309S
309S Heat Resistnat Austenitic Stainless Steel

What is 309S Heat Resistnat Austenitic Stainless Steel?
Grade 309S heat resistnat austenitic stainless steel, also referred to as the UNS S30908/W.Nr. 1.4833 alloy.
309S stainless steel is a close variant of 309 (UNS S30900/W.Nr. 1.4828).
This heat resistant austenitic stainless steel offers excellent resistance to corrosion and oxidation. The lower carbon content minimizes carbide precipitation in the heat zone of the welds and thus avoid inter granular corrosion which can otherwise happen in the welds.
309S is non-magnetic after annealed and presents weak magnetism as cold worked.
Grade 309S stainless steel is available in all standard mill forms including pipe, rod, bar, plate, sheet, strip and foil products.
309S Austenitic Stainless Steel Standards
ASTM A240
ASME SA240
ASTM A312
AMS 5523
309S Austenitic Stainless Steel Chemical Composition

309S Austenitic Stainless Steel Data Sheet
309S Austenitic Stainless Steel Equivalent Grades
ASTM/AISI | WERKSTOFF NR. | UNS | GOST | GB | JIS | DIN | EN | OR |
Alloy 309S | 1.4833 | S30908 | – | 06Cr23Ni13 | SUS309S | – | – | – |
309S Austenitic Stainless Steel Mechanical Properties
Density | Melting Range | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
7.89 g/cm3 | 1399 – 1454°C | ≥586Mpa | ≥310Mpa | ≥50% |
309S Austenitic Stainless Steel Applications
309S Austenitic Stainless Steel Related Resources
254 SMO stainless steel is the super austenitic stainless steel. Due to the high molybdenum content, it has extremely high resistance to pitting corrosion and crevice corrosion. This grade of stainless steel is also known as UNS S31254. This grade of stainless steel was developed and designed for containing halide application such as seawater. 254 […]
253 MA stainless steel excels in both performance at elevated temperatures and ease of fabrication, making it a versatile grade. Low austenitic stainless steel 253 MA has exceptional oxidation resistance and excellent strength. 253 MA stainless steel keeps its heat-resistant capabilities. Up to 2000°F, rare earth metals combined with silicon provide outstanding oxidation resistance. This […]
Are you looking forward to having a plan or coming up with an idea to buy quality nickel based alloys products from global leading suppliers? If yes, here you’ve come to the right place. There are many nickel based alloys manufacturers worldwide, but we discuss the top 10 trustworthy suppliers of nickel based alloys here. […]
Get A Free Quote Now
Got a question? Contact our team!
Looking For a Trust Nickel Alloys & Stainless Steel Manufacturer?
At SEATHER, we are experts in the field of alloys manufacturing. As such, we offer a variety of services to ensure your project is formed to your exact requirements.