Introduction
Stainless steel bar is one of the most important metal materials in the metal industry today, thanks to its excellent corrosion resistance, cost-effectiveness and high durability. As a ferrous alloy, stainless steel bar is composed of iron, chromium, nickel and other alloying elements. The primary component of stainless steel bar is chromium, which imparts a variety of chemical, mechanical, and other physical properties. Due to its superior performance, stainless steel bar is widely used in a variety of industries, including the food and beverage industry, the construction industry, and many others.
GB 1200-92 Standard
GB 1200-92 is the Chinese National Standard for stainless steel bars. This standard has set strict requirements for the production of stainless steel bars and also provides guidance on testing and marking methods. The standard also includes certain requirements for packaging of the product. This standard is an important part of the production and quality assurance process in the metal industry.
Minimum Chemical Requirements for GB 1200-92
The minimum chemical requirements for stainless steel bars as specified in GB 1200-92 are as follows:
Cr: 18-21 % C: 0.15 % Si: 0.8 % Mn: 2.0 % P: 0.045 % S: 0.030% Ni: 8-11 %
In addition to these elements, the standard also specifies that the product should have a carbon content less than 0.08 % and a phosphorous content of 0.030 % or less.
Minimum Mechanical Requirements
The minimum mechanical requirements for stainless steel bars as specified in GB 1200-92 are as follows:
Tensile Strength: 585MPa Yield Strength: 310MPa Elongation in 50mm: 25 %
In addition to these properties, the standard also specifies the hardness values for stainless steel bars. The hardness should be below 190HBW (Rockwell B Hardness)
Conclusion
To sum up, stainless steel bar is one of the most important metal materials in the metal industry today, thanks to its excellent corrosion resistance, cost-effectiveness and high durability. The GB 1200-92 Standard sets strict requirements for the production of stainless steel bars, including minimum chemical and mechanical requirements. By following this standard, manufacturers can ensure that their products are of the highest quality and meet the demands of the industry.
