SUS405 is ferritic stainless steel containing Cr of the lowest kind.
It has a good plastic, toughness and cold forming, but also a higher amount than the other Cr-containing ferritic stainless steel.
When SUS405 steel with low C content control, its plasticity, especially toughness, cold formability also improved significantly.
SUS405 is ferritic stainless steel containing Cr of the lowest kind.
SUS405 steel is mainly used to produce water vapor, sulfur hot oil parts and equipment corrosion lining and so on.
Features: for high toughness and parts subject to shock loading.
Uses: as turbine blades, structural frame, stainless steel equipment, lining, bolts, nuts and so on.
SUS405 chemical composition
Carbon C: ≤ 0.08
Si Si: ≤ 1.00
Manganese Mn: ≤ 1.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 11.50 ~ 13.50
  Ni-Ni: ≤ 0.60
SUS405 mechanical properties:
Tensile strength σb (MPa): quenching and tempering, ≥ 490
Conditions yield strength σ0.2 (MPa): quenching and tempering, ≥ 345
Elongation δ5 (%): quenching and tempering, ≥ 24
Reduction of area ψ (%): quenching and tempering, ≥ 60
Hardness: Annealed, ≤ 183HB
SUS405 Heat Treatment specifications and microstructure
Standard heat treatment: annealing, 800 ~ 900 ℃ slow cooling or rapid cooling of about 750 ℃​​; 2) quenching (solution), 950 ~ 1000 ℃ oil cooling; 3) temper, 700 ~ 750 ℃ ​​fast-cooling.
Microstructure: Organizing for the martensitic type.