SS321 stainless steel is a modified version of austenitic stainless steel with the following main features:
High temperature performance:
SS321 has excellent oxidation resistance, with an oxidation resistance temperature of up to 1600°F (about 871°C) 4.
It exhibits good creep strength and corrosion resistance in high temperature environments and is suitable for high temperature corrosion conditions of 400-900°C
Corrosion resistance:
By adding titanium, SS321 can reduce or prevent the sensitization of carbide precipitation during welding and when used in the temperature range of 425-815°C, thereby improving corrosion resistance.
It has good resistance to acid stress corrosion cracking and is suitable for corrosive environments such as chemical process equipment and heat exchangers
Mechanical properties:
The mechanical properties of SS321 vary depending on its form. Common forms include plates, bars, wires and tubes
Its plates, bars, wires and tubes exhibit good mechanical properties such as tensile strength, yield strength and elongation in different application scenarios.
Application areas:
SS321 is widely used in the manufacture of equipment in high temperature environments such as oil refining equipment, pressure vessel pipelines, radiation superheaters, bellows, high temperature heat treatment equipment, etc.
Due to its good corrosion resistance and high temperature performance, SS321 is also used to manufacture piston engine manifolds, expansion joints, thermal oxidizers and other equipment
Processing performance:
SS321 has good formability and weldability, and is suitable for various processing techniques, such as cold processing, hot processing and welding, etc.
| Name | Stainless steel  wire rods |
| Main material | 201 /202 /204/ 207/ 207Cu /301 /302 /303 /303B /304 /304L /304N /308 /308L /308LSi /309 / |
| Â Â Â Â 309L /309LSi /309S /309Si /310/ 310S /314 /316 /316L /316LSi /321 /330 /347 /348 /389 /410 / | |
| Â Â 420/430 | |
| Surface finish | Matt  or bright |
| Diameter | 0.03-20mm  or custom |
| Standard | GB/AISIIS/SUS/UNS/DIN/BS |
| Length | 500m-2000m/reel  or as your requirement |
| Application | Spring, Â BBQ mesh, wire forms, cable, clothes hanger, dish rack, |
| Artistic  work, fishery, steel  wire ball, precise instrument, medical  instrument, oil field etc. | |
| Features | Bright  surface/good  formability/good elasticity/High dimensional  accuracy/anti- |
|   corrosion/acid-resistant/high  temperature resistant/wear-resistant/ hard to  age/high | |
|   tensile strength/chemical  composition stability/purity | |
| Price Term | Ex-Work，FOB,  CIF, CFR |
| Package | 1. Â Carton package |
| 2. Â Wooden package | |
| 3. Â As your requirement |
Composition of Stainless Steel
Steel is an alloy of iron and carbon. Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements. Stainless steel’s corrosion resistance and
mechanical properties can be further enhanced by adding other elements, such as nickel, molybdenum, titanium, niobium, manganese, etc.
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| 201 | ≤0.15 | ≤0.75 | 5.5~7.5 | ≤0.060 | ≤0.03 | 16.00~18.00 | 3.5~5.5 | – | – | 0.08 |
| 202 | ≤0.15 | ≤1.00 | 7.5~10.00 | ≤0.060 | ≤0.03 | 17.00~19.00 | 4.0~6.0 | – | ≤0.25 | |
| 301 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00~18.00 | 6.00~8.00 | – | ||
| 302 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 17.00~19.00 | 8.00~10.00 | – | ||
| 304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.00~20.00 | 8.00~10.50 | – | ||
| 304L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.00~20.00 | 9.00~13.00 | – | ||
| 310S | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 24.00~26.00 | 19.00~22.00 | – | ||
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00~18.00 | 10.00~14.00 | 2.00~3.00 | ||
| 316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00~18.00 | 12.00~15.00 | 2.00~3.00 | ||
| 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 17.00~19.00 | 9.00~13.00 | – | ||
| 430 | ≤0.12 | ≤0.75 | ≤1.00 | ≤0.040 | ≤0.03 | 16.00~18.00 | – | |||
| 2205 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.015 | 22.00~23.00 | 4.5~6.5 | 2.5~3.5 | ||
| 2507 | ≤0.03 | ≤0.08 | ≤1.20 | ≤0.035 | ≤0.015 | 24.00~26.00 | 6.00~8.00 | 3.0~5.0 | ||
| 904L | ≤0.02 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.035 | 19.00~23.00 | 23.00~28.00 | 4.0~5.0 | 1.0~2.0 | |
| INCONEL028 | ≤0.03 | ≤1.00 | ≤2.50 | ≤0.030 | ≤0.030 | ≤28.0 | ≤34.0 | ≤4.0 | ≤1.4 | |
| MONEL400 | ≤0.30 | ≤0.5 | ≤2.00 | – | ≤0.024 | – | ≥63.0 | – | ≤34.0 | |
| INCONEL800 | ≤0.10 | ≤1.00 | ≤1.50 | – | ≤0.015 | ≤23.0 | ≤35 | 4.0~5.0 | – | ≤0.75 |
