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 240Corrosion 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/cm3Specific 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 GPaThermal 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°CElectrical Resistivity
33.5 Microhm-in at 68°C
85.1 Microhm-cm at 20°CMean 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.
