1Cr18Ni9Ti 

 Stainless steel 1Cr18Ni9Ti is common. 1 1Cr18Ni9Ti carbon nickel-chromium 18 9 titanium, 1,18,9 representing carbon (‰), chromium (%), nickel (%) content 
 . China's stainless steel grades. 

 Chemical composition 
 Carbon C: ≤ 0.12%. Si Si: ≤ 1.00%. Manganese Mn: ≤ 2.00%. S S: ≤ 0.030%. Phosphorus P: ≤ 0.035%. Chromium Cr: 17.00 ~ 19.00%. Ni-Ni: 8.00 ~ 11.00%. Titanium Ti: 0.50 ~ 0.80%. 

 Industry standards 
 Heat treatment and microstructure specifications: Heat treatment specifications: 1) solution 920 ~ 1150 ℃ rapid cooling; 2) According to the demand side, demand can be stabilized, heat treatment temperature of 850 ~ 930 ℃, but it must be specified in the contract. Microstructure: Organizing for the austenitic type. Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery. Edit this paragraph mechanical properties 
 Tensile strength σb (MN/m2)> = 550 yield strength σs (MN/m2)> = 200 Elongation δ5 (%)>= 40 shrinkage ψ (%)>= 55 Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV 1Cr18Ni9Ti our equivalent of the U.S. AISI321, 0Cr18Ni9 equivalent to AISI304, 1Cr18Ni9 equivalent to 302,0 Cr17Ni12Mo2 equivalent to AISI316 1Cr18Ni9Ti = 321 = China Taiwan International Standard X7CrNiTi18-10 = Russia 12X18H10T = Japan SUS321 = Germany X6CrNi18-10 = United States ASTM A276 321 700 ℃ high temperature if used, 1Cr18Ni9Ti should be capable of, because it is an austenitic stainless steel, is very broad application of austenitic refractory steel, but preferably not more than 750 ℃, the heat of solution processing, that is heated to above 1000 ℃, heat water quenched after a certain time, then the use of higher temperature to do 60 ~ 100 ℃ aging. 
 The difference with 0Cr18Ni9 
 Both the carbon content is not the same, 1Cr18Ni9Ti high. Chromium, nickel content, as were 18% and 9%. In this case, because 0Cr18Ni9 low carbon content, lower strength than 1Cr18Ni9Ti, better corrosion resistance than 1Cr18Ni9Ti. However, due to resistance to intergranular corrosion 1Cr18Ni9Ti contain titanium, it can be heat treated to improve its resistance to grain boundary corrosion. Under normal room temperature can be alternative. Generally speaking, 1Cr18Ni9Ti is behind the stainless steel products on behalf of the production process. As the world stainless steel production process improvements, has become obsolete products. In view of China's national conditions, to retain some occasions, but are not recommended steel. Really need 1Cr18Ni9Ti, that may change 0Cr18Ni11Ti. Use the plus Ti, Ti 0Cr18Ni11Ti or without the 0Cr18Ni9, depending on whether the environment is the use of stainless steel intergranular corrosion environment