS K94610
ASTM F 15
AMS 7726
AMS 7727
AMS 7728
MIL-I-23011 class 1.
Werkstoff Nr. 1.3981
DIN 17745
AFNOR NF A54-301
S.E.W. 385FORMS OF SUPPLYRODDia.20 to 280mm,Length3000mm,MaxSurface Finish: Black,De-scaling & Ground SurfaceSTRIP/SHEETT0.1 to 3.0mm ,width300mm,MaxTemper Name : Hard / AnnealedPLATET3.0 to 40.0mm,Width1000mm,MaxSurface Finish: Black / BrightSTRIP TOLERANCETolerance ,Thick±0.03mm
Tolerance ,Width±0.2mmWhy Choose Us26+ Years Specialize In High-Precision Alloy Manufacturing
Over 40000Sq.m Workshop And 156 Employees. Amount Of 45 Are Engineers,1000 Tons High Precision & High Temperature Alloys Annual Yearly.Marketed In China's New Stock Market Since 2016,Stock No. 836660
Product DatasheetChemical Composition (Weight,%)Ni28.5-29.5Co16.8-17.8Si,Max0.20Mn,Max0.50C,Max0.04Al,Max0.10Mg,Max0.10Zr,Max0.10Ti,Max0.10Cu,Max0.20Cr,Max0.20Mo,Max0.20FeBalancePhysical PropertiesDensity,lb/cu in0.302Specific Gravity8.36Curie Temp,°C435Melting Point,°C1449Electrical Resistivity,mm2/m49Thermal Conductivity,BTU-in/sq. ft-hr-120Specific Heat ,ppm/°C (25°C to 450°F)5.3Machanical Property (Cold-Rolled Strip)Temper DesignationTemper NameTensile Strength,MPaAAnnealed<570B1/4 Hard520-630C1/2 Hard690-700D3/4 Hard600-770EHard>700Hardness of Deep Stamping StripTemper DesignationSize/Thick,mmHardness,HV
Deep Stamping>2.5≤170≤2.5≤165Coefficient of Linear Expansion ,μ m/m•°C
Thermal Expansion Test InstrumentThe Process
5T ESR Furnace1.5T VIM Furnace
Annealing Workshop
Cold Work Workshop
Annealing Process
Cold-Rolling Processabout Us
XI'AN GANGYAN SPECIAL ALLOY CORPORATION (XAGY)Specialized in manufacturing Nickel alloys & Cobalt alloys for 25+ years,with a company mission to provide a high quality, reliable source for precision alloys, high temperature alloys and stainless steels in both pilot processing and mass production. We are professionally manufacturing materials with unique features, which are then used in aerospace, military, electronics, marine, petroleum and petrochemical industries. Now our company has formally marketed in China's new stock market, stock No. 836660.base on "Quality-oriented, Leading Technology, Continuous Improvement, Customer Satisfaction", we believe XAGY Inc can be your best supplier.



Test Equipment
Thermal Expansion Instrument
GE-Phasor Detector
Portable Spectrograph
Hardness Testing Instrument
Tensile Testing Instrument
Impactor
The Quality control team has 18 members, mainly responsible for the analysis and detection of all raw materials and finished products in the factory, analysis and testing items such as physics, chemistry, materials, mechanics, appearance and dimensions ,etc.





Warehouse
Alloy raw materials Like Cobalt, Nickel ,Chromium & ETC.are purchased from large-scale state-owned company, quality assurance, storage capacity up to 200 tons -300 tons, guaranteed enough regular size products in stock . Using ERP system to manage the inventory.product availability and request a QUOTE!
Certificate
ISO9001 Approved Since 2005
Military Products Supplier certificate & 6 New Patent

Mill Certificate & Rohs report with goodsExhibitionWire Dusseldorf (Germany)

once every two year ,Messe Dusseldorf
metal Week (Korea)

Every Year, Seoul City
EMC ShangHai (China)

Every Year , Shanghai city
important Notice1. Material Specification
Chemical composition,Physical and Mechanical properties will be engineered according to specific customer requirements.Therefore chemical composition,physical and mechanical properties might be different to values listed in this document.
Information about product characteristics or applicability of materials are shown only for informative purposes.2. Sample Policy

Kovar alloy are available in many shapes and dimensions,supplying semi-finished products in forms of Strip,plate & Rods.The samples are big enough (typically about 200mm in length for strip or plate) to get an understanding of the material characteristics, meanwhile custom-made sample order available ! small quantity accepted.
3. Payment Terms

30% T/T in advance ,balance before shippment.
4. Who you talking to
Mr. Paul (Designation :Foreign Trade Manager)
WeChat & Phone No: +86 (0)13669288752 (24 Hours)
Skype: alloynickel
Tel: +86 29 3366 9103 ( 08:30-17:30,Beijing Time. Mr.Paul ,Excellent Engilsh & Mandarin)
Fax: +86 29 3369 8670
Email: supportsalesATxagy.cn
Http:// www.alloynickel.com