Standard: GB / T 1221-1992
Features and application: can withstand repeated heating 980 ℃ the following antioxidant. Used as furnace parts, heavy oil burner.
Chemical Composition: C: ≤ 0.20 Si Si: ≤ 1.00 Mn Mn: ≤ 2.00 Sulfur S: ≤ 0.030 P P: ≤ 0.035 Chromium Cr: 22.00 ~ 24.00 Nickel Ni: 12.00 ~ 15.00
Mechanical Properties: Tensile strength σb (MPa): ≥ 560 conditions yield strength σ0.2 (MPa): ≥ 205 Elongation δ5 (%): ≥ 45 Reduction of area ψ (%): ≥ 50 Hardness: ≤ 201HB
Heat treatment and microstructure specifications: heat treatment specification: solid solution 1030 ~ 1150 ℃ fast-cooling. Microstructure: Organizing for the austenitic type.
Delivery status: the state generally regulate heat delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.
