Materials and articles in contact with foodstuffs. Cutlery and table holloware. Part 7: Specification for table cutlery made of silver, other precious metals and their alloys (ISO 8442-7:2000)
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This European Standard specifies material and perfomance reqirements for table cutlery made of silver, other precious metals and their alloys (knives with stainless steel blades, forks, spoons, carving sets, ladles and other pieces). It does not include requirements for design, size, type of finish, blade flexibility, or similar characteristics which are matters of personal choice or which can be readily assessed by the purchaser at the point of sale. No sampling provisions are included in this standard, the requirements specified are applicable for each and every item produced.
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Sisällysluettelo
Foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 General
4.2 Metals
4.3 Non-metals
5 Construction
5.1 Alignment, uniformity and absence of defects
5.2 Hollow handles
5.3 Knife edges
6 Precious metal-plating
6.1 Hardness of hard gold coatings
6.2 Adhesion of precious metal coatings
6.3 Fineness of precious metal coatings
7 Performance
7.1 Resistance to corrosion
7.2 Strength
7.3 Hardness of knife blades
8 Marking and labelling
Annex A Method of test for adhesion of precious metal coating (normative)
Annex B Method of test for corrosion resistance of knife blades (normative)
Annex C Test method for strength of knives with martensitic stainless steel blades (normative)
EN 10088-1:1995 Stainless steels - Part 1: List of stainless steels
EN 1904:2000 Precious metals - The finenesses of solders used with precious metal jewellery alloys
ISO 4481:1977 Cutlery and flatware -- Nomenclature
EN 10088-1:1995 Stainless steels - Part 1: List of stainless steels
EN 1904:2000 Precious metals - The finenesses of solders used with precious metal jewellery alloys
ISO 4481:1977 Cutlery and flatware -- Nomenclature
ISO 6508:1986 Metallic materials -- Hardness test -- Rockwell test (scales A - B - C - D - E - F - G - H - K)