8.36g/Cm3 Kovar Rod Kovar Alloy K Uns K94610 With Good Low Temperature Structure Stability

Product Details:
Place of Origin: CHINA
Brand Name: JINXING
Certification: ISO 9001
Model Number: Kovar Rod
Payment & Shipping Terms:
Minimum Order Quantity: 50KGS
Price: 15~50USD/kg
Packaging Details: Plywood Case
Delivery Time: 25 work days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 100000kgs/M

Detail Information

Material: Kovar Alloy K UNS K94610 Surface: Pickled , Polished
Standard: ASTM F15 Heat Treatment: Solution Annealed
Size: Customized Application: Glass Sealing
Density: 8.36g/cm3 Melting Point: 1450C
High Light:

ni based superalloys


nickel based superalloys

Product Description

Kovar Rod Alloy K / K94610 / ASTM F15 


Kovar rod is made up of 29% nickel, 17% cobalt, .2% silicon, .3% manganese and 53.5% iron. Kovar is known for its low coefficient of thermal expansion. Kovar end uses are usually glass sealing in the electronics industry.


Alloy Name Trade Name UNS # British Spec American Spec German Spec French Spec
Alloy K Kovar
Nilo K
UNS K94610   ASTM F15
AMS 7726
AMS 7727
MIL-I-23011C Class 1
1.3981 AFNOR NF A54-30


  • Description


ASTM F15 , UNS K94610,  Werkstoff Nr 1.3981 , DIN 17745 ,  MIL-I23011 Class 1, AFNOR NF A54-301, S.E.W 385


Heat Treatment:

For the performance test sample of expansion coefficient and low temperature tissue stability specified in the standard, heat it to 900 ℃± 20 ℃ in hydrogen atmosphere for 1h, then heat it to 1100 ℃± 20 ℃ for 15min, and cool it to below 200 ℃ at the speed of no more than 5 ℃ / min.



Material :

Russia USA England Japan Franch Germany
29HK kovar Nilo K KV-1 Dilvar P0 Vacon 12
29HK-B Rodar
Techallony Glasseal 29-17
Teleaseal KV-2
Dilver P1 Silvar


Content Composition %

C P S Mn Si Cu Cr Mo Ni Co Fe
Less than
0.03 0.02 0.02 0.5 0.3 0.2 0.2 0.2 28.5-29.5 16.8-17.8 Rest

Physical properties

Density g/cm3 8.25
Curie Point 430
Resistivity μ· m 0.48
Tensile strength Mpa Cold state  
Annealing 520
Yield strength Mpa Cold state  
Annealing 330
Elongation % Cold state  
annealing 30


Type Size/mm Deliver State
Bar 5.0-8.0 Cold Drawn
8.0-30.0 Hot rolling
30.0-180.0 Hot forging
Plate 3.5-30.0 Hot rolling
30.0-40.0 Hot forging
Strip 0.2-3.5 Cold rolling
Flat wire 0.5-5.0 Hot rolling
Round wire 0.1-5.0 Cold Drawn
Capillary OD8.0-1.0,ID0.1-8.0 Cold Drawn
Pipe OD120-8.0, ID8.0-129 Cold drawn



The linear expansion coefficient of the kovar alloy is similar to that of borosilicate glass at 20-450 ℃, the Curie point is higher, and the alloy has good low temperature structure stability. The oxide film of the alloy is compact and can be well infiltrated by glass. It does not interact with mercury and is suitable for use in instruments containing mercury discharge. It is the main sealing structure material of electric vacuum device.


8.36g/Cm3 Kovar Rod Kovar Alloy K Uns K94610 With Good Low Temperature Structure Stability 0 

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