Stainless Steel, AusteniticS31700 (317) Sheet & Plate

A modified version of Type 316 stainless steel with high strength and corrosion resistance.

Type 317 is an austenitic chromium-nickel stainless steel with excellent corrosion resistance; Its high Molybdenum content enhances the grade's superior pitting resistance. It was designed to be a higher strength alternative to the 316 grades.

Composed of larger amounts of chromium, nickel and molybdenum, alloy 317 also is more corrosion resistant compared to 316, and tougher than Type 304. This is the due to the high percentage of iron in its composition, which is much higher than many stainless steels.

This combination of iron with the chromium-nickel-molybdenum content yields a strong alloy.

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Related Specifications

EN 1.4438

Properties

Chemical Composition

Chemical Element	% Present
Carbon (C)	0.00 - 0.08
Chromium (Cr)	18.00 - 20.00
Nickel (Ni)	11.00 - 15.00
Manganese (Mn)	0.00 - 2.00
Phosphorous (P)	0.00 - 0.04
Sulphur (S)	0.00 - 0.03
Silicon (Si)	0.00 - 0.75
Molybdenum (Mo)	3.00 - 4.00
Nitrogen (N)	0.00 - 0.10
Iron (Fe)	Balance

Mechanical Property	Value
Proof Stress	205 Min MPa
Tensile Strength	515 Min MPa
Elongation A50 mm	35 Min %

Applications

Screens for marine and chemical applications
Pulp and paper applications
Marine components
Food processing
Seals and other components for the oil and gas industry

Characteristics

The most corrosion resistant stainless steel
Highest tensile and creep strength properties at elevated temperatures
Superior pitting resistance
High stress to rupture ratio

Additional Information

Machinability

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Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.