Properties of high strength, non magnetic, austenitic 17%Cr-15%Mn stainless steel.

概要

論文の詳細を見る
Properties of 17%Cr-15%Mn-0.35%N austenitic stainless steel were investigated for its application to spring use, compared with other Cr-Ni type 301, 304 and so on.This stainless steel has high strength and maintains its low magnetic permeability even after large amounts of cold working. Increasing of the hardness and the threshold value of spring by aging of this steel in the as rolled condition is larger and its softening start temperature is 650 to 700°C, about 200°C higher than those of type 301 steel. Decreasing rate of its hardness by so high temperature overaging as 700 to 800°C is very slow. The elevated temperature strength of this steel by short time tensile test was compared with the other Cr-Ni stainless and heat resistant steels; type 304, 310 and so on. This steel has the highest strength at the temperature range of RT to 800°C among these steels.This stainless steel is used where high strength and low magnetic permeability are required. And also this steel is expected to be used for elevated temperature spring such as metal packings for automotive engine peripheries: cylinder head gasket, exhaustmanifold gasket, and so on.
日本ばね学会の論文