S34565 is alean duplex stainless steel (LDSSS) withUNS (Unified Numbering System) designation. It is also known as 1.4162 or Ferralium 255 in some specifications. This stainless steel grade offers a good balance of properties, including high corrosion resistance, strength, and weldability.
S34565 is alean duplex stainless steel (LDSSS) withUNS (Unified Numbering System) designation. It is also known as 1.4162 or Ferralium 255 in some specifications. This stainless steel grade offers a good balance of properties, including high corrosion resistance, strength, and weldability.
National rules model：
Unified Numbering System (UNS): S34565
European Norm (EN): 1.4162 / X2CrNiNb18-10
ASTM: ASTM A240 / A240M S34565
Chemical Composition:
Chromium (Cr): 18.0-20.0%
Nickel (Ni): 8.0-10.0%
Molybdenum (Mo): 2.0-3.0%
Nitrogen (N): 0.10-0.20%
Manganese (Mn): ≤2.0%
Silicon (Si): ≤1.0%
Phosphorus (P): ≤0.045%
Sulfur (S): ≤0.030%
Carbon (C): ≤0.030%
Columbium (Nb) / Niobium: 8.5 x (C+N) min.
Physical Properties:
Density: Approximately 7.9 g/cm³
Melting Point: Around 1390-1400°C
Coefficient of Thermal Expansion: 13.7 x 10⁻⁶ /°C (at room temperature)
Electrical Resistivity: 72.4 µΩ·m
Thermal Conductivity: 23.1 W/mK
Mechanical Properties:
Tensile Strength: 700-850 MPa
Yield Strength: 300-550 MPa depending on the heat treatment
Elongation: 20-30%
Hardness: Approximately HB 200-270 (Rockwell B scale)
Application Areas:
Marine Environments: Due to its high corrosion resistance, it's used for various applications in ships, off-shore platforms, and other marine structures that are exposed to saline conditions.
Chemical Processing: Ideal for handling aggressive chemicals in chemical and petrochemical plants, such as heat exchangers, valves, and pipelines.
Food Processing Industry: Used in processing equipment and containers that need to resist both wear and corrosive substances, such as fruit juice evaporators.
Power Generation: Employed in components that are exposed to high temperatures and corrosive conditions in power plants, including fossil fuel plants and nuclear reactors.
Pollution Control: Used in flue gas desulfurization systems and other air pollution control equipment.
Automotive and Aerospace: Due to its strength and light weight, it may be used in some automotive and aerospace applications.
General Engineering: Suitable for various general engineering purposes where a combination of good general corrosion resistance and high strength is required.
Please note that specific chemical compositions and mechanical properties can vary depending on the source and manufacturing process, so the information provided is intended for general guidance.
| 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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