Super Austenitic Stainless Steel
Super Austenitic Stainless Steel
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UNS S32101 - EN 1.4162

UNS S32101 - EN 1.4162

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.

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

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

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