Section of nickel steel, instead of grades 1Cr17Ni7, magnetic after cold working. Rail vehicles.
Chemical composition:
Carbon C: ≤ 0.15 1Cr17Mn6Ni5N
Si Si: ≤ 1.00
Manganese Mn: 5.50 ~ 7.50
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.060
Chromium Cr: 16.00 ~ 18.00
Ni-Ni: 3.50 ~ 5.50
N N: ≤ 0.25
Mechanical properties:
Tensile strength σb (MPa): ≥ 520
Conditions yield strength σ0.2 (MPa): ≥ 275
Elongation δ5 (%): ≥ 40
Reduction of area ψ (%): ≥ 45
Hardness:
≤ 241HB; ≤ 100HRB; ≤ 253HV
Heat treatment:
Standard heat treatment: solution 1010 ~ 1120 ℃ fast-cooling.
Microstructure
Organizing for the austenitic type.
