Basic Austenitic Steels
X10CrNi18-8 – 1.4310 / 301 / X12CrNi17-7 / SUS301 / Z11CN18-08-09 / 301S21-26 / 2331 / X9CrNi18-8
X10CrNi18-8 – 1.4310 stainless steel belongs to the group of austenitic stainless steels and is widely used in applications requiring high strength and excellent elasticity. It is internationally recognized under different standards such as AISI 301, SUS301 in Japan, and 1.4310 in Europe, while maintaining essentially the same properties. This steel typically contains approximately 17–18% chromium and 6–8% nickel, providing a well-balanced combination of corrosion resistance and mechanical strength.
One of the most distinctive features of 301 stainless steel is its ability to harden through cold working. As the material undergoes deformation, its strength increases significantly, allowing it to reach very high tensile strength levels. At the same time, it offers excellent elasticity, making it particularly suitable as a spring-grade stainless steel. When used in thin sheet or strip form, it exhibits strong spring-back characteristics, which are highly valuable in precision applications.
This steel grade provides good corrosion resistance, although it is slightly lower than that of AISI 304 stainless steel. However, it compensates for this with its higher strength capability, making it ideal for applications where both durability and flexibility are required. It is also weldable, although cold working is generally preferred in applications where maximum strength is desired.
X10CrNi18-8 – 1.4310 steel demonstrates high performance even in thin sections, enabling the production of lightweight yet durable components. It is widely used in industries such as automotive, household appliances, and electronics. In addition, its smooth surface quality and bright appearance make it suitable for decorative applications.
In summary, this stainless steel grade combines corrosion resistance, high strength, and elasticity, making it a key material in modern engineering applications. It is especially valued in applications requiring spring properties and long-term reliability.
Main Application Areas
- Production of stainless springs and strip springs
- Elastic metal components in the automotive industry
- Household appliances and electronic components
- Clamps, clips, and fastening elements
- Thin sheet and strip metal parts
- Decorative and aesthetic metal applications
- Certain components used in food processing equipment
- Lightweight and durable structural elements
- Various industrial machine components
Thanks to these characteristics, X10CrNi18-8 – 1.4310 (AISI 301) stainless steel is widely preferred as a high-performance material in applications requiring strength, flexibility, and corrosion resistance.
General Identity
X10CrNi18-8 – 1.4310
| Grade |
X10CrNi18-8 |
| Number |
1.4310 |
| Classification |
Austenitic stainless steel |
Equivalent Grades
X10CrNi18-8 – 1.4310
| USA |
301 |
| Germany, DIN |
X12CrNi17-7 |
| Japan, Jis |
SUS301 |
| France, AFNOR |
Z11CN18-08 Z11CN18-09 |
| England, BS |
301S21 302S26 |
| Sweden, SS |
2331 |
Inter, ISO |
X9CrNi18-8 |
Standards
X10CrNi18-8 – 1.4310
| Standard 1 |
EN 10088-2: 2005 |
| Standard 2 |
EN 10088-3: 2005 |
| Standard 3 |
EN 10151: 2003 |
| Standard 4 |
EN 10263-5: 2001 |
| Standard 5 |
EN 10088-1: 2005 |
Chemical Composition
X10CrNi18-8 – 1.4310
| C |
0.50 – 0.15 |
| Si |
max 2.00 |
| Mn |
max 2.00 |
| Ni |
6 – 9.5 |
| P |
max 0.045 |
| S |
max 0.015 |
| Cr |
16 – 19 |
| Mo |
max 0.8 |
| N |
max 0.11 |
Mechanical Properties
X10CrNi18-8 – 1.4310
| Rm – Tensile strength (MPa) (+A) |
500 – 750 |
| Rm – Tensile strength (MPa) (+AT+C) |
850 – 890 |
| Rp0.2 0.2% proof strength (MPa) (+A) |
195 – 250 |
| A – Min. elongation at fracture (%) (+A) |
40 |
| Nominal diameter (mm) |
2 – 25 |
| Z – Reduction in cross section on fracture (%) |
60 – 65 |
| Birinel hardness (HB) (+A): |
230 |
