Wear-Resistant Austenitic Steels
X12CrNi23-13 – 1.4833 / SUS309S / Z15CN23-13 / 20KH23N13 / 309S
X12CrNi23-13 – 1.4833 stainless steel belongs to the group of austenitic stainless steels and is specifically designed for applications requiring high-temperature resistance and excellent oxidation resistance. Commonly known as 309S, this grade is the low-carbon version of 309 stainless steel. The “S” designation indicates reduced carbon content, which minimizes the risk of intergranular corrosion, particularly in welded applications.
This steel typically contains approximately 22–24% chromium and 12–14% nickel. The high chromium content forms a protective oxide layer on the surface, providing strong resistance to oxidation at elevated temperatures. Nickel stabilizes the austenitic structure, ensuring that the material retains its ductility and toughness even at high temperatures. These characteristics allow reliable performance at temperatures up to approximately 1000°C.
X12CrNi23-13 steel is particularly suitable for long-term service in high-temperature environments. Its low carbon content reduces the risk of carbide precipitation after welding, making it a reliable choice for welded constructions exposed to heat.
From a mechanical standpoint, this grade offers good strength and ductility at elevated temperatures. It is suitable for both hot and cold forming processes and provides excellent weldability, allowing it to be easily adapted to various manufacturing methods.
In addition to its technical performance, 1.4833 stainless steel also features a smooth and bright surface finish, making it suitable for both industrial and decorative applications.
Overall, X12CrNi23-13 – 1.4833 (309S) stainless steel provides a reliable and long-lasting solution for demanding applications requiring high-temperature stability and oxidation resistance.
Main Application Areas
- Industrial furnaces and heat treatment equipment
- High-temperature boilers and burner systems
- Exhaust systems and heat-exposed components
- Heat exchangers and process equipment
- Chemical and petrochemical plants
- Equipment used in power generation plants
- High-temperature piping and duct systems
- Metallurgical and foundry applications
- High-heat components in the automotive industry
Thanks to these properties, X12CrNi23-13 – 1.4833 (309S) stainless steel is widely preferred as a reliable engineering material for high-temperature and demanding industrial environments.
General Identity
X12CrNi23-13 – 1.4833
| Grade | X12CrNi23-13 |
| Number | 1.4833 |
| Classification | Austenitic Heat-Resisting Steel |
Equivalent Grades
X12CrNi23-13 – 1.4833
| USA | 309S
S30908 |
| Japan, JIS | SUS309S |
| France, AFNOR | Z15CN23-13 |
| Enland, BS | 309S16 |
| Russia, GOST | 20KH23N13 |
Standards
X12CrNi23-13 – 1.4833
| Standard 1 | EN 10095: 1999 |
| Standard 2 | EN 10296-2: 2005 |
| Standard 3 | EN 10297-2: 2005 |
| Standard 4 | N 10088-2: 2005 |
Chemical Composition
X12CrNi23-13 – 1.4833
| C | max 0.015 |
| Si | max 1.00 |
| Mn | max 2.00 |
| Ni | 12 – 14 |
| P | max 0.045 |
| S | max 0.015 |
| Cr | 22 – 24 |
| N | 0.11 |
Mechanical Properties
X12CrNi23-13 – 1.4833
| Rm – Tensile strength (MPa) (+AT) | 500 – 700 |
| Rp0.2 0.2% proof strength (MPa) (+AT) | 210 |
| A – Min. elongation at fracture (%) transverse., (+AT) | 33 – 35 |
| Birinel hardness (HB) (+AT): | 192 |
