Features
309S corresponding to the Chinese brand is 0Cr23Ni13, the American standard S30908 (AISI, ASTM) characteristics and use: corrosion resistance, heat resistance are better than 0Cr19Ni9.
The 309S is a variant of the lower carbon 309 stainless steel for use where soldering is required.
The lower carbon content minimizes the precipitation of carbides in the heat affected zone near the weld, which may lead to intergranular corrosion (welding erosion) of stainless steel in some environments.
It can withstand repeated heating below 980 ℃, and has high high temperature strength, oxidation resistance and carburizing resistance.
309S stainless steel strip is widely used in important fields such as boilers, energy (nuclear power, thermal power, fuel cells), industrial furnaces, incinerators, heating furnaces, chemical industry, petrochemicals industry, etc.
Mechanical Properties Typical Values at 68°F (20°C)
| Yield Strength 0.2% Offset |
Ultimate Tensile Strength | Elongation in 2 in. |
Hardness | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 45,000 | 310 | 85,000 | 586 | 50 | 202 (HBN) |
Equivalent Material
| Grade | DIN | GB | JIS | ASTM | UNS | EN |
| 309S | 1.49505 | 0Cr23Ni13 | SUS309S | S30908 | 309S | X6CrNi23-13 |
Properties
Grade 309S stainless steel can be machined similar to that of 304 stainless steel.
Grade 309S stainless steel can be welded using fusion or resistance welding methods. Oxyacetylene welding method is not preferred for welding this alloy.
Grade 309S stainless steel is hot worked at 1177°C (2150°F) followed by reheating at 982°C (1800°F). It can be then quenched rapidly. Post-work annealing can be done to restore its corrosion resistance property.
Grade 309S stainless steel can be headed, upset, drawn, and stamped even though it has high work hardening rate. Annealing is performed after cold working in order to reduce internal stress.
Grade 309S stainless steel is annealed at 1038-1121°C (1900-2050°F) followed by quenching in water.
Grade 309S stainless steel does not react to heat treatment. Strength and hardness of this alloy can be increased by cold working.
Packaging
We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as:
