0Cr17Ni4Cu4Nb630 stainless steel 
 Brief to improve the cutting performance than 1Cr17. Automatic lathe with bolts, nuts, etc. 
 0Cr17Ni4Cu4Nb630 stainless steel details stainless steel: 0Cr17Ni4Cu4Nb 
 Standard: GB / T 1220-1992 
 ● Features and Scope: Add copper precipitation hardening steel types. For the manufacture of shafts, turbine parts. 
 ● Chemical Composition: 
 Carbon C: ≤ 0.07 
 Si Si: ≤ 1.00 
 Manganese Mn: ≤ 1.00 
 Sulfur S: ≤ 0.030 
 Phosphorus P: ≤ 0.035 
 Chromium Cr: 15.50 ~ 17.50 
 Ni-Ni: 3.00 ~ 5.00 
 Cu Cu: 3.00 ~ 5.00 
 Niobium Nb: 0.15 ~ 0.45 
 ● Mechanical Properties: Tensile strength σb (MPa): 480 ℃ aging, ≥ 1310; 550 ℃ aging, ≥ 1060; 580 ℃ aging, ≥ 1000; 620 ℃ aging, ≥ 930 
 Conditions yield strength σ0.2 (MPa): 480 ℃ aging, ≥ 1180; 550 ℃ aging, ≥ 1000; 580 ℃ aging, ≥ 865; 620 ℃ aging, ≥ 725 
 Elongation δ5 (%): 480 ℃ aging, ≥ 10; 550 ℃ aging, ≥ 12; 580 ℃ aging, ≥ 13; 620 ℃ aging, ≥ 16 
 Reduction of area ψ (%): 480 ℃ aging, ≥ 40; 550 ℃ aging, ≥ 45; 580 ℃ aging, ≥ 45; 620 ℃ aging, ≥ 50 
 Hardness: solid solution, ≤ 363HB and ≤ 38HRC; 480 ℃ aging, ≥ 375HB and ≥ 40HRC; 550 ℃ aging, ≥ 331HB and ≥ 35HRC; 580 ℃ aging, ≥ 302HB and ≥ 31HRC; 620 ℃ aging, ≥ 277HB and ≥ 28HRC 
 ● Heat treatment and microstructure specifications: heat treatment specifications: 1) solid solution 1020 ~ 1060 ℃ rapid cooling; 2) 480 ℃ aging, after solution treatment, 470 ~ 490 ℃ air-cooled; 3) 550 ℃ aging, the solution treatment after, 540 ~ 560 ℃ air-cooled; 4) 580 ℃ aging, after solution treatment, 570 ~ 590 ℃ air-cooled; 5) 620 ℃ aging, after solution treatment, 610 ~ 630 ℃ air-cooled. Microstructure: Organizing for the precipitation hardening