TH2101000577A - The patent has not yet been advertised. - Google Patents

Abstract

The fabrication summary which appears on the advertisement page ReadFile:This is provided is high Mn steel with excellent low temperature roughness and excellent surface characteristics.High Mn steel consists of: The chemical composition contains, in mass %, C:0.100 to 0.700%,Si:0.05 to 1.00%,Mn:20.0 to 35.0%,P:less than or equal to 0.030%,S:less than or equal to 0.0070%,Al: 0.010 to 0.070%,Cr:0.50 to 5.00%,N:0.0050 to 0.0500%,O:less than or equal to 0.0050%,Ti:less than or equal to 0.005%,and Nb:less than or equal to 0.005%,with a balance. and the austenite matrix microstructure, where in the microstructure, the Mn concentration of the Mn concentrate is 38.0% or less, and the average KAM value is 0.3 or more, the yield point stress is 400Mpa or more, the absorb energy vE.196 in the Charpy impact test -196°C is 100J or more, and the percentage less than 10% brittle fracture

Claims (1)

Claims (item one) which will appear on the advertisement page: 1.High Mn steel composed of: The chemical composition contains, in % by mass C: 0.1% or more and 0.700% or less, Si: 0.05% or more and 1.00% or less, Mn: 20.0% or less. More than and 35.0% or less, P:0.030% or less, S:0.0070% or less, Al:0.010% or more and 0.070% or less, Cr:0.50% or more and 5.00% or less, N:0.0050% or more and 0.0500% or less, O:0.0050% or less, Ti:0.005% or less, and Nb:0.