0Cr17Ni7Al 
 Standard: GB / T 1220-1992 features 0Cr17Ni7Al add aluminum precipitation hardening steel types, for spring, hot laps and scoring device components. Edit this paragraph the chemical composition 
 Carbon C: ≤ 0.09 
 0Cr17Ni7Al 
 Si Si: ≤ 1.00 Manganese Mn: ≤ 1.00 S S: ≤ 0.030 P P: ≤ 0.035 Cr-Cr: 16.00 ~ 18.00 Ni-Ni: 6.50 ~ 7.75 Copper Cu: ≤ 0.50 Aluminum Al: 0.75 ~ 1.50 
 Mechanical Properties 
 Tensile strength σb (MPa): solid solution, ≤ 1030; 565 ℃ aging, ≥ 1140; 510 ℃ when 
 0Cr17Ni7Al 
 Efficiency, ≥ 1230 conditions yield strength σ0.2 (MPa): solid solution, ≤ 380; 565 ℃ aging, ≥ 960; 510 ℃ aging, ≥ 1030 Elongation δ5 (%): solid solution, ≥ 20; 565 ℃ aging , ≥ 5; 510 ℃ aging, ≥ 4 Reduction of ψ (%): 565 ℃ aging, ≥ 25; 510 ℃ aging, ≥ 10 Hardness: solid solution, ≤ 229HB; 565 ℃ aging, ≥ 363HB; 510 ℃ aging, ≥ 388HB 
 Heat treatment 
 1) solution, 1000 ~ 1100 ℃ rapid cooling; 2) 565 ℃ aging, after solution treatment, 760 ± 15 ℃ to maintain 90min, cooled to within 1h at 15 ℃, to maintain 30min, then heated to 565 ± 10 ℃ to maintain 90min, air-cooled; 3) 510 ℃ aging, after solution treatment, 955 ± 10 ℃ to maintain 10min, cooled to room temperature in less than 24h cooled to -73 ± 6 ℃, maintained 8h, and then heated to 510 ± 10 ℃ to maintain 60min , air-cooled. 
 Microstructure 
 Organizing for the precipitation hardening. 
 Delivery Status 
 Generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.