Stainless steel pipe factory introduced materials that conform to GB/T3280 and grades are suitable for stainless steel food container containers
The stainless steel pipe factory introduced the materials and grades that meet GB/T3280 material suitable for stainless steel food containers. The stainless steel food containers used stainless steel materials related issues when pointed out: In accordance with the "national standards for food safety stainless steel products" (GB 9684-2011) , should use materials that meet the relevant national standards, that is, in line with GB/T3280 materials and brands. In China's newly issued stainless steel cold-rolled steel sheet and strip standard (GB/T3280-2007), a total of 71 brands, suitable for stainless steel cooking utensils, the manganese content of not more than 2%.
Only 3 of the 71 brands have manganese content greater than 2%:
1,015Cr24Ni22M08Mn3CuN (manganese content 2-4%)
2, 022Cr24Ni17M05Mn6NbN (manganese content of 5 to 7%)
3, 022Cr23Ni4M0CuN (manganese content ≤ 2.5%)
The first two grades are super austenitic stainless steels used in harsh environments such as ocean engineering, seawater desalination, pulp production and flue gas desulfurization plants. The cost is high and processing is extremely difficult. It is impossible to produce food containers. . The third grade is duplex stainless steel, which is characterized by high yield strength, high deformation resistance, low elongation, and is generally not suitable for applications requiring higher cold forming (such as deep drawing). So far, we have not seen an example of using this brand to make stainless steel food utensils. Because it combines the excellent toughness and weldability of austenitic stainless steels with the higher strength and chloride stress corrosion resistance of ferritic stainless steels, in the chemical industry, the oil refining industry, the transportation of oil and natural gas, and seawater The environment, environmental protection industry, light industrial food machinery, and high-strength structural parts have a wide range of uses.
Stainless steel related knowledge sources
1) the tensile, compressive and shear strength of Steel Structure is very high, and the section of steel structure is small and the weight is light. High strength of steel structure makes it suitable for the construction of large load bridges; light weight can reduce the base load, and the cost of the foundation, and also facilitate transportation and hoisting.
2) the ductility and toughness of steel is better and concrete, so that the seismic performance of Steel Structure Bridge is better. The seismic and wind resistance are the guarantee of bridge safety. The excellent seismic performance of the steel structure bridge extends its use range, especially in the high intensity seismic area.
3) reduced construction period. The material of steel structure can be rolled into many kinds of profiles, which is simple and rapid. The transportation volume of building materials is less, the construction area occupies a small area.
4) the quality of steel bridge is easy to be guaranteed. Steel structural members are generally manufactured and processed in factories, with high degree of industrialization and high precision.
5) the steel structure is the environmental protection product. The old components removed from the steel bridge can be remelting, saving energy and consistent with the policy of sustainable development.
Steel Structure Bridge
Steel Structure Bridge,Steel Frame Bridge,Steel Truss Bridge,Steel Prefabricated Bridge
Zhongda Steel Structure , http://www.zhongdametal.com