The molybdenum addition is the whole point of 316: it substantially raises resistance to pitting and crevice attack in chloride environments, which is why 316 dominates marine, chemical and pharmaceutical service. 316L caps carbon for welded fabrication. It is not, however, immune to chlorides — in hot seawater or concentrated brine the grade still pits, and duplex or 904L becomes the correct specification.
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
Rajgranth Metal & Alloys manufactures, stocks, supplies and exports Stainless Steel 316 and 316L rings (UNS S31600 / S31603) from Mumbai. 304 plus 2–3% molybdenum. The standard answer to chlorides and mild acids. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.
The molybdenum addition is the whole point of 316: it substantially raises resistance to pitting and crevice attack in chloride environments, which is why 316 dominates marine, chemical and pharmaceutical service. 316L caps carbon for welded fabrication. It is not, however, immune to chlorides — in hot seawater or concentrated brine the grade still pits, and duplex or 904L becomes the correct specification.
Stainless Steel 316 and 316L is also designated UNS S31600 / S31603, EN 1.4401 / 1.4404, AISI 316 / 316L, JIS SUS316 / SUS316L, GB S31608 / S31603 and Werkstoff X5CrNiMo17-12-2 / X2CrNiMo17-12-2. Quote the designation your specification uses and we will supply to it.
Strong pitting and crevice resistance in chloride service, Good resistance to a broad range of process chemicals, Retains strength and toughness at cryogenic temperatures and Pharmaceutical and food-contact approved. It is non-magnetic, with excellent weldability and fair machinability, and is used in continuous service in air up to about 870 °C.
Still pits in hot or concentrated chloride solutions, Vulnerable to chloride stress corrosion cracking above roughly 60 degrees C, Around a third more expensive than 304 for the same section and Poor resistance to reducing acids such as hydrochloric. We state these plainly so the grade is chosen for the right service.
Our published range covers outside diameter 100 mm, 2500 mm, height 20 mm, 600 mm and condition Rough forged, Proof machined. Standards include ASTM A182 / ASME SA-182, ASTM A965 and EN 10250-4. Finishes and conditions include Black, Proof machined and Machined.
marine and offshore fittings, chemical and petrochemical process lines, pharmaceutical and sanitary equipment, heat exchanger and condenser tube, pulp and paper equipment and coastal architectural work. Typical industries: chemical, petrochemical, pharmaceutical, marine & shipbuilding, oil & gas and paper & pulp. We supply across India and export to markets in the Middle East, Africa, Europe, Asia, North America and South America.
Material is supplied with documentation, tested in house across 18 listed testing facilities, and covered by our ISO 9001:2015 quality management system. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.
Send the size, quantity and standard. We will confirm availability against stock and come back with price.
