Manufacturer, Supplier & Exporter of Kovar Ferrule Fittings

Kovar Ferrule Fittings are precision-engineered components made from a specialized nickel-cobalt ferrous alloy known for its controlled thermal expansion properties. These fittings are used primarily in applications where metal-to-glass or ceramic sealing is required, such as in vacuum systems, electronic packages, or hermetic sealing systems. Kovar's unique expansion coefficient matches that of glass and ceramics, making it indispensable in electrical, instrumentation, and scientific industries..

Riddhi Siddhi Impex is a trusted and leading manufacturer, stockist, and domestic supplier of Kovar Ferrule Fittings in India. With years of metallurgical experience and a strong infrastructure, the company provides high-quality ferrule fittings in various configurations such as double ferrule, single ferrule, elbows, tees, reducers, bulkheads, and unions. These fittings are fabricated under stringent quality standards to ensure dimensional accuracy, pressure retention, and leak-proof operation.

The outstanding feature of Kovar alloy (UNS K94610) is its ability to maintain stability under extreme thermal conditions due to its low and consistent coefficient of thermal expansion. This makes Kovar Ferrule Fittings ideal for vacuum tubes, x-ray tubes, electronic devices, and aerospace sensors where thermal mismatches between metal and non-metal components can lead to seal failure or leakage.

IAs a Kovar Ferrule Fittings Domestic Supplier, Riddhi Siddhi Impex has a strong footprint in major cities like Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, and Vadodara. These hubs, being central to India's aerospace, electronics, and instrumentation industries, demand fittings that perform under precision-sensitive environments, and Riddhi Siddhi Impex meets that demand with high-grade Kovar components.

In industrial cities like Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, and Varanasi, where infrastructure for precision equipment is on the rise, Riddhi Siddhi Impex has emerged as a reliable partner for timely delivery and technical support for Kovar ferrule fittings. These cities represent growing sectors in medical devices, scientific research, and high-vacuum technology, making Kovar fittings a necessity.

Kovar Ferrule Fittings – Technical Specifications & Properties

Specifications

Property	Details
Material	Kovar (Nickel-Cobalt-Iron Alloy)
UNS	K94610
Size Range	1/8” to 2” OD
Form	Single Ferrule, Double Ferrule, Elbows, Tees, Bulkheads, Reducers, Unions
Application	Glass-to-metal seals, Vacuum systems, Electronics, Aerospace Sensors

Chemical Composition (%)

Element	Content (%)
Nickel (Ni)	29.0
Cobalt (Co)	17.0
Iron (Fe)	Balance
Carbon (C)	0.05 max
Silicon (Si)	0.2 max
Manganese (Mn)	0.3 max

Mechanical Properties

Property	Value	Unit
Density	8.36	g/cm³
Tensile Strength	520	MPa
Yield Strength	415	MPa
Elongation	30	%
Coefficient of Expansion	5 × 10⁻⁶	/°C (20–200°C)

Standard Dimension Chart

Tube OD (inches)	Fitting OD (mm)	Length (mm)	Wall Thickness (mm)
1/8"	6	10	1.0
1/4"	8	14	1.2
3/8"	10	16	1.5
1/2"	12	18	1.6
3/4"	16	22	2.0

Equivalent Grades and Standards

Standard	Grade
UNS	K94610
ASTM	F15
DIN	1.3981
Other	Alloy 29-17

Other Ferrule Fitting Types

Type	Description
Single Ferrule	One-piece fitting for compact installations
Double Ferrule	Two-piece ferrule for better sealing and grip
Elbows / Tees / Crosses	For directional changes and multi-port piping
Reducers / Adapters	Connects different pipe sizes or types

Riddhi Siddhi Impex ensures its Kovar Ferrule Fittings undergo rigorous testing for mechanical strength, expansion behavior, surface finish, and metallurgical integrity. Every product is supported with material test certificates (MTC), third-party inspections, and technical documentation upon request. This commitment to quality ensures long-term performance in critical applications like nuclear instrumentation, aerospace electronics, and satellite systems..

Frequently Asked Questions (FAQs)

Q1: What is Kovar used for in ferrule fittings?

A1: Kovar is used for its matched thermal expansion with glass and ceramics, making it ideal for hermetic seals in electronic and aerospace applications.

Q2: Are Kovar fittings corrosion resistant?

A2: Kovar has limited corrosion resistance and is typically used in sealed or inert environments. For improved corrosion resistance, surface coating or plating may be used.

Q3: Can Kovar ferrule fittings be custom-machined?

A3: Yes, Riddhi Siddhi Impex offers custom sizes and shapes based on drawings or application needs.

Q4: Do you supply Kovar ferrule fittings across India?

A4: Yes, we are a domestic supplier delivering to all major Indian cities including Mumbai, Delhi, Hyderabad, Chennai, Pune, Bengaluru, and others.