General Properties
Alloy 317L (UNS S31703) is a lowcarbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades. The alloy provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.
The low carbon content of Alloy 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317 (UNS S31700).
Alloy 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, however the material will harden due to cold working. Alloy 317L can be easily welded and processed by standard shop fabrication practices.
Applications
- Air Pollution Control — flue gas desulfurization systems (FGD)
- Chemical and Petrochemical Processing
- Explosives
- Food and Beverage Processing
- Petroleum Refining
- Power Generation — condensers
- Pulp and Paper
Standards
ASTM........A 240
ASME........SA 240 Corrosion Resistance
The higher molybdenum content of Alloy 317L assures superior general and localized corrosion resistance in most media when compared with 304/304L and 316/316L stainless steels. Environments that don't attack 304/304L stainless steel will normally not corrode 317L. One exception, however, are strongly oxidizing acids such as nitric acid. Alloys that contain molybdenum generally do not perform as well in these environments.
Alloy 317L has excellent corrosion resistance to a wide range of chemicals. It resists attack in sulfuric acid, acidic chlorine and phosphoric acid. It is used in handling hot organic and fatty acids often present in food and pharmaceutical processing applications.
The corrosion resistance of 317 and 317L should be the same in any given environment. The one exception is where the alloy will be exposed to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). Because of its low carbon content, 317L is the preferred material in this service to guard against intergranular corrosion.
In general, austenitic stainless steels are subject to chloride stress corrosion cracking in halide service. Although 317L is somewhat more resistant to stress corrosion cracking than 304/304L stainless steels, because of its higher molybdenum content, it is still susceptible.
The higher chromium, molybdenum and nitrogen content of 317L enhance its ability to resist pitting and crevice corrosion in the presence of chlorides and other halides. The Pitting Resistance Equivalent including Nitrogen number (PREN) is a relative measure of pitting resistance. The following chart offers a comparison Alloy 317L and other austenitic stainless steels.
| ALLOY | Composition (Weight Percent) | PREN1 |
| Cr | Mo | N |
| 304 Stainless Steel | 18.0 | — | 0.06 | 19.0 |
| 316 Stainless Steel | 16.5 | 2.1 | 0.05 | 24.2 |
| 317L Stainless Steel | 18.5 | 3.1 | 0.06 | 29.7 |
| SSC-6MO | 20.5 | 6.2 | 0.22 | 44.5 |
1Pitting Resistance Equivelant, including Nitrogen, PREN = Cr + 3.3Mo + 16N
Chemical Analysis
Weight % (all values are maximum unless a range is otherwise indicated)
| | | | |
| Chromium | 18.0 min.-20.0 max. | Phosphorus | 0.045 |
| Nickel | 11.0 min.-15.0 max. | Sulfur | 0.030 |
| Molybdenum | 3.0 min. - 4.0 max. | Silicon | 0.75 |
| Carbon | 0.030 | Nitrogen | 0.10 |
| Manganese | 2.00 | Iron | Balance |
Physical Properties
Density
0.285 lbs/in3
7.89 g/cm3 Specific Heat
0.12 BTU/lb-°F (32 – 212°F)
502 J/kg-°K (0 – 100°C) Modulus of Elasticity
29.0 x 106 psi
200 GPa
Thermal Conductivity 68°F (20°C)
8.1 BTU/(hr x ft x °F)
14 W/(m x K) Melting Range
2540 – 2630°F
1390 – 1440°C Electrical Resistivity
33.5 Microhm-in at 68°C
85.1 Microhm-cm at 20°C Mean Coefficient of Thermal Expansion
| Temperature Range | |
| °F | °C | in/in °F | cm/cm °C |
| 68-212 | 20-100 | 8.9 x 10-6 | 16.2 x 10-6 |
Mechanical Properties
Values at 68°F (20°C) (minimum values, unless specified)
Yield Strength
0.2% Offset | Ultimate Tensile
Strength | Elongation
in 2 in. | Hardness |
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 30,000 | 205 | 75,000 | 515 | 40 | 95 Rockwell B |
Fabrication Data
Alloy 317L can be easily welded and processed by standard shop fabrication practices.
Cold Forming
The alloy is quite ductile and forms easily. The addition of molybdenum and nitrogen implies more powerful processing equipment may be necessary when compared with the standard 304/304L grades.
Hot Forming
Working temperatures of 1652 – 2102°F (900 – 1150°C) are recommended for hot working processes. Do not work this alloy below 1742°F (950°C). If the final forming temperature falls below this threshold, a solution anneal of 1976 – 2156°F (1080 – 1180°C) is necessary. Rapid quenching is required.
Applications:
TISCO 317L Stainless Steel Sheets is manufactured by the well-known brand TISCO. It is made of high quality 317L stainless steel, which is highly resistant to corrosion and rust. The material meets ASTM, AISI, DIN, EN, GB, JIS standards. The MOQ of this product is 1 Ton. It is packaged in a standard export package. The width is available in 1000mm, 1219mm, 1500mm, 2000mm.
TISCO 317L Stainless Steel Sheets is widely used in many fields such as chemical, pharmaceutical, food and beverage, dairy, brewing, automotive, aerospace, and architecture. It is a great choice for construction, kitchen and bathroom applications, and is also used for heat exchangers, boilers, tanks, and pressure vessels. It is an ideal material for medical equipment and medical instruments. It has excellent durability and strength, and can be easily machined and formed.
TISCO 317L Stainless Steel Sheets is a reliable and economical choice for many applications. It has excellent corrosion resistance and is highly resistant to rust. It is easy to clean and maintain, and is resistant to high temperatures. It is an excellent choice for many industries and applications. TISCO is a trusted and reliable manufacturer that provides high quality products that meet the highest standards.
Customization:
317L Stainless Steel Sheets
Brand Name: TISCO
Model Number: 317L
Place of Origin: China
Surface: 2B, BA, 8K, No.4, HL, Embossed
Standard: ASTM, AISI, DIN, EN, GB, JIS
Application: Decoration, Construction, Industry, Etc.
Length: 2000mm, 2438mm, 2500mm, 3000mm, 6000mm
Width: 1000mm, 1219mm, 1500mm, 2000mm
TISCO 316L Stainless Steel Sheets are made of high-quality stainless steel material with a surface finish of 2B, BA, 8K, No.4, HL, and Embossed. It is perfect for applications such as decoration, construction, and industry with standards of ASTM, AISI, DIN, EN, GB, JIS. It is available in various sizes and lengths such as 2000mm, 2438mm, 2500mm, 3000mm, 6000mm in widths of 1000mm, 1219mm, 1500mm, and 2000mm.
Support and Services:
We provide professional technical support and service for 317L Stainless Steel Sheets.
Our technical support team is available 24/7 to answer any questions and provide assistance. We also offer free consultations and on-site services to help you with any installation or maintenance needs.
We provide a warranty for all our products, and if anything goes wrong, we will provide a replacement or repair as soon as possible.
We offer a variety of custom solutions to meet your specific needs, and we can work with you to create a solution that fits your budget and timeline.
