magnetism stainless steel and carbon steel compared with the following characteristics

1 ) high resistivity , carbon steel is about 5 times .
2 ) a large linear expansion coefficient larger than 40% carbon , and as the temperature rises , the value of the linear expansion coefficient is increased accordingly .
3 ) low thermal conductivity of steel is about 1/ 3 .
Whether stainless steel or 430 stainless steel magnetic , austenitic steel of the best overall performance , both adequate strength, and excellent hardness while the plastic is not high , which is one reason they are widely used . Austenitic stainless steel with the majority of other similar metal material , the tensile strength , yield strength and hardness increase with decreasing temperature ; the plasticity decreases with decreasing temperature . Increase in the tensile strength of 15 ~ 80 ° C temperature range is more uniform . More important: As the temperature decreases , the impact toughness decreased slowly, there is brittle transition temperature . So magnetic stainless steel sheets at low temperatures to maintain sufficient ductility and toughness .
The so-called duplex stainless steel is quenched organization in its solid phase austenitic ferritic phase of each half , at least relative to the general content may be up to 30 %.
Due to the characteristics of the two -phase structure , through proper control of chemical composition and heat treatment process, so that both the advantages of DSS ferritic and austenitic stainless steel .