S32101 is a designation for aduplex stainless steel, which is a group of stainless steels that exhibit properties of both austenite and ferrite microstructures. The "S" prefix is often used to denote stainless steel grades in the Unified Numbering System (UNS). S32101 corresponds to the 2101 duplex stainless steel, which is similar to the standards of other countries.
National rules model:
Unified Numbering System (UNS): S32101
American Society for Testing and Materials (ASTM): UNS S32101 / 2101
European Norm (EN): 1.4162
Chemical Composition:
Chromium (Cr): 21.0-23.0%
Nickel (Ni): 4.0-5.0%
Molybdenum (Mo): 2.5-3.5%
Nitrogen (N): 0.14-0.22%
Manganese (Mn): ≤1.5%
Silicon (Si): ≤0.80%
Phosphorus (P): ≤0.03%
Sulfur (S): ≤0.02%
Carbon (C): ≤0.03%
Physical Properties:
Density: 约 7.8 g/cm³
Melting Point: Approximately 1400°C
Thermal Expansion Coefficient: 12.7 x 10⁻⁶ /°C (at room temperature)
Electrical Resistivity: 约 72 µΩ・m
Mechanical Properties:
Tensile Strength: 690-900 MPa
Yield Strength: 450-650 MPa
Elongation: 15-25%
Hardness: Approximately HB 200-250 (Rockwell B scale)
Application Areas:
Chemical Processing: Used in equipment and piping systems that handle corrosive chemicals due to its excellent resistance to pitting and crevice corrosion.
Marine Environments: Employed in the construction of ships, piers, and other marine structures because of its superior corrosion resistance to saltwater.
Oil and Gas Industry: Pipelines, wellheads, and subsea equipment benefit from the alloy's strength and corrosion resistance.
Desalination Plants: The material of choice for heat exchangers and pipes in desalination and seawater treatment plants.
Paper and Pulp Industry: Resistant to the corrosive conditions found in chemical pulping processes.
Power Generation: Used in the construction of components for power plants, particularly in environments where both strength and corrosion resistance are critical.
Food and Beverage Industry: Suitable for use in processing equipment due to its ability to resist staining and corrosion.
Duplex stainless steels like S32101 offer a balance of corrosion resistance, strength, and cost-effectiveness, making them a popular choice for a wide range of demanding applications. Please note that specific chemical compositions and mechanical properties can vary depending on the source and manufacturing process, and the information provided is for general reference.
Common Surfaces
Stainless Steel Standards Comparison Table
STS |
USA |
UNS |
CHINA |
EURONORM |
RUSSIA |
SWEDISH |
JAPANESE |
GRADE |
AISI/ASTM |
NO |
GB |
NO |
NAME |
GOST |
SS |
JIS |
201 |
201 |
S20100 |
12Cr17Mn6Ni5N |
1.4372 |
- |
- |
- |
SUS 201 |
301 |
301 |
S30100 |
12Cr17Ni7 |
1.4310 |
X 12 CrNi 17 7 |
- |
2331 |
SUS 301 |
303 |
303 |
S30300 |
1Cr18Ni9MoZr |
1.4305 |
X 10 CrNiS 18 9 |
- |
2346 |
SUS 303 |
304 |
304 |
S30400 |
06Cr18Ni9 |
1.4301 |
X 6 CrNi 18 10 |
08KH18N10 06KH18N11 |
2332 |
SUS 304 |
304L |
304L |
S30403 |
022Cr19Ni10 |
1.4307 |
X 3 CrNi 18 10 |
03KH18N11 |
2352 |
SUS 304L |
316 |
316 |
S31600 |
0Cr17Ni12Mo2 |
1.4401 |
X 6 CrNiMo 17 12 2 |
- |
2347 |
SUS 316 |
316L |
316L |
S31603 |
022Cr17Ni12Mo2 |
1.4404 |
X 3 CrNiMo 17 12 2 |
- |
2348 |
SUS 316L |
316Ti |
316Ti |
S31635 |
0Cr18Ni12Mo2Ti |
1.4571 |
X 6 CrNiMoTi 17 12 2 |
08KH17N13M2T 10KH17N13M2T |
2350 |
- |
321 |
321 |
S32100 |
0Cr18Ni11Ti |
1.4541/1.4878 |
X 6 CrNiTi 18 10 |
12KH18N10T |
2337 |
SUS 321 |
347 |
347 |
S34709 |
0Cr18Ni11Nb |
1.4550 |
X 6 CrNiNb 18 10 |
- |
2338 |
SUS 347 |
309S |
309S |
S30908 |
0Cr23N13 |
1.4833 |
X 6 CrNi 22 13 |
20KH23N18 |
- |
SUS 309S |
310S |
310S |
S31008 |
06Cr25Ni20 |
1.4842 |
X 6 CrNi 25 20 |
20KH25N20S2 |
2361 |
SUS 310S |
416 |
416 |
S41600 |
Y1Cr13 |
1.4005 |
X12CrS13 |
- |
2380 |
SUS 416 |
2205 |
2205 |
S32205/S31803 |
00Cr22Ni5Mo3N |
1.4462 |
X2CrNiMoN22-5-3 |
02Ch22N5AM2 |
2377 |
SUS 329J3L |
2507 |
2507 |
S32750 |
00Cr25Ni7Mo4N |
1.4410 |
X 2 CrNiMoN 25-7-4 |
- |
- |
- |
904L |
904L |
N08904 |
- |
1.4539 |
- |
- |
- |
- |
254SMO |
254SMO |
S31254 |
- |
1.4547 |
X1CrNiMoCuN20-18-7 |
- |
2378 |
- |
253MA |
253MA |
S30815 |
- |
1.4835 |
X9CrNiSiNCe21-11-2 |
- |
2368 |
- |
17-4PH/630 |
17-4PH/630 |
S17400 |
0Cr17Ni4Cu4Nb |
1.4542 |
X5CrNiCuNb16-4 |
05Ch16N4D2B |
- |
SUS630 |