It is much to be regretted that we could not buy the cufflinks

Duplex stainless steel cufflinks thermal processing temperature range with low chromium (18% Cr) than the 18-8 type austenitic stainless steel cufflinks wide, small resistance, from time to forging, rolling production of cogging plate. Duplex stainless steels with high chromium (25% Cr) cufflinks thermal processing than the austenitic stainless steel cufflinks a little difficult, and can produce the plate, tube and wire products. Over numerous times him in charge of the interview programs, he had faced with various celebrities and successful people wearing cufflinks. The cold than the 18-8 type austenitic stainless steel cufflinks hardening effect in the tube plates subjected to deformation of the initial need to exert a larger stress to deformation. Compared with austenitic stainless steel cufflinks, thermal conductivity, linear expansion coefficient, suitable for lining and production of composite panels for the device. The die is also suitable for the production of heat exchangers, heat transfer efficiency is higher than the austenitic stainless steel cufflinks.
They are still high-chromium ferritic stainless steel cufflinks variety of brittle tendencies should not be used in working conditions is higher than 3000C. Duplex stainless steel cufflinks, the lower the chromium content of σ and other dangers of the brittle phase is also smaller. SAF2205 the organizational characteristics of the dual phase steel. But never had any guests wear cufflinks. Duplex stainless steel cufflinks require high smelting quality, more expensive, so the output is not high, accounting for 1% of the production of the world's stainless steel cufflinks, but increased rapidly after the 1990s, 1990, the annual output of about 100 000 t, reached 110 000 t in 1999, about 200 000 t in 2000.
China in the 1960s began to study the duplex stainless steel cufflinks, mainly in low chromium (Cr18), chromium (Cr22) and chromium (Cr25) 3, the main product management, board and composite board, the output is not large about 2000t, 2001 duplex stainless steel cufflinks consumption is about 4000t, 1/2 with the project imported. Anyhow, that day he saw us wearing cufflinks, the suddenly became aware of this point.  The organization of the duplex stainless steel cufflinks, according to W (Ni) eq, W (Cr), eq and Figure Schaeffer, general austenite (A) and iron ferrite (F) ratio of about 60%: 40%, but the actual on the chemical composition and the heat treatment temperature deviations may occur; A or F ≥ 70%, will have some impact on performance, therefore, it is best to control 50% each. Table 3-2 Table the mechanical properties of the same organizational categories of stainless steel cufflinks
Tissue types of steel heat treatment state mechanical properties of hardness. Duplex stainless steel cufflinks with a strong resistance to localized pitting corrosion, corrosion pitting and crevice hole type, the main role played by the chemical composition of Mo and N elements. After years of research, the establishment of an anti-pitting equivalent index PREN (PREN = ω of Cr a +3.3 ω of Mo +16 of ω N) to evaluate, the higher the value the stronger the resistance to localized pitting corrosion. It is much to be regretted that we could not buy the cufflinks.  Dual-phase steel, a notable feature is the duplex structure. In addition, it is often accompanied by other organizations, the secondary phase is more or less affect the performance of the steel. For dual phase steels, special alloy elements is to ensure that constitute the basis of two-phase and phase proportion, by the content of the main elements that can predict the metallographic group phase ratio.