Metal Housing/Flange: Temperature Range -200°C to +800°C

Component Specifications

Definition

A precision-engineered metal component designed as part of an electrical feedthrough system, serving as the primary structural interface between electrical conductors and the surrounding environment. It provides mechanical support for electrical terminals, ensures hermetic sealing to prevent fluid/gas ingress, maintains electrical insulation between conductors and the housing, and facilitates secure mounting to equipment or enclosures. The flange portion typically includes bolt patterns for attachment while the housing section contains insulated passages for conductor routing.

Working Principle

The metal housing/flange operates by creating a sealed mechanical barrier between different pressure or environmental zones while allowing electrical conductors to pass through. It maintains electrical isolation through insulating materials (ceramics, glass, or polymers) embedded within the metal structure, prevents leakage through precision-machined sealing surfaces, and distributes mechanical loads via its flange design. The component withstands thermal expansion differentials between metal and insulating materials while maintaining seal integrity.

Materials

Stainless steel (304, 316, 316L), aluminum alloys (6061-T6, 7075), nickel alloys (Inconel 625, Hastelloy C-276) with insulating materials including alumina ceramics (Al2O3 95-99.5%), glass (borosilicate, soda-lime), or high-temperature polymers (PEEK, PTFE). Surface treatments: passivation, electropolishing, or nickel plating for corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Leak Rate	<1×10⁻⁹ mbar·L/s
Voltage Rating	Up to 100 kV
Pressure Rating	Up to 1000 bar
Flange Standards	ANSI, DIN, JIS
Temperature Range	-200°C to +800°C
Dielectric Strength	>20 kV/mm
Insulation Resistance	>10¹² Ω

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 286-2, DIN 24960, IEC 60079, ASME B16.5

Parent Products

This component is used in the following industrial products

Electrical Feedthrough

A sealed component that allows electrical conductors to pass through the wall of a sealed enclosure while maintaining the enclosure's integrity.

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Engineering Analysis

Risks & Mitigation

Metal-to-ceramic joint failure due to thermal expansion mismatch
Stress corrosion cracking in chloride environments
Electrical tracking across insulation surfaces
Seal degradation at extreme temperatures
Galvanic corrosion in mixed-material assemblies

FMEA Triads

Trigger: Thermal cycling exceeding design limits
Failure: Cracking at metal-ceramic interface leading to loss of hermetic seal
Mitigation: Implement thermal stress analysis during design, use graded seals or compliant layers, specify operating temperature ranges, and conduct thermal cycle testing

Trigger: Improper installation torque
Failure: Flange distortion or insulator cracking causing electrical failure
Mitigation: Provide clear torque specifications, include torque-limiting features, train installation personnel, and use calibrated torque tools

Trigger: Corrosive environment exposure
Failure: Material degradation leading to loss of structural integrity or electrical leakage
Mitigation: Select corrosion-resistant materials (316L stainless steel, nickel alloys), apply protective coatings, specify environmental limits, and implement regular inspection protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm for critical sealing surfaces, ±0.1 mm for mounting features, Ra 0.8 μm maximum for sealing surfaces

Test Method

Helium leak testing per ISO 15848, high-potential testing per IEC 60243, thermal cycling per MIL-STD-810, salt spray testing per ASTM B117

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Metal Housing/Flange

Manufacturer profiles associated with Metal Housing/Flange.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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A durable marking strip used for terminal identification in motor terminal blocks to ensure proper electrical connections and safety compliance.

Gland Body

A gland body is the main housing component of an aluminum cable gland that provides mechanical protection and environmental sealing for electrical cables entering enclosures.

Frequently Asked Questions

What is the primary function of a metal housing/flange in electrical feedthroughs?

The primary functions are: providing structural support for electrical terminals, ensuring hermetic sealing between different environments, maintaining electrical insulation between conductors and housing, and enabling secure mounting to equipment.

What materials are commonly used for high-temperature applications?

For high-temperature applications (>500°C), nickel alloys like Inconel or Hastelloy are used with alumina ceramics (99.5% Al2O3) for insulation, capable of withstanding temperatures up to 800°C.

How is leak tightness verified in these components?

Leak tightness is verified through helium mass spectrometry testing per ISO 15848 standards, typically requiring leak rates below 1×10⁻⁹ mbar·L/s for hermetic applications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Metal Housing/Flange