Stainless Steel 317L | WNR 1.4438 | AISI 317L | SUS317L | Alloy 317L | UNS S31703

317L Stainless Steel

317L Stainless Steel | EN 1.4438 | AISI 317L Stainless Steel | X2 CrNiMo 18 16 4 | SS2367 |  Z2CND1915 | 317S12 | X2CrNiMo1815 | J317L | 00Cr19Ni13Mo3 | Alloy 317L | Z3CND19-15-04 | SUS 317L | 03X16H15M3

Stainless Steel 317L (1.4438) with UNS S31703 is an austenitic stainless steel that gives the ideal corrosion resistance and has very low carbon content. 317L Stainless Steel (AISI 317L) is majorly used in thermal and welding processes. 317L (SUS317L) is an “L” grade stainless steel and is molybdenum. In the annealed condition it is non-magnetic and gets magnetic when welded. In the pulp and paper mills, Alloy 317L (317S12) shows good resistance due to the excess acidic surrounding.

317L Stainless Steel Properties

AISI 317L Stainless Steel has special properties typical to the product. The following sums up the qualities of SS2367.

  • 317L has good corrosion resistance.
  • In acidic chloride environments, 317L SS has greater corrosion.
  • The resistance is high with molybdenum alloy percentage.
  • SS317L is resistant to sulphuric acid at around 120 degrees Fahrenheit.
  • 317L Stainless Steel has good formability and weldability.

Stainless Steel 317L Applications

This brand of Stainless Steel is used in flue gas desulfurization systems and is also a regular component in petrochemical industries. The chemical process vessels and pulp and paper industry also use SS 317L (EN 1.4438). It is also used in condensers in power generation.

SS317L Resistance and Processing

Corrosion Resistance

317L Stainless Steel has Superior Corrosion Resistance in difficult environments,  especially in acidic chloride environments. 317L SS  ( UNS S31703) highly resistant to intergranular corrosion because of Low carbon content. Excellent resistance in applications where contamination is desired to be kept to a minimum. 317L in contact with phosphorus acids, chlorides, bromides, and iodides, has pitting tendency.

Heat Resistance

Stainless Steel Grades like 317L (1.4438) with chromium-nickel-molybdenum (X2CrNiMo18164) has excellent resistance to oxidation. AISI 317 L also demonstrates a low rate of scaling at temperatures up to 1600-1650°F (871-899°C).


Grade 317L SS is tougher than other grades of Stainless Steel. Thus, it is advised to use chip breakers so that the hardenability of this alloy is considerably brought down with the help of low speeds and constant feeds.


317L can be welded by conventional welding procedures except oxyacetylene.

Hot Working

AISI 317L Stainless Steel can be hot worked in the range of 926.7°C – 1204.5°C. 317L Forgings can be annealed at 1037°C.

Cold Working

This process involves stamping, drawing, shearing as well as heading which is done successfully. The post work annealing is normally done to bring down the internal stress. Cold Working increases the strength and hardness of the material

Annealing and Hardening

Annealing is usually done at 1010-1121°C (1850-2050°F) which is then followed by cooling. Hardening normally does not react to any kind of treatment and is hardened by the working of cold treatment.

Forms of Stainless Steel 317L

SS317L Chemical Composition :

Element:Content (%)
Cr 18.0 - 20.0
Ni11.0 -15.0
Mo3.0 - 4.0

SS317L Mechanical Properties :

Yield Strength
0.2% Offset
psi (min.)30, 000
Ultimate Tensile
psi (min.)75, 000
in 2 in.
% (min.)40
Hardness(max.)95 Rockwell B

SS317L  Physical Properties :

Density7.89 g/cm^3
Specific Heat0.12 BTU/lb-°F (32 – 212°F)
Modulus of Elasticity29.0 x 10^6 psi
Thermal Conductivity 200°F (100°C)8.7 BTU/hr/ft^2/ft/°F
Melting Range
2540 – 2630°F
Electrical Resistivity33.5 Microhm-in at 68°C

SS317L Applications :

  • Chemical / petrochemical processing
  • Equipment for pollution control (flue gas desulfurization) Plants
  • Waste disposal industries
  • Sulfuric acid reactors.
  • Organic chloride process equipment.
  • Equipment for processes utilizing halide or acid catalysts.
  • Pulp and paper processing

 Equivalent Grades and Other Names of SS 317L :

  • Sandvik 3R64
  • 317L
  • EN 1.4438
  • WNR 1.4438
  • UNS S31703
  • AISI 317 L
  • SUS317L
  • Alloy 317L
  • Germany – DIN X2CrNiMo1815 / X2CrNiMo18164
  • Sweden – SS2367
  • UK – BS 317S12
  • J-317L
  • Chinese – 00Cr19Ni13Mo3
  • France AFNOR – Z3CND19-15-04 / Z2CND1915
  • Russia Gost – 03X16H15M3

Case Study:

Once we had a very strange situation where a client needed Stainless Steel 317L but had a very low requirement. For the customers, the supplier is the king and when they need lesser quantity it is quite difficult for them to procure it at a short request. This is the situation that a customer once encountered. He approached us after approaching many others who refused to give him a small quantity of goods. Siddhagiri Metals and Tubes believes in serving the customer and customer service is our priority. Even if it was a minimal requirement we made sure that the customer does not go empty handed. We had to procure the goods from abroad for the purpose but we did not hesitate to do this as we felt the customer’s needs have to be taken care of. This is a typical situation where our customer was given priority over everything else and thus went down in the history of case studies as an important one. Usually others charge an extra price for such deliveries but we made sure that there is no extra pricing instead offered him a deal of taking stock from us the next time with a discount.

Siddhagiri Metals and Tubes, Alloy 317L Supplier Manufacturer:

Siddhagiri Metals and Tubes have been regular distributors of Stainless Steel and Alloy Steel Products since long. We have been professional manufacturers as well as suppliers of the best kinds of products. Siddhagiri Metals and Tubes excel in providing the best needs of the customers and also cater to the needs of the clients in the best way possible. Siddhagiri Metals and Tubes aims at giving special services which ensure the customers are satisfied and also make sure that there are unique ways to keep the interaction beneficial to the customers always. Siddhagiri Metals and Tubes confidence and expertise are one of the reasons why we stand out in a market of stainless steel. The customer is king for us, and we ensure that there is a lot of dedication and discipline in our work. Siddhagiri Metals and Tubes inspect the units personally and avoid all mistakes. Emphasis is laid on providing a very environment-friendly output and make sure Nature is not harmed. Siddhagiri Metals and Tubes customers are across the world and have a wide diaspora of clients globally.

Benefits of Being With Us

When it comes to fast delivery of the products we are experts and have never have had a rejection record. Siddhagiri Metals and Tubes strive to provide the customer what he seeks and have a huge collection of information data with contented and happy customers. Siddhagiri Metals and Tubes have our head offices and their sub-offices which ensure that the service is the best from our side.

What Does Siddhagiri Metals Do For you ?

Siddhagiri Metals would emphasize on the brand specialisation of 317 L and it has a high product demand which ensures that there is sufficient welding for fabrication. Siddhagiri Metals and Tubes products are all popular and well known because of their tough and formidable nature. Siddhagir Metals 317L brand are popular for having the best product supply around the world. Wee provide the best kind of packaging and packing facilities so that the products can be sent worldwide. Siddhagiri Metals and Tubes have the best kind of quality test as well as control and aim to get the best perfection through our regular follow-up methods. With a competitive price, our consultancy arrangments also are an impetus to enhance relations with us.

What Problems Could a Customer Face with us?

Any transaction can never be with zero error. So customers usually do face problems with us and they could be the following

  • Product may not be available
  • The packaging could have a problem.
  • Delivery may be delayed
  • The performance of the product may not be up to expectation.
  • The standards may be inconsistent.

How Do We Help Our Customers?

We aim at providing the customer what they expect from us. So we make sure we provide the best kind of service too. There is a benefit in being with Siddhagiri Metals.

  • We produce the best quality goods and the standards are never compromised.
  • We have the ideal stock of 317L and we are in fact the single most source.
  • Our track record and customer reliability quotient are unbeatable.
  • We rarely have our customers rejecting our goods and with a committed team, our company aims to provide ultimate customer satisfaction.
  • There is a Digital Test Mill report which conducts a third party inspection which enhances our service.
  • We provide quick, fast and reliable service.
  • Our after sales support team is incomparable.
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Stainless Steel 317lL (UNS S31703)
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