DIN 1.4841 Stainless Steel-EN10095
The numerical designation 1.4841 corresponds to the steel grade X15CrNiSi25-21, a high-alloy austenitic heat-resistant stainless steel according to EN10095.
The core performance advantages of 1.4841 steel come from the combination of high chromium (24-26%), high nickel (19-22%), and relatively high silicon (1.5-3.0%) content, forming a stable austenitic structure and a dense oxide protective film, ensuring its reliable performance in high-temperature environments.Therefore, 1.4841 steel, with its excellent high-temperature oxidation resistance and high-temperature strength, has become an ideal industrial material for long-term service in high-temperature conditions of 1000-1150°C.
DIN 1.4841 Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Ni | N |
| 1.4841/X15CrNiSi25-21 | ≤0.2 | 1.5-2.5 | ≤2.0 | ≤0.045 | ≤0.015 | 24-26 | 19-22 | ≤0.11 |
DIN 1.4841 Equivalent Grade
- China: 06Cr25Ni20
- USA: AISI 310/310S
- Japan: SUS 310/310S
DIN 1.4841 Physical Properties
- Density (20°C): 7.90-7.98 g/cm³
- Melting point range: 1398-1453°C
- Specific heat capacity (0-100°C): 0.50 kJ/(kg·K)
- Thermal conductivity (100°C): 14.2-15 W/(m·K)
- Coefficient of linear expansion (20-100°C): 16.0×10⁻⁶/°C
- Resistivity (20°C): 0.78-0.80 Ω·mm²/m
- Magnetic properties: Non-magnetic
- Elastic modulus (20°C): 200 GPa
QUICK FAQS FOR 1.4841 STEEL
Is 1.4841 steel heat-resistant?
1.4841 steel is a heat-resistant stainless steel with a maximum continuous operating temperature of approximately 1150°C and an intermittent operating temperature of up to 1035°C.
At high temperatures, it forms a stable oxide layer, preventing further oxidation of the internal material. This is far superior to common stainless steels such as 304 (870°C) and 316 (870°C).
What are the high-temperature strengths of 1.4841 steel?
1.4841 steel maintains good creep strength (resistance to slow plastic deformation) even at high temperatures, making it suitable for high-temperature components subjected to loads.
- 600°C: Tensile strength approximately 400 MPa, yield strength approximately 180 MPa
- 800°C: Tensile strength approximately 280 MPa, yield strength approximately 140 MPa
- 1000°C: Tensile strength approximately 120 MPa, yield strength approximately 60 MPa
- Creep limit: Approximately 10 MPa under 1000°C/1000h conditions
Is 1.4841 steel corrosion resistant?
At room temperature, 1.4841 steel exhibits good corrosion resistance to a variety of organic acids, inorganic acids (especially nitric acid), alkalis, and salt solutions. Due to its high nickel-chromium content, its resistance to pitting and crevice corrosion is also superior to 304/316.
Is 1.4841 steel easy to cold working and hot working?
The austenitic structure gives 1.4841 steel good plasticity and toughness, making it easy to form by cold and hot working, such as hot forging, bending, stamping, stretching, etc.
Is 1.4841 steel easy to weld?
The low-carbon design gives 1.4841 steel excellent weldability. No preheating is required before welding, and stress relief annealing at 800-900°C is recommended after welding to prevent intergranular corrosion.
1.4841 Steel Heat Treatment
The heat treatment of 1.4841 steel is mainly solution treatment, which aims to obtain a uniform austenitic structure and optimize corrosion resistance and high-temperature properties.
| Process | Temperature | Cooling Method | Purpose |
| Solution treatment | 1050-1150°C | Water cooling or air cooling | Dissolves carbides, homogenizes the microstructure, and improves plasticity and toughness. |
| Stress-relieving annealing | 800-900°C | Air cooling | Reduces internal stress after welding or cold working without affecting main performance. |
Mechanical properties of 1.4841 steel – solution annealed condition
- Tensile strength: 500-700 MPa
- Yield strength: 205-310 MPa
- Elongation: 40-55%
- Reduction of area: 50-65%
- Hardness: 160-210 HBW
DIN 1.4841 VS Other Common Heat-Resistant Steels
- vs. 1.4828 (AISI 309): 309 has a lower chromium and nickel content, resulting in slightly inferior heat and corrosion resistance compared to 1.4841. It is also less expensive and suitable for slightly lower temperature applications (1050°C).
- vs. 1.4878 / 1.4958 (Incoloy 800H/HT): 800H/HT is an iron-nickel based alloy (Fe-Ni-Cr) containing more nickel and added aluminum and titanium. Its high-temperature strength and resistance to carburization are generally superior to 1.4841, making it an upgrade option for extremely harsh heat treatment environments.
- vs. 1.4404 (AISI 316L): 316L is an excellent general-purpose acid-resistant stainless steel, but its maximum continuous operating temperature is only about 870°C, far lower than 1.4841, making it unsuitable for prolonged use at extremely high temperatures.
1.4841 Steel Supply Form & Size
- Round bar: Dia 6-400mm
- Square bar: Dia 6-200mm
- Flat bar:2 x 10-20 x 200mm
- Hexagonal bar: Dia 6-150mm
Heat treatment: Solution treatment, Annealing (+A)
Surface finish:Black / Rough turned / Peeled
