Stainless steel bar material and electromagnetic component

Abstract

A bar-shaped stainless steel product having a chemical composition that contains, by mass %: 0.001 to 0.030% of C; 0.01 to 4.00% of Si; 0.01 to 2.00% of Mn; 0.01 to 4.00% of Ni; 8.0 to 35.0% of Cr; 0.01 to 5.00% of Mo; 0.01 to 2.00% of Cu; 0.001 to 0.030% of N; 7.000% or less of Al; 0 to 2.00% of Ti; 0 to 2.00% of Nb; and 0 to 0.1% of B; one or more elements selected from 0.001% or more of Ti, 0.001% or more of Nb, and 0.0001% or more of B being contained, a balance consisting of Fe and impurities, an average particle size of nitrides being 10 μm or less, and a solute N content in steel being 0.020 mass % or less.

1 . A bar-shaped stainless steel product comprising a chemical composition comprising, by mass %: 0.001 to 0.030% of C; 0.01 to 4.00% of Si; 0.01 to 2.00% of Mn; 0.01 to 4.00% of Ni; 8.0 to 35.0% of Cr; 0.01 to 5.00% of Mo; 0.01 to 2.00% of Cu; 0.001 to of N; 7.000% or less of Al; 0 to 2.00% of Ti; 0 to 2.00% of Nb; 0 to 0.1000% of B; one or more elements selected from 0.001% or more of Ti, 0.001% or more of Nb, and 0.0001% or more of B being comprised; 0 to 2.50% of Sn; 0 to 2.0% of V; 0 to 3.00% of W; 0 to 0.05% of Ga; 0 to 2.50% of Co; 0 to 2.50% of Sb; 0 to 2.50% of Ta; 0 to 0.05% of Ca; 0 to 0.012% of Mg; 0 to 0.012% of Zr; 0 to 0.05% of REM; 0 to 0.30% of Pb; 0 to 0.80% of Se; 0 to 0.30% of Te; 0 to 0.50% of Bi; 0 to 0.50% of S; and 0 to 0.30% of P,
 a balance consisting of Fe and impurities,   an average particle size of nitrides being 10 μm or less, and   a solute N content in steel being 0.020 mass % or less and/or a solute B content in steel being 0.015 mass % or less.   
     
     
         2 . (canceled) 
     
     
         3 . The bar-shaped stainless steel product according to  claim 1 , wherein the chemical composition further comprises, by mass %, one or more groups selected from First Group, Second Group, and Third Group below:
 First Group: one or more elements selected from 0.0001 to 2.5% of Sn; 0.001 to 2.0% of V; 0.05 to 3.0% of W; 0.0004 to 0.05% of Ga; 0.05 to 2.5% of Co; 0.01 to 2.5% of Sb; and 0.01 to 2.5% of Ta,   Second Group: one or more elements selected from 0.0002 to 0.05% of Ca; 0.0002 to of Mg; 0.0002 to 0.012% of Zr; and 0.0002 to 0.05% of REM, and   Third Group: one or more elements selected from 0.0001 to 0.30% of Pb; 0.0001 to 0.80% of Se; 0.0001 to 0.30% of Te; 0.0001 to 0.50% of Bi; 0.0001 to 0.50% of S; and 0.0001 to 0.30% of P.   
     
     
         4 . The bar-shaped stainless steel product according to  claim 1 , wherein a strain rate without cracking at a compressibility of 70% is 0.1/s or more, a hole depth, which represents a tool life, through drilling is 50 mm or more, or coercive force is 5.0 A/m or less. 
     
     
         6 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . An electromagnetic component using the bar-shaped stainless steel product according to  claim 1 . 
     
     
         8 . A bar-shaped stainless steel product, which excludes a steel wire, comprising a chemical composition comprising, by mass %: 0.001 to 0.030% of C; 0.01 to 4.00% of Si; 0.01 to 2.00% of Mn; 0.01 to 4.00% of Ni; 8.0 to 35.0% of Cr; 0.01 to 5.00% of Mo; 0.01 to 2.00% of Cu; 0.001 to 0.030% of N; 7.000% or less of Al; 0 to 2.00% of Ti; 0 to 2.00% of Nb; 0 to 0.1000% of B; one or more elements selected from 0.001% or more of Ti, 0.001% or more of Nb, and 0.0001% or more of B being comprised; 0 to 2.50% of Sn; 0 to 2.0% of V; 0 to 3.00% of W; 0 to 0.05% of Go; 0 to 2.50% of Co; 0 to 2.50% of Sb; 0 to 2.50% of Ta; 0 to 0.05% of Ca; 0 to 0.012% of Mg; 0 to 0.012% of Zr; 0 to 0.05% of REM; 0 to 0.30% of Pb; 0 to 0.80% of Se; 0 to 0.30% of Te; 0 to 0.50% of Bi; 0 to 0.50% of S; and 0 to 0.30% of P,
 a balance consisting of Fe and impurities, 
 an average particle size of nitrides being 10 μm or less, and 
 a solute N content in steel being 0.020 mass % or less and/or a solute B content in steel comprising 0.015 mass % or less. 
 
     
     
         9 . (canceled) 
     
     
         10 . The bar-shaped stainless steel product, which excludes the steel wire, according to  claim 8 , wherein the chemical composition further comprises, by mass %, one or more groups selected from First Group, Second Group, and Third Group below:
 First Group: one or more elements selected from 0.0001 to 2.5% of Sn; 0.001 to 2.0% of V; 0.05 to 3.0% of W; 0.0004 to 0.05% of Ga; 0.05 to 2.5% of Co; 0.01 to 2.5% of Sb; and 0.01 to 2.5% of Ta,   Second Group: one or more elements selected from 0.0002 to 0.05% of Ca; 0.0002 to of Mg; 0.0002 to 0.012% of Zr; and 0.0002 to 0.05% of REM, and   Third Group: one or more elements selected from 0.0001 to 0.30% of Pb; 0.0001 to 0.80% of Se; 0.0001 to 0.30% of Te; 0.0001 to 0.50% of Bi; 0.0001 to 0.50% of S; and 0.0001 to 0.30% of P.   
     
     
         11 . An electromagnetic component using the bar-shaped stainless steel product, which excludes the steel wire, according to  claim 8 . 
     
     
         12 . The bar-shaped stainless steel product according to  claim 3 , wherein a strain rate without cracking at a compressibility of 70% is 0.1/s or more, a hole depth, which represents a tool life, through drilling is 50 mm or more, or coercive force is 5.0 A/m or less. 
     
     
         13 . An electromagnetic component using the bar-shaped stainless steel product according to  claim 3 . 
     
     
         14 . An electromagnetic component using the bar-shaped stainless steel product according to  claim 4 . 
     
     
         15 . An electromagnetic component using the bar-shaped stainless steel product, which excludes the steel wire, according to  claim 10 .