ISO 8442-2:1997 PDF

Materials and articles in contact with foodstuffs — Cutlery and table holloware — Part 2: Requirements for stainless steel and silver-plated cutlery

Название (английский):

ISO 8442-2:1997

Materials and articles in contact with foodstuffs — Cutlery and table holloware — Part 2: Requirements for stainless steel and silver-plated cutlery

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 17
Дата публикации:: 25 декабря 1997 г.
Издание:: ISO IS 8442 edition 1 version 1
ICS:: 67.250

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Описание (английский):

La présente norme prescrit les exigences afférentes aux matériaux constitutifs et aux performances des couverts de table (couteaux, fourchettes, cuillers, ustensiles à découper, louches, couverts pour enfants et autres articles utilisés pour le service), ainsi que des méthodes d'essai. La présente norme s'applique aux couverts en acier inoxydable, et aux couverts en maillechort ou en acier inoxydable revêtus d'argent. Elle ne concerne ni les couverts entièrement fabriqués en métaux précieux, aluminium, acier ordinaire, ni ceux entièrement fabriqués en maillechort. Elle ne traite pas non plus des couverts dorés ou chromés. Pour les couverts en métal argenté, trois épaisseurs minimales d'argent sont spécifiées.

Технические детали

Технический комитет: ISO/TC 186 - Cutlery and table and decorative metal hollow-ware
SKU: ISO 8442-2:1997

Abstract

Overview

ISO 8442-2:1997 specifies material, construction, performance and test requirements for stainless steel and silver‑plated cutlery intended to come into contact with food. It is Part 2 of the ISO 8442 series covering cutlery and table hollowware and complements other parts that address silver‑ or gold‑plated and precious‑metal items. The standard focuses on safety, durability and hygiene - not on aesthetic design or size.

Key topics and technical requirements

Scope and materials
- Applies to table cutlery (knives, forks, spoons, carving sets, ladles, children’s cutlery and serving pieces) made of stainless steel or silver‑plated nickel silver / stainless steel.
- Excludes items made wholly of precious metals, aluminium, non‑stainless steel, fully nickel silver, gold‑ or chrome‑plated cutlery.
Metal types and composition
- Specifies appropriate stainless steel families (austenitic, ferritic, martensitic) and nickel silver as base materials for plating.
Silver coating requirements
- Defines three classes of minimum average silver thickness (examples include values such as 30 µm, 12 µm and 10 µm) and requires minimum local thickness of at least 60% of the average on significant surfaces.
- Hard silver coatings: minimum hardness of 130 HV (after boiling water immersion).
- Adhesion: coatings must show no flaking/blistering after ball‑burnishing (40 min) - Annex E.
Performance tests
- Corrosion resistance (Annex C): limits on crack lengths and number/size of pits/intergranular corrosion (e.g., no transverse/longitudinal cracks >15 mm; pit area limits specified).
- Strength: martensitic knife blades and carving forks must resist cracking and excessive permanent deformation (Annex D). Spoons, forks and unsharpened knives limited to ≤1 mm permanent deflection under a specified load (0.7 N/mm or 100 N).
- Handle fastening: must resist pulling force (~180 N) and specified torques after immersion.
- Blade hardness: martensitic blades ≥48 HRC (carving knives ≥52 HRC).
Marking and labelling
- Each item must be indelibly marked with manufacturer identification and reference to the standard.
Normative test methods
- Annexes A–E contain methods for coating-thickness measurement (e.g., ISO 1463, ISO 2177), surface area, corrosion, strength and adhesion testing.

Practical applications and users

Manufacturers and designers of cutlery and table hollowware - to ensure product safety, durability and compliance.
Quality assurance teams and production control - for acceptance testing and production sampling.
Third‑party test laboratories and certification bodies - to perform the normative tests in Annexes A–E.
Procurement, importers and regulatory authorities - for conformity assessment and labeling requirements.
Retailers and hospitality buyers - to verify performance claims (e.g., silver thickness class, corrosion resistance).

Related standards and references

ISO 8442 series (Parts 1–8) - other parts cover preparation cutlery, silver/gold plating and precious metals.
Normative measurement/test methods referenced: ISO 1463, ISO 2177, ISO 3497, ISO 3543, ISO 4481, ISO 6508.
Relevant EU directives on materials in contact with food (noted in the standard).

Keywords: ISO 8442-2, stainless steel cutlery, silver-plated cutlery, cutlery standards, food contact materials, corrosion resistance, coating thickness, performance requirements.

Overview

Key topics and technical requirements

Scope and materials
- Applies to table cutlery (knives, forks, spoons, carving sets, ladles, children’s cutlery and serving pieces) made of stainless steel or silver‑plated nickel silver / stainless steel.
- Excludes items made wholly of precious metals, aluminium, non‑stainless steel, fully nickel silver, gold‑ or chrome‑plated cutlery.
Metal types and composition
- Specifies appropriate stainless steel families (austenitic, ferritic, martensitic) and nickel silver as base materials for plating.
Silver coating requirements
- Defines three classes of minimum average silver thickness (examples include values such as 30 µm, 12 µm and 10 µm) and requires minimum local thickness of at least 60% of the average on significant surfaces.
- Hard silver coatings: minimum hardness of 130 HV (after boiling water immersion).
- Adhesion: coatings must show no flaking/blistering after ball‑burnishing (40 min) - Annex E.
Performance tests
- Corrosion resistance (Annex C): limits on crack lengths and number/size of pits/intergranular corrosion (e.g., no transverse/longitudinal cracks >15 mm; pit area limits specified).
- Strength: martensitic knife blades and carving forks must resist cracking and excessive permanent deformation (Annex D). Spoons, forks and unsharpened knives limited to ≤1 mm permanent deflection under a specified load (0.7 N/mm or 100 N).
- Handle fastening: must resist pulling force (~180 N) and specified torques after immersion.
- Blade hardness: martensitic blades ≥48 HRC (carving knives ≥52 HRC).
Marking and labelling
- Each item must be indelibly marked with manufacturer identification and reference to the standard.
Normative test methods
- Annexes A–E contain methods for coating-thickness measurement (e.g., ISO 1463, ISO 2177), surface area, corrosion, strength and adhesion testing.

Practical applications and users

Manufacturers and designers of cutlery and table hollowware - to ensure product safety, durability and compliance.
Quality assurance teams and production control - for acceptance testing and production sampling.
Third‑party test laboratories and certification bodies - to perform the normative tests in Annexes A–E.
Procurement, importers and regulatory authorities - for conformity assessment and labeling requirements.
Retailers and hospitality buyers - to verify performance claims (e.g., silver thickness class, corrosion resistance).

Related standards and references

ISO 8442 series (Parts 1–8) - other parts cover preparation cutlery, silver/gold plating and precious metals.
Normative measurement/test methods referenced: ISO 1463, ISO 2177, ISO 3497, ISO 3543, ISO 4481, ISO 6508.
Relevant EU directives on materials in contact with food (noted in the standard).

Keywords: ISO 8442-2, stainless steel cutlery, silver-plated cutlery, cutlery standards, food contact materials, corrosion resistance, coating thickness, performance requirements.

ISO 8442-2:1997 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards and references

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards and references

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