UNS Number S31600 / S31603

Stainless Steel 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade 316 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm).
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

 

Available Forms of Stainless Steel 316/316L at Rooplaxmi Steels:

•           Sheet
•           Plate
•           Bar
•           Pipe & Tube (welded & seamless)
•           Fittings
•           Wire

 

Characteristics of Stainless Steel 316/316L:

Stainless Steel 316 Chemical Composition, %:

C	Mn	Si	P	S	Cr	Mo	Ni
0.08 max	2.0 max	0.75 max	0.045 max	0.03 max	16.0-18.0	2.0-3.0	10.0-14.0

 

N

0.10 max

Stainless Steel 316L Chemical Composition, %:

C	Mn	Si	P	S	Cr	Mo	Ni
0.03 max	2.0 max	0.75 max	0.045 max	0.03 max	16.0-18.0	2.0-3.0	10.0-14.0

 

N

0.10 max

 

Application of Stainless Steel 316/316L:

•           Food preparation equipment particularly in chloride environments.
•           Laboratory benches & equipment.
•           Coastal architectural panelling, railings & trim.
•           Boat fittings.
•           Chemical containers, including for transport.
•           Heat Exchangers.
•           Woven or welded screens for mining, quarrying & water filtration.
•           Threaded fasteners.
•           Springs.

Machining and Fabrication with Stainless Steel 316/316L:

Solution Treatment (Annealing) - Heat to 1010-1120 °C and cool rapidly. These grades cannot be hardened by thermal treatment. Excellent weldability by all standard fusion methods, both with and without filler metals.

 

Welding Wire Designations:
USA AWS A5.9 – ER 316 , ER 316L

 

Mechanical Properties of Stainless Steel 316/316L:
At Room Temperature

	Stainless Steel 316	Stainless Steel 316L
Tensile Strength	515 Mpa min	485 Mpa min
Yield	(0.2 % offset) 205 Mpa min	(0.2 % offset) 170 Mpa min
Elongation (in 50 mm)	40 % min	40 % min