A chromium-nickel-molybdenum austenitic stainless steel.
tainless steel types 1.4401 (also known as grade 316) is an austenitic grade second only to 304 in commercial importance. It has similar mechanical properties to 304 but is stronger at elevated temperatures.
316 stainless steel contains an addition of molybdenum that gives it improved corrosion resistance. This is particularly apparent for pitting and crevice corrosion in chloride environments. The austenitic structure of 316 stainless steel gives excellent toughness, even at cryogenic temperatures.
Property data given in this document is typical for bar and section products covered by EN standards. ASTM, EN or other standards may cover all products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.
Quarto Plate is hot rolled plate over 12mm thick that has not been coiled during production. CPP is Continuously Produced Plate up to 12mm thick that has been coiled during rolling. Sheet is Cold Rolled.
Property data given in this document is typical for flat rolled products covered by EN standards. ASTM, EN or other standards may cover all products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.
If you do not see what you are looking for, please contact your local service centre with your specific requirements.
Stainless steel grade 1.4401/316 also corresponds to the following designations but may not be a direct equivalent:
0.00 - 0.07
16.50 - 18.50
2.00 - 2.50
0.00 - 1.00
0.00 - 0.05
0.00 - 0.02
10.00 - 13.00
0.00 - 2.00
0.00 - 0.11
Bar & Section Up to 160mm Dia / Thickness
200 Min MPa
500 to 700 MPa
Elongation A50 mm
40 Min %
215 Max HB
Sheet Up to 8mm Thick
240 Min MPa
530 to 680 MPa
Elongation A50 mm
40 Min %
Plate From 8mm to 75mm Thick
220 Min MPa
520 to 670 MPa
Elongation A50 mm
45 Min %
General Physical Properties
15.9 x 10-6/K
Modulus of Elasticity
0.74 x 10-6 Ω .m
Food processing equipment
Chemical and petrochemical equipment
Laboratory benches & equipment
Coastal architectural panelling
Chemical transportation containers
Nuts and bolts
Excellent corrosion resistance when exposed to a range of corrosive environments and media
Fusion welding performance for 316 stainless steel is excellent both with and without fillers. Recommended filler rods and electrodes for 316 and 316L are the same as the base metal, 316 and 316L respectively. Heavy welded sections may require post-weld annealing. Grade 316Ti may be used as an alternative to 316 in heavy section welds.
Oxyacetylene welding has not been found to be successful for joining of 316 stainless steel.
Fabrication of all stainless steels should be done only with tools dedicated to stainless steel materials. Tooling and work surfaces must be thoroughly cleaned before use. These precautions are necessary to avoid cross contamination of stainless steel by easily corroded metals that may discolour the surface of the fabricated product.
316 stainless steel cannot be hardened by heat treatment.
Solution treatment or annealing can be done by rapid cooling after heating to 1010-1120°C.
Grade 316 is readily brake or roll formed into a variety of parts. It is also suited to stamping, heading and drawing but post work annealing is recommended to relieve internal stresses.
Cold working will increase both strength and hardness of 316 stainless steel.
316 has good resistance to oxidation in intermittent service to 870°C and in continuous service to 925°C. However, continuous use at 425-860°C is not recommended if corrosion resistance in water is required. In this instance 316L is recommended due to its resistance to carbide precipitation.
Where high strength is required at temperatures above 500°C, grade 316H is recommended.
All common hot working processes can be performed on 316 stainless steel. Hot working should be avoided below 927°C. The ideal temperature range for hot working is 1149-1260°C. Post-work annealing is recommended to ensure optimum corrosion resistance.
316 stainless steel has good machinability. Machining can be enhanced using the following rules:
Cutting edges must be kept sharp. Dull edges cause excess work hardening.
Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material.
Chip breakers should be employed to assist in ensuring swarf remains clear of the work
Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.
Grade 316 has excellent corrosion resistance when exposed to a range of corrosive environments and media. It is usually regarded as “marine grade” stainless steel but is not resistant to warm sea water. Warm chloride environments can cause pitting and crevice corrosion. Grade 316 is also subject to stress corrosion cracking above around 60°C.