Aluminium Furniture Inspection in India

Aluminium furniture inspection in India

An inspection of aluminium (aluminum) furniture checks castings for porosity and cracks, welds on extruded frames, coating thickness and adhesion, fasteners, stability and packing. It matters because aluminium is bought for outdoor use: a hidden blow hole, the wrong screw or a coat that is thin at the edges shows up as corrosion or breakage after one season outside.

Last reviewed 14 Oct 2026

Typical materials

Sand- or gravity-cast aluminium, extruded tube and profile, aluminium sheet

Where it's made in India

Moradabad metal craft cluster, plus foundries and fabrication shops elsewhere

Key rules

EU GPSR with EN 581 for outdoor seating and tables; REACH; Prop 65; UK fire rules for cushions

Typical AQL

General II; critical 0, major 2.5, minor 4.0

How aluminium furniture is made in India

Aluminium furniture from India is made in two quite different ways, and the inspection changes with each.

Cast aluminium. Molten metal is poured into sand moulds or metal dies to make ornate chair backs, table bases, legs and decorative panels. Parts are fettled (excess metal cut and ground off), joined by welding or bolting, and finished. Moradabad, long known for brassware, now also works in aluminium, iron and stainless steel, according to the Uttar Pradesh One District One Product programme.
Extruded aluminium. Bought-in tube and profile is cut, bent and TIG-welded into frames for dining chairs, loungers and tables. These frames often carry rope, woven strands, slats or sling fabric.

Finishes are powder coat, anodising, or a polished or "antique" raw metal finish protected by lacquer. Powder coat on aluminium needs a proper chemical conversion pre-treatment to stick well outdoors; see outdoor furniture inspection for the other weathering checks. Many small foundries and coaters work as subcontractors, so ask where each process happens.

Aluminium does not rust like steel, but it does corrode. Under a damaged coat it forms white powdery oxide and thread-like filiform corrosion. When it touches steel screws or brackets in the presence of moisture, galvanic corrosion eats the aluminium around the fixing.

What we check on aluminium furniture

Check	How it is checked	What fails
Casting soundness	Close visual check of cast faces, especially thick sections and where arms and legs join; light tap to listen for dull, cracked sound	Blow holes, porosity, shrinkage cracks, cold shuts, putty-filled holes hidden under coating
Welds on extruded frames	Visual check of every accessible weld; hand load on seats, backs and arms	Cracks, incomplete fusion, burn-through on thin tube, welds ground so far that the joint is weak
Coating thickness	Eddy-current gauge, the method for non-conductive coats on non-magnetic metals (ISO 2360)	Readings below your minimum; thin coat on edges, inside corners and the underside of castings
Coating adhesion	Cross-cut on a hidden area or test panel (ISO 2409)	Coat lifting at the cuts, a sign of poor pre-treatment
Fasteners	Check screws, bolts and inserts against the bill of materials; magnet test for plain steel	Plain or zinc-plated steel where stainless was specified, missing nylon washers
Stability and strength	Seat and stand on a flat surface, rock test, hand load on stacking chairs	Rocking, tipping backwards, flex at joints
Drainage	Check tubes and hollow castings for drain holes	Sealed hollow parts that hold rainwater
Weight and wall thickness	Weigh pieces; measure tube wall at cut ends where visible	Pieces lighter than the approved sample, a sign of thinner tube or castings

Outdoor durability tests, such as salt spray (ISO 9227) and EN 581 strength tests, are done by a lab. We can pull samples for an accredited lab.

Common aluminium furniture defects and how they are classed

Defect	Typical class	Why
Crack in a cast leg, arm or base	Critical	Cast aluminium breaks suddenly under load
Cracked or incomplete weld on a seat frame	Critical	Collapse risk
Sharp fettling edge or casting flash	Critical or major	Cut risk; class depends on where it is
Porosity or filled blow holes on a visible face	Major	Coating fails early over pores
Steel fasteners against aluminium where stainless was specified	Major	Galvanic corrosion outdoors
Coat below specified thickness	Major	Filiform corrosion and chalking
Small scratches, uneven antique finish	Minor	Cosmetic

Market rules that apply

European Union. The GPSR requires a safe product, traceability and an EU responsible person. Buyers usually show safety with lab reports to EN 581: part 1 covers general safety, part 2 outdoor seating and part 3 outdoor tables. EN 581-2 does not cover ageing from light, heat and moisture, so specify weathering tests separately if you need them.
Chemicals. REACH applies to coatings and lacquers. For California, check whether a Prop 65 warning is needed for the coating or alloy.
United States. Painted or powder-coated furniture for consumer use falls under the 90 ppm lead-in-paint limit in 16 CFR 1303. See CPSC and CPSIA rules.
Cushions. If chairs ship with cushions, the UK fire rules can apply to garden furniture that is suitable for use in a home. California's TB 117-2013 exempts cushions for outdoor use only; see TB 117-2013.

Packing, transit and loading risks

Aluminium is light, which tempts factories to pack it lightly. The common transit damage is:

Bent legs and dents on thin extruded tube when cartons are stacked high or chairs are nested without spacers.
Coat rubbed through where stacked chairs touch each other. Agree felt or foam spacers between nested chairs.
Snapped cast parts if a heavy cast base moves inside its carton. Castings need to be blocked so they cannot shift.
Marks on polished finishes from fingerprints and newsprint. Workers should wear gloves, and polished parts should be wrapped in clean, acid-free material.

Light cartons also mean many pieces per container, so count and stacking are worth checking during container loading supervision.

What to put in your purchase order

Cast or extruded for each part, alloy if you have a preference, tube sizes and minimum wall thickness.
Target piece weight with a tolerance, taken from the approved sample.
Finish: pre-treatment, powder type (outdoor grade), colour, gloss and minimum dry-film thickness in microns.
Fasteners: stainless steel grade, nylon washers where metals meet.
Drain holes in hollow parts; no sealed hollow sections.
Lab tests needed: EN 581, salt spray hours, UV or weathering, and who pays.
Packing: spacers between nested chairs, blocking for castings, maximum stack height.

To add these checks to an order, book an inspection.

Sources

Frequently asked questions

How do you measure coating thickness on aluminium?

With an eddy-current gauge, because aluminium is not magnetic. It reads through powder coat or anodising without damage. The inspector takes several readings per sampled piece and records them against your specified minimum.

Can you see porosity in a casting through the powder coat?

Often, yes. Pores and filled blow holes show as pin holes, craters or bumps in the coat, especially on thick parts and flat faces. Internal porosity that does not reach the surface cannot be seen; strength tests in a lab cover that risk.

Why do you check the screws on aluminium furniture?

Plain or zinc-plated steel screws in aluminium corrode the aluminium around them once the furniture is outside. If your specification says stainless steel, the inspector checks the screws in the box and in the frame match it.

Is cast aluminium furniture covered by EN 581?

EN 581 covers outdoor seating and tables for camping, domestic and contract use, whatever the material. It is a voluntary standard, but EU buyers commonly use it to show the furniture is safe under the GPSR.

Does a polished aluminium finish need special care in packing?

Yes. Polished and lacquered aluminium marks easily from fingerprints, newsprint and rubbing. We check that workers handle it with gloves and that each piece is wrapped in clean material before it goes in the carton.