Home > Materials > Machining Kovar (Fe-Ni-Co Alloy): Speeds & Feeds, Tooling & Best Practices Machining Kovar (Fe-Ni-Co Alloy): Speeds & Feeds, Tooling & Best Practices Technical machining guide for Kovar (Fe-Ni-Co Alloy) (Controlled-Expansion Hermetic Alloy): optimal cutting speeds (45 - 80 m/min), feeds (0.05 - 0.12 mm/tooth), hardness (150-180 HB), and precision manufacturing practices.
Engineering Specifications & Parameters Chip Load (fz) 0.05 - 0.12 mm/tooth Material Grade Kovar (Fe-Ni-Co Alloy) Material Hardness 150-180 HB Cutting Speed (Vc) 45 - 80 m/min Alloy Classification Controlled-Expansion Hermetic Alloy Primary Applications Hermetic glass-to-metal and ceramic-to-metal vacuum feedthro...
Material Properties & Machinability Profile
Kovar (Fe-Ni-Co Alloy) is classified as a Controlled-Expansion Hermetic Alloy widely specified for mission-critical components requiring Hermetic glass-to-metal and ceramic-to-metal vacuum feedthrough headers, military microwave packages, and laser tubes..
Engineering Kinematics & Cutting Parameters
Material Hardness : 150-180 HB.Recommended Cutting Speed ($V_c$) : 45 - 80 m/min with dedicated substrate coatings.Chip Load ($f_z$) : Maintained between 0.05 - 0.12 mm/tooth to prevent tool rubbing or excessive mechanical shock.Machinability Challenge : Matches thermal expansion curves of borosilicate glass from -80°C to 450°C; gummy machining requires continuous pressurized coolant.Tooling Strategy : Employs high-pressure flood coolant (>= 30 bar) and micro-grain carbide or specialized inserts with positive rake geometries.
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Frequently Asked Questions What cutting speed is recommended for Kovar (Fe-Ni-Co Alloy)? Optimal cutting speeds range from 45 - 80 m/min depending on roughing vs finishing passes and machine tool rigidity.
How does UCAN ROBOT manage tool wear when cutting Kovar (Fe-Ni-Co Alloy)? We implement in-process tool monitoring, rigid toolholder systems, and high-pressure through-spindle coolant to dissipate cutting heat immediately.
