321H stainless steel has good corrosion resistance, especially in oxidizing medium has good corrosion resistance. Because of its good heat resistance and oxidation resistance, it is more used as a heat resistant steel. Comparing with 321 Stainless steel, [TJC STEEL]321H has higher Carbon content and similar properties with 321 Stainless. 

 

A. 321H Corresponding Brand:  

1, GB GB-T standard: digital brand number: S32169, new brand number: 07Cr19Ni11Ti, old brand number: 1Cr18Ni11Ti;  

2, American standard: ASTM standard: [TJC STEEL]S32109, UNS standard: 321H;  

3, JIS standard: SUS321HTB;  

4, DIN standard: 1.4940,1.4541;  

5, European standard EN standard: "X8CrNiTI18-10, X7CrNiTI18-10;  

6, NF standard: /;  

7, British BS standard: 321S20.  

 

B. 321H Stainless Steel Chemical Composition:  

⑴ carbon C: 0.04~0.10⑵ silicon Si: ≤0.75, [TJC STEEL]⑶ manganese Mn: ≤2.00, ⑷ phosphorus P: ≤0.030, ⑸ sulfur S: ≤0.030,[TJC STEEL] ⑹ chromium Cr: 17.00 ~ 20.00, ⑺ nickel Ni: 9.00 ~ 13.00, other elements: Ti≥4C~0.60.  

 

C. 321H Stainless Steel Physical Properties:  

Density Density (20℃) /kg/dm3:"8.03,, magnetism: none.  

 

D. 321H Stainless Steel Mechanical Properties:  

(1) Delivery status: solid solution treatment of bar, solid solution pickling of plate;  

⑵ Tensile strength (RM/MPa) 520;  

⑶ Elongation strength[TJC STEEL] (Rp0.2/MPa) : 205;  

⑷ Elongation A/% : 40;  

⑸ Area shrinkage (Z/%) : 50.  

 

E. 321H Stainless Steel Heat Treatment:  

1. Hardness HBW≤ : solution 187, hardness HRB≤ : 90;  

2. Heating temperature: 920~1150;  

3. Heating method: fast cooling.  

 

321H Stainless Steel’s Application:

321H Stainless Steel is [TJC STEEL]widely used for boiler superheater, heat exchanger, condenser, catalytic tube, cracking tube device and other steel tubes and fittings.