ISO 8442-3:1997

Overview

ISO 8442-3:1997 - Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 3: Requirements for silver-plated table and decorative holloware specifies material, construction, performance and testing requirements for silver‑plated tableware and decorative holloware intended for use at or on the dining table. It covers a wide range of items (jugs, trays, tea/coffee pots, tureens, candlesticks, vases, trophies, etc.) made principally from base metals and finished with a silver coating. The standard focuses on safety, durability and suitability for food contact rather than design or size.

Key topics and technical requirements

• Scope & materials: Applies to silver‑plated holloware made from brass, copper, nickel‑silver, pewter and stainless steel; silver coatings must be at least 98.5% Ag. It does not apply to items made entirely of precious metals, ceramics or glass.
• Silver coating classes & thickness:
  • Three quality classes (First, Second, Third) with specified average thicknesses for functional and non‑functional surfaces (e.g., First class table holloware functional = 15 μm, non‑functional = 3 μm).
  • Local thickness must be ≥ 60% of the average; measurement methods referenced include ISO 1463, ISO 2177, ISO 3497, ISO 3543.
• Construction & finish: Surfaces must be free of cracks, burrs and gaps > 0.4 mm; seams watertight unless design requires otherwise.
• Lacquered products: If lacquer is present, requirements include resistance to dishwashing (50 cycles), scratching (Annex C) and UV (Annex D).
• Performance tests (Normative annexes C–K): Methods for resistance to scratching, UV, twisting, popping, load strength of vessels, strength of attachments, pouring behavior, handle temperature and leakage, and adhesion (heat/quench test: 250 °C ± 10 °C for 30 min ± 5 min, then quench).
• Performance criteria: Limits for deformation, popping, attachment strength, stability (clearance limits by item width), pouring without dribbling, handle temperatures, and adhesion of plating.

Applications and who uses this standard

• Manufacturers and finishers of silver‑plated tableware and decorative holloware - to design, plate and certify products.
• Quality assurance and test laboratories - to perform mandated thickness, adhesion and mechanical performance tests.
• Procurement and hospitality sectors - to specify durable, food‑safe silver‑plated items.
• Regulatory bodies and importers - for compliance with food contact and durability requirements (references EC Directives 89/109 and 90/128 are noted).

Related standards

• Other parts of ISO 8442 (Parts 1, 2, 4…8) covering cutlery, stainless steel/silver‑plated cutlery, gold‑plated items, etc.
• Measurement and testing standards: ISO 1463, ISO 2177, ISO 3497, ISO 3543, and ISO 4481 (nomenclature).
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