Deep Drawing Austenitic Steels
X2CrNiN18-10 – 1.4311 / SUS304LN / Z3CN18-10Az / 304S61 / 2371
X2CrNiN18-10 – 1.4311 stainless steel belongs to the group of austenitic stainless steels and is designed to provide enhanced strength together with improved corrosion resistance. Commonly known as 304LN, this grade is a nitrogen-alloyed version of standard 304L stainless steel. The addition of nitrogen increases mechanical strength while also improving performance in certain demanding environments.
This steel typically contains approximately 18–20% chromium, 8–11% nickel, and controlled amounts of nitrogen. The presence of nitrogen enhances the material’s yield strength and contributes positively to its resistance to pitting corrosion. Its low carbon content (L grade) minimizes the risk of intergranular corrosion after welding, making it particularly suitable for welded structures.
Compared to 304L, X2CrNiN18-10 (304LN) offers higher yield strength, which allows the use of thinner sections while maintaining equivalent mechanical performance. This makes it highly advantageous in applications where weight optimization is important. At the same time, it retains high ductility, ensuring good resistance to impact and deformation.
This steel grade is suitable for both hot and cold forming processes and provides excellent weldability, allowing it to be easily integrated into various manufacturing methods. It also offers a high-quality surface finish, delivering a bright and aesthetic appearance suitable for both industrial and architectural applications.
In terms of corrosion resistance, it performs very well in general environments, and the combination of low carbon and nitrogen alloying results in a material that is both durable and long-lasting.
Main Application Areas
- Chemical and process industry equipment
- Welded stainless steel constructions
- Pressure vessels and tank systems
- Food and beverage production equipment
- High-strength components in the automotive industry
- Piping and pipeline systems
- Architectural and decorative applications
- Equipment used in the energy sector
- Engineering projects requiring weight optimization
Thanks to these properties, X2CrNiN18-10 – 1.4311 (304LN) stainless steel stands out as an advanced engineering material, offering a combination of high strength and corrosion resistance for modern industrial applications.
General Identity
X2CrNiN18-10 – 1.4311
| Grade | X2CrNiN18-10 |
| Number | 1.4311 |
| Classification | Austenitic Stainless Steel |
Equivalent Grades
X2CrNiN18-10 – 1.4311
| USA | 304LN |
| Japan, JIS | SUS304LN |
| France, AFNOR | Z3CN18-10Az |
| England, BS | 304S61 |
| Sweden, SS | 2371 |
Standards
X2CrNiN18-10 – 1.4311
| Standard 1 | EN 10088-2: 2005 |
| Standard 2 | EN 10088-3: 2005 |
| Standard 3 | EN 10028-7: 2007 |
| Standard 4 | EN 10222-5: 2000 |
| Standard 5 | EN 10216-5: 2014 |
| Standard 6 | EN 10217-7: 2005 |
| Standard 7 | EN 10296-2: 2005 |
| Standard 8 | EN 10253-3: 2008 |
| Standard 9 | EN 10253-4: 2008 |
| Standard 10 | EN 10272: 2007 |
| Standard 11 | EN 10250-4: 2000 |
| Standard 12 | EN 10297-2: 2005 |
| Standard 13 | EN 10088-1: 2005 |
| Standard 14 | EN 10088-4: 2009 |
| Standard 15 | EN 10088-5: 2009 |
Chemical Composition
X2CrNiN18-10 – 1.4311
| C | max 0.3 |
| Si | max 1.00 |
| Mn | max 2.00 |
| Ni | 8 – 11.5 |
| P | max 0.045 |
| S | max 0.015 |
| Cr | 17.5 – 19.5 |
| N | 0.12 – 0.22 |
Mechanical Properties
X2CrNiN18-10 – 1.4311
| Rm – Tensile strength (MPa) (+A) | 550 – 760 | |
| Rm – Tensile strength (MPa) (+AT) | 550 – 760 | |
| Rp0.2 0.2% proof strength (MPa) (+AT) | 270 | |
| Rp0.2 0.2% proof strength (MPa) (+A) | 270 – 305 | |
| KV – Impact energy (J) transverse (+A) | +20° – 60 | -196° – 60 |
| KV – Impact energy (J) longitud (+A) | +20° – 100 | |
| A – Min elogation at fracture (%) (+A) | 30 – 40 | |
| A – Min. elongation at fracture (%) longitud., (+AT) | 35 – 45 | |
| Birinel Sertlik (HB) (+A): | 230 | |
| Birinel Sertlik (HB) (+AT): | 210 | |
