Iron Nickel Cobalt Alloy Bar ASTM F15 kovar
| Brand Name |
Brilliance |
| Place of Origin |
China |
| Model Number |
BL-0008 |
| Type |
Nickel Bar |
| Application |
Precision Instruments |
| Ultimate Strength (≥ MPa) |
700 |
| Grade |
Iron-nickel-cobalt Alloy |
| Elongation (≥ %) |
32 |
| Powder Or Not |
Not Powder |
| Ni (Min) |
28.5-29.5% |
Product Features
Kovar alloy is a vacuum melted, iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Extensive quality controls are employed in the manufacture of this alloy to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and machining.
Our production process for Kovar 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 Name | ASTM F15, NILO K, Pernifer 2918, Rodar and Dilver P1 |
Material | Iron-Nickel-cobalt Alloy |
Specification | ASTM F15 |
Thermal Expansion
| 4.6 to 5.2 at (30 to 400 ℃) |
Surface Finish | Ground Surface |
Process | VIM +ESR Melting |
Application | hard glass to metal seals |
Related Specifications & Registered Names |
Kovar ©
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. 385 |
FORMS OF SUPPLY |
ROD | Dia.20 to 280mm,Length2000mm,Max | Surface Finish: Black, De-scaling & Ground Surface |
STRIP/SHEET | T0.1 to 3.0mm ,width300mm,Max | Temper Name : Hard / Annealed |
PLATE | T3.0 to 40.0mm,Width1000mm,Max | Surface Finish: Black / Bright |
Permissible Variations for Rod |
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Diameter Tolerance ±1.0mm | Diameter Tolerance :±0.5mm | Diameter Tolerance :±0.1mm |
Length Tolerance +5mm | Length Tolerance: +2.0mm | Length Tolerance: +1.0mm |
TABLE 1 Chemical Composition (Weight,%) |
Ni | 28.5-29.5 |
Co | 16.8-17.8 |
Si,Max | 0.20 |
Mn,Max | 0.50 |
C,Max | 0.04 |
Al,Max | 0.10 |
Mg,Max | 0.10 |
Zr,Max | 0.10 |
Ti,Max | 0.10 |
Cu,Max | 0.20 |
Cr,Max | 0.20 |
Mo,Max | 0.20 |
Fe | Balance |
TABLE 2 Physical Properties |
Density, lb/cu in | 0.302 |
Specific Gravity | 8.36 |
Curie Temp,°C | 435 |
Melting Point,°C | 1449 |
Electrical Resistivity,mm2/m | 49 |
Thermal Conductivity,BTU-in/sq. ft-hr- | 120 |
Specific Heat ,ppm/°C (25°C to 450°F) | 5.3 |
TABLE 3 Tensile Strength for Sheet & Strip |
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TABLE 4 Tensile Strength for Wire & Rod |
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TABLE 5 Average Linear Coefficient of Thermal Expansion |
30 to 400 ℃ | 4.6 to 5.2 µm/m -°C |
30 to 450 ℃ | 5.1 to 5.5 µm/m -°C |
TABLE 6 Machanical Property |
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