Material 1.4310 (X10CrNi18-8 steel) is a European standard austenitic stainless steel with good corrosion resistance and weldability, as well as high strength and ductility, it is widely used in the production of high strength stainless steel springs. DIN EN 1.4310 spring steel equivalent grades include AISI 301, JIS SUS301, GB 12Cr17Ni7.
The following tables summarize stainless steel 1.4310 datasheet and specification, including chemical composition, mechanical properties, physical properties and heat treatment.
The following table lists the material 1.4310 chemical composition based on the heat analysis.
Datasheet -1, Chemical Composition
| Chemical Composition % | ||||||||||
| Standard | Steel Grade (Steel Number) | C | Si, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Cr | Ni | Mo, ≤ | N, ≤ |
| EN 10088-2; EN 10088-3 | X10CrNi18-8 (1.4310) | 0,05-0,15 | 2,00 | 2,00 | 0.045 | 0,015 | 16,0-19,0 | 6,0-9,5 | 0,80 | 0,10 |
Datasheet 2: Material 1.4310 mechanical properties at room temperature in the solution-annealed condition and resistance to intergranular corrosion.
| Mechanical properties (Solution annealed) | |||||||||
| Country (Region) | Standard | Steel Grade (Steel Number) | Diameter (d) or Thickness (t) in mm | Hardness (HB), ≤ | 0.2% proof strength (MPa), ≥ | 1% proof strength (MPa), ≥ | Tensile strength (MPa) | Elongation (%) | Resistance to intergranular corrosion |
| European Union | EN 10088-3 | X10CrNi18-8 (1.4310) | ≤40 | 230 | 195 | 230 | 500-750 | 40 | No |
| Mechanical properties (Solution annealed) | |||||||||
| Country (Region) | Standard | Steel Grade (Steel Number) | Product Condition | Thickness (mm), ≤ | 0,2 % proof strength (Mpa), ≥, (Transverse) | 1 % proof strength (Mpa), ≥ (Transverse) | Tensile strength (MPa) | Elongation (%), ≥, (Transverse) | Resistance to intergranular corrosion |
| European Union | EN 10088-2 | X10CrNi18-8 (1.4310) | cold rolled strip | 8 | 250 | 280 | 600-950 | 40 | No |
| Proof strength at elevated temperatures | |||||
| Standard | Steel name (Material number) | Temperature, °C | 0,2% proof strength, MPa, ≥ | 1% proof strength, MPa, ≥ | Heat treatment condition |
| EN 10088-2; EN 10088-3 | X10CrNi18-8 (1.4310) | 100 | 210 | 230 | Solution annealed |
| 150 | 200 | 215 | |||
| 200 | 190 | 205 | |||
| 250 | 185 | 200 | |||
| 300 | 180 | 195 | |||
| 350 | 180 | 195 | |||
Datasheet -3: The following table lists 1.4310 stainless steel physical properties, including density, specific heat capacity, electrical resistivity, modulus of elasticity, thermal conductivity, and coefficient of thermal expansion.
Notes:
| Physical Properties | |
| Density, g/cm3 | 7,9 |
| Magnetic | No |
| Specific heat capacity, J/(Kg·K) | 500 (20 ℃) |
| Electrical resistivity, μΩ·m | 0,73 (20 ℃) |
| Modulus of elasticity (Elasticity modulus), GPa | 200 (20 ℃) |
| 194 (100 ℃) | |
| 186 (200 ℃) | |
| 179 (300 ℃) | |
| 172 (400 ℃) | |
| 165 (500 ℃) | |
| Thermal conductivity, (W/m·K) | 15,0 (20 ℃) |
| Mean coefficient of thermal expansion, (10-6/K) | 16,0 (20-100 ℃) |
| 17,0 (20-300 ℃) | |
| 18,0 (20-500 ℃) | |
The following is material 1.4310 heat treatment, such as hot forming, solution annealing.
Springs up to 300 °C temperature, knives and high-strength sheets for the automotive industry.
DIN 1.4310 stainless steel (material X10CrNi18-8) equivalent to US ASTM AISI SAE, ISO, European (German DIN, British BSI, France NF), Japanese JIS and Chinese GB standard (for reference).
| EN X10CrNi18-8 (1.4310) material equivalent | |||||||||
| European Union | US | ISO | China | Japan | |||||
| Standard | Steel Name (Material Number) | Standard | Grade (UNS) | Standard | Grade (ISO number ) | Standard | Grade | Standard | Grade |
|
EN 10088-2; EN 10088-3; EN 10088-1 |
X10CrNi18-8 (1.4310) |
AISI; ASTM A240/A240M; ASTM A276/A276M; ASTM A959 |
AISI 301 (UNS S30100) | ISO 15510 | X10CrNi18-8 (4310-301-00-I ) |
GB/T 1220; GB/T 3280 |
12Cr17Ni7; 1Cr17Ni7 (Old designation) |
JIS G4303; JIS G4304 | SUS301 |