Stainless steel AISI 321H is renowned for its high corrosion resistance, ease of welding and processing, as well as enhanced heat resistance, making it a widely used alloy. Products made from this material are utilized in various industries, including engineering, chemical manufacturing, construction, and the creation of pipeline networks for both household and industrial purposes.
The chemical composition of AISI 321H and its key characteristics:
The hardness of AISI 321H steel is 163 Brinell hardness units. The tensile strength (flexibility) of AISI 321H ranges from 205 to 280 N/mm². The density of AISI 321H is approximately 7.79 g/cm³, indicating its lightweight nature compared to other types of stainless steel. The allowable tensile stress for AISI 321H steel is at least 515 MPa.
The chemical composition of the AISI 321H alloy
| C | Mn | P | S | Si | Cr | No | You | |
| ASTM A240 | 0.08 | 2.0 | 0.045 | 0.030 | 1.0 | 17.0 - 19.0 | 9.0 - 12.0 | 5X%C min |
| max | max | max | max | max | 0.5 max | |||
| Typical | 0.06 | Array | 0.020 | 0.020 | 0.5 | Array | Array | 0.48 |
AISI 321H stainless steel is known for its high corrosion resistance, ease of welding and processing, as well as its elevated temperature strength, making it a widely used alloy. Products made from this material are utilized in various industries, including machinery manufacturing, chemical industry, construction, and the creation of pipeline systems for both household and industrial use.
Chemical Composition of AISI 321H and Key Alloy Characteristics: The hardness of AISI 321H steel is 163 units on the Brinell scale. The tensile strength (flexibility) of AISI 321H ranges from 205 to 280 N/mm². The density of AISI 321H is approximately 7.79 g/cm³, indicating its lightness compared to other types of stainless steel. The allowable stress for AISI 321H steel is at least 515 MPa.
Mechanical Properties at Room Temperature:
- Corrosion resistance.
- Resistance to high temperatures (from +600 to +800 degrees Celsius).
- Ductility and ease of processing.
- Good weldability.
- Long service life.
These properties allow the alloy to be widely used in various industries, such as machinery manufacturing, chemical industry, construction, and pipeline production.
| Japan | SUS 321 |
| Sweden | 2237 |
| Australia | 321 |
| Romania | 12TiNiCr180 |
| China | H0Cr20Ni10Ti |
| Germany | 1,4878 |
| Ukraine | 12Х18Н10Т |
AISI 321H stainless steel is available in the form of hot and cold rolled products, such as sheets, pipes, rods, rounds, squares, and wire, allowing manufacturers to choose the optimal option for their needs.
Mechanical properties at room temperature:
| Typical | Minimum | |
| Rp m | 580 | 515 |
| tensile strength (tensile strength), N/mm2 | ||
| Rp0.2 | 280 | 205 |
| strength limit, (0.2 %), (yield), N/mm2 | ||
| A80 | 60 | 40 |
| elongation at break % | ||
| Brinell hardness - HB | 163 | - |
| Fatigue strength, N/mm2 | 260 | - |