Introduction to the chemical composition, grades and current implementation standards of 1Cr18Ni9Ti wire mesh products

Chemical composition, brand and current implementation standards of 1Cr18Ni9Ti wire mesh products
Stainless steel 1Cr18Ni9Ti is ordinary stainless steel. 1Cr18Ni9Ti is 1 carbon, 18 chromium, 9 nickel and part titanium. 1, 18 and 9 represent the content of each component respectively. It is a stainless steel material brand in China.

1Cr18Ni9Ti wire mesh products are produced and processed according to the national standard: GB/T1220-1992

Mechanical properties of 1Cr18Ni9Ti:
Tensile strength σb (MN/m2) >=550
Yield strength σs (MN/m2) >=200
Elongation δ5 (%) 〉=40
1Cr18Ni19Ti stainless steel 　
shrinkage ψ (%) 〉=55
Hardness: ≤187HB; ≤90HRB; ≤200HV
China's 1Cr18Ni9Ti is equivalent to the US AISI321, 0Cr18Ni9 is equivalent to AISI304, 1Cr18Ni9 is equivalent to 302, 0Cr17Ni12Mo2 is equivalent to AISI316

If 1Cr18Ni9Ti is used at a high temperature of 700℃, 1Cr18Ni9Ti should be competent because it is both austenitic stainless steel and a widely used austenitic heat-resistant steel. However, it is best not to exceed 750℃. Its heat treatment is solution treatment, that is, heating to above 1000℃, keeping warm for a certain period of time, then quenching with water, and then aging at 60~100℃ higher than the use temperature.

Chemical composition of 1Cr18Ni9Ti:
1Cr18Ni9Ti contains carbon (C) ≤ 0.12, silicon (Si) ≤ 1.00, manganese (Mn) ≤ 2.00, sulfur (S) ≤ 0.030, phosphorus (P) ≤ 0.035, chromium (Cr) 17.00 ~ 19.00, nickel (Ni) 8.00 ~ 11.00, titanium (Ti) 5 (C% -0.02) ~ 0.80.

1Cr18Ni9Ti belongs to China's steel grade. And it is the steel grade in the old national standard. That is, the original 321. (Now the steel grade of 321 is: 0Cr18Ni10Ti) There are many ways to classify stainless steel. According to the main chemical composition, it is divided into chromium stainless steel, chromium-nickel stainless steel and chromium-manganese-nitrogen stainless steel. 1Cr18Ni9Ti belongs to chromium-nickel stainless steel. According to the performance characteristics, it is divided into acid-resistant stainless steel and heat-resistant stainless steel. 1Cr18Ni9Ti belongs to acid-resistant stainless steel. According to the metallographic structure, it is divided into: austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, duplex stainless steel, precipitation hardening stainless steel, etc. 1Cr18Ni9Ti belongs to austenitic stainless steel. There are some less commonly used classification methods that are not listed one by one. Generally speaking, classification by metallographic structure is the most commonly used and universal. So generally speaking, 1Cr18Ni9Ti belongs to austenitic stainless steel.