Inner Metal Facing: Thickness Range 0.4-1.5mm, Width 600-1200mm

Component Specifications

Definition

The inner metal facing is a critical component of insulated wall panel systems, serving as the interior structural and finishing layer. Typically manufactured from galvanized steel, aluminum, or stainless steel, it works in conjunction with insulation cores and outer facings to create thermally efficient, durable building envelopes. This component provides mechanical strength, contributes to fire rating performance, offers corrosion resistance, and serves as the finished interior surface in industrial facilities, warehouses, cold storage units, and clean rooms.

Working Principle

The inner metal facing functions as a structural membrane that distributes loads across the panel system while providing a continuous interior surface. It works on the principle of composite action with the insulation core, where the metal facing provides tensile strength and the insulation provides compressive resistance. The facing also acts as a vapor barrier when properly sealed, preventing moisture migration into the insulation. In fire-rated assemblies, it contributes to fire resistance by protecting the insulation and maintaining structural integrity under elevated temperatures.

Materials

Galvanized steel (G90 coating, 0.4-1.2mm thickness), Aluminum alloys (3000 or 5000 series, 0.5-1.5mm thickness), Stainless steel (304 or 316 grade, 0.5-1.0mm thickness), Pre-painted coatings (polyester, PVDF, or epoxy finishes, 20-25μm thickness)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	600-1200mm
Length	Up to 16m
Fire Rating	Up to 120 minutes
Coating Weight	Z275-Z600 for galvanized
Surface Finish	Smooth, embossed, or profiled
Yield Strength	280-550 MPa
Thickness Range	0.4-1.5mm
Thermal Conductivity	45-50 W/m·K (steel)

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 9001, ISO 14001, EN 14509, ASTM C1289, DIN 4102, BS 476

Parent Products

This component is used in the following industrial products

Insulated Wall Panels

Insulated wall panels are structural components that create the enclosure of an insulated heating chamber, providing thermal insulation to maintain consistent internal temperatures while preventing heat loss to the environment.

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Engineering Analysis

Risks & Mitigation

Corrosion in humid environments
Thermal bridging if improperly installed
Fire spread through panel joints
Condensation formation on cold surfaces
Structural failure under excessive loads

FMEA Triads

Trigger: Inadequate corrosion protection
Failure: Panel degradation and reduced structural capacity
Mitigation: Use appropriate coating systems, ensure proper environmental classification, implement regular inspection protocols

Trigger: Poor joint sealing
Failure: Moisture ingress and insulation degradation
Mitigation: Use certified sealing systems, follow manufacturer installation guidelines, conduct pressure testing

Trigger: Incompatible materials
Failure: Galvanic corrosion at connections
Mitigation: Use isolation materials between dissimilar metals, follow material compatibility charts

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1mm for flatness, ±2mm for dimensional accuracy, ±0.1mm for thickness variation

Test Method

ASTM E84 for surface burning characteristics, ASTM E119 for fire resistance, ASTM B117 for salt spray corrosion testing, EN 14509 for load-bearing capacity

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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Manufacturers of Inner Metal Facing

Manufacturer profiles associated with Inner Metal Facing.

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Frequently Asked Questions

What is the primary function of inner metal facing in insulated wall panels?

The inner metal facing provides structural integrity, fire resistance, vapor barrier properties, and serves as the finished interior surface in insulated wall panel systems.

How do I select the appropriate material for inner metal facing?

Material selection depends on environmental conditions (corrosion risk), fire rating requirements, structural loads, hygiene requirements (for food/pharma), and budget. Galvanized steel is most common for general industrial use, aluminum for corrosive environments, and stainless steel for high-hygiene applications.

What are the key installation considerations for inner metal facing?

Proper sealing of joints, compatibility with panel framing systems, thermal expansion accommodation, fire stopping at penetrations, and ensuring continuous vapor barrier integrity are critical installation considerations.

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.

Inner Metal Facing