This standard supersedes "National Food Safety Standard - Stainless Steel Products" (GB 9684-2011) and "Hygienic Standard for Aluminium-wares for Food Use" (GB 11333-1989).
Compared with the above-mentioned standards, this standard has the following main changes:
- the standard name was changed into " National Food Safety Standard -Food Contact Metal Materials and Articles";
- the scope was modified;
- terminologies and definitions were added;
- basic requirements were added;
- raw material requirements were added;
- physical and chemical indexes were modified;
- the requirements for migration test were added;
- special service requirements were added;
- the requirements for label identification were added.
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
中華人民共和國國家標準
GB 4806.9-2016
National Food Safety Standard -
Food Contact Metal Materials and Articles
食品安全國家標準
食品接觸用金屬材料及制品
1 Scope
This standard is applicable to food contact metal materials and articles.
2 Terminologies and Definitions
2.1 Food Contact Metal Materials and Articles
Various metal (including various metal coating and alloy) materials and articles which are expected or have been in contact with foodstuffs under normal service condition, hereafter referred to as "metal materials and articles".
2.2 Metal coating
A metal film layer formed on the surfaces of various solid materials or articles via plating technology.
2.3 Base metal
The material forming metal materials and articles, excluding surface coating and metal coating.
3 Basic Requirements
Metal materials and articles shall meet the requirements of GB 4806.1.
4 Technical Requirements
4.1 Raw material requirements
4.1.1 The base metal, metal coating and welding materials used for the food contact surfaces of metal materials and articles shall not cause harm to human health.
4.1.2 Such material compositions as base metal and coating shall be consistent with the identified compositions of the product or the corresponding compositions marked.
4.1.3 Austenite stainless steel, Austentite · ferrite stainless steel and ferrite stainless steel shall be selected for the main part of the stainless steel food containers and table wares as well as food production and management tools and equipment; martensite stainless steel materials may also be adopted for the main part of the drilling and grinding tools for stainless steel tableware and mechanical equipment for food production.
4.2 Sensory requirements
Sensory requirements shall be in accordance with those specified in Table 1.
Table 1 Sensory Requirements
Item Requirements
Sense The surface in contact with food shall be clean, the coating shall be free from cracking and peeling. The welded parts shall be smooth and clean without gas cavity, crack or burr.
Soak solution The soak solution obtained from migration test shall be free from abnormal odor.
4.3 Physical and chemical indexes
4.3.1 The physical and chemical indexes of stainless steel articles in direct contact with foodstuff shall be in accordance with those specified in Table2 .
Table 2 Migration Indexes of Stainless Steel
Item Index Test method
Arsenic (As) / (mg/kg) ≤ 0.04 Part 2 of GB 31604.38-2016 or Part 2 of GB 31604.49-2016
Cadmium (Cd) / (mg/kg) ≤ 0.02 GB 31604.24 or Part 2 of GB 31604.49-2016
Lead (Pb) / (mg/kg) ≤ 0.05 Part 2 of GB 31604.34-2016 or Part 2 of GB 31604.49-2016
Chromium (Cr) a/ (mg/kg) ≤ 2.0 GB 31604.25, or Part 2 of GB 31604.49-2016
Nickel (Ni) / (mg/kg) ≤ 0.5 GB 31604.33, or Part 2 of GB 31604.49-2016
a The chromium index is not tested for martensite stainless steel materials and articles.
4.3.2 The physical and chemical indexes of other metal materials and articles shall meet those specified in Table3 .
Table 3 Migration Indexes of Other Metal Materials and Articles
Item Index Test method
Arsenic (As) / (mg/kg) ≤ 0.04 Part 2 of GB 31604.38-2016 or Part 2 of GB 31604.49-2016
Cadmium (Cd) / (mg/kg) ≤ 0.02 GB 31604.24, or Part 2 of GB 31604.49-2016
Lead (Pb) / (mg/kg) ≤ 0.2 Part 2 of GB 31604.34-2016 or Part 2 of GB 31604.49-2016
5 Others
5.1 Migration test
Migration test shall be conducted according to the requirements of GB 31604.1 and GB 5009.156, unless there are special migration test requirements in Appendix A.
5.2 Special service requirements
5.2.1 In metal materials and articles (except tin plate containers), the aluminum, aluminum alloy, copper and copper alloy as well as metal coating without organic coating on food contact surface shall not contact with acid foodstuffs.
5.2.2 Iron-base materials and low alloy steel articles without organic coating shall not contact with acid foodstuffs for a long time.
5.3 Label identification
5.3.1 Label identification shall meet the requirements of GB 4806.1.
5.3.2 The material type and composition of base metal shall be indicated or expressed by Chinese standard designation or unified numerical code, for example, "stainless steel 06Cr19Ni10" or "stainless steel S30408" and "aluminum alloy 3004", etc.
5.3.3 If the food contact surface has metal coating or organic coating, the coating or coating material shall be indicated, for example, "chrome-plated", "galvanized nickel alloy" and "teflon coating", etc. When there is more than one layer of metal coating, the metals of each layer shall be marked in the sequence from outer layer to inner layer, and separated by slash, for example, "chrome-plated / nickel / copper".
Foreword I
1 Scope
2 Terminologies and Definitions
3 Basic Requirements
4 Technical Requirements
5 Others
Appendix A Special Requirements for Migration Test
