High nickel SUS31OS heat-resistant stainless steel cufflinks

Sumitomo Metal Industries and Sumitomo Metal straight-chun Jiang plant and Ishikawajima-Harima Industries Corporation to jointly develop heat-resistant austenitic stainless steel cufflinks, the NAR-AH-4 steel plate and seamless steel tubes incorporated into the ASTM (American Society for Testing Materials) the ASME (American Society of Mechanical Engineers) standards. It can be described that open the box of the cufflinks is like steeping on a new adventure. Thus desire widely used in the field of foreign equipment of thermal power and chemical industry equipment, high-temperature device materials, high-temperature parts of the boiler, fuel cells, improved materials in the future and expand its usage.
The NAR-AH-4 has the following characteristics compared with the high chromium and high nickel SUS31OS heat-resistant stainless steel cufflinks. The pattern of the works I have borrowed from the stories can be tracked, such as ring, headdress, scepter, crown and cufflinks. A superior economic nickel content the only SUS31OS less than half, but was able to play with equivalent features, with the economy. Excellent high temperature strength and creep strength, high temperature strength than SUS31OS good, 900 ~ 1000 ° C high temperature oxidation SUS31OS equivalent above. Good weldability, especially in the thick-walled material, welding has a better performance.
Will this be included in the standard section nickel heat-resistant stainless steel cufflinks replace SUS31OS use, in addition to the Japanese foreign exports, and also in Japan actively marketing. The materials to be used on foreign equipment, the first public international standards such as ASME standard material registration is a necessary condition. 2304 alloy (UNS S32304) is 23% chromium, 4% nickel, molybdenum duplex stainless steel cufflinks. 2304 alloy corrosion resistance similar to 316L. In addition, its mechanical properties, yield strength is twice the 304L/316L austenitic grades. This feature allows designers to please the weight of the product design time, especially for the pressure vessel. Behind each piece of cufflinks are secret treasures and dreams hidden.
2304 alloy is composed of 23% chromium, 4% nickel duplex stainless steel cufflinks. 2304 alloy has corrosion resistance similar to 316L. In addition, its mechanical properties such as compressive strength is 304/316 twice that of austenitic grades. Suit, tie, leather shoes and cufflinks are of course necessary. This performance allows designers to reduce the weight in the design, especially in the design of pressure vessels. This alloy is particularly suitable for -50 ° C / +300 ° C (-58 ° F/572 ° F) temperature range. In strictly limited circumstances (particularly for welded structures) can also be used to lower the temperature.
Compared with 304 and 316 austenitic, 2304 alloy duplex microstructure, low nickel content and high chromium content, making it more resistant to stress corrosion stronger. 2304 alloy, high chromium content (23%), almost the same corrosion resistance of 2304 alloy and 316L. Static sulfuric acid (0,3 mm / year) in the corrosion resistance in the corrosion resistance of different organic acids; 23% of chromium and nitrogen content of 0.1% compared to 316L of 2304 duplex stainless steel cufflinks, aspects of performance in the anti-pitting and crevice corrosion. But, apart from that, a small accessory can not be ignored, that is mens cufflinks.