1.4841 || AISI 314
Heat-resistant austenitic chromium-nickel steel
1.4841 is an advanced version of 1.4828 and belongs to the heat-resistant austenitic chromium-nickel steels that also exhibit good resistance to oxidation at high temperatures. Up to 1,100 °C, it shows excellent chemical resistance.
Heat-resistant Stainless Steel
- Moderately machinable (low cutting depths and speed)
- Good weldability
- Good forgeability
- Scale resistant up to 1,150° C, application range from 900°C – 1,120°C
- Risk of embrittlement at operating temperatures 600°C<>900°C
- Standard grade in furnace construction
- Good mechanical properties due to high tensile strength at higher temperatures
- Better scale resistance than 1.4878
Corrosion resistance:
- Low: against oxidizing or reducing sulfur-containing gases, therefore limited up to 650°C
- Moderate: at temperatures >900 °C against carburizing or oxygen-poor gases
Applications:
- Apparatus construction in the high-temperature range
- Automotive industry
- Construction industry
- Chemistry and petrochemistry
- High-temperature apparatus construction
- Furnace construction
- Recycling industry
- Cement industry
Chemical values – Reference analysis (weight proportion in %)
C | ≤ 0,20 |
Si | 1,5 – 2,5 |
Mn | ≤ 2,0 |
P | ≤ 0,045 |
S | ≤ 0,015 |
Cr | 24,0 – 26,0 |
Ni | 19,0 – 22,0 |
N | ≤ 0,11 |
Mechanical values at room temperature
Hardness HB | ≤ 223 |
Yield strength Rp 0.2 | ≥ 230 N/mm2 |
Tensile strength Rm | 550 – 750 N/mm2 |
Elongation A5 | ≥ 30 % |
Creep strength
Creep strength is the mechanical initial stress that causes a material to break after a certain period of stress duration and at a constant temperature above the transition temperature under constant tensile force.
Temperature | 1 000 h | 10 000 h | 100 000 h |
---|---|---|---|
Temperature: 600 °C | 1 000 h: 170 N/mm2 | 10 000 h: 130 N/mm2 | 100 000 h: 80 N/mm2 |
Temperature: 700 ° C | 1 000 h: 90 N/mm2 | 10 000 h: 40 N/mm2 | 100 000 h: 18 N/mm2 |
Temperature: 800 °C | 1 000 h: 40 N/mm2 | 10 000 h: 20 N/mm2 | 100 000 h: 7 N/mm2 |
Temperature: 900 °C | 1 000 h: 20 N/mm2 | 10 000 h: 10 N/mm2 | 100 000 h: 3 N/mm2 |
Creep limit
Creep limit is the initial stress that leads to a specified plastic deformation under constant tensile stress at a predetermined temperature and duration of stress.
Temperature | 1 % Creep limit for 1,000 h | 10 000 h |
---|---|---|
Temperature: 600 °C | 1 % Creep limit for 1,000 h: 105 N/mm2 | 10 000 h: 95 N/mm2 |
Temperature: 700 °C | 1 % Creep limit for 1,000 h: 50 N/mm2 | 10 000 h: 35 N/mm2 |
Temperature: 800 °C | 1 % Creep limit for 1,000 h: 23 N/mm2 | 10 000 h: 10 N/mm2 |
Temperature: 900 °C | 1 % Creep limit for 1,000 h: 10 N/mm2 | 10 000 h: 4 N/mm2 |
Coefficient of thermal expansion
Coefficient of thermal expansion for heat-resistant alloys, which have a high coefficient of thermal expansion and low thermal conductivity, leading to temperature and stress differences in a component or assembly. The coefficient of thermal expansion is expressed by the proportional length change for each degree of temperature increase, usually as 10 –6 K –1.
Temperature | Coefficient of thermal expansion |
---|---|
Temperature: 200 °C | Coefficient of thermal expansion: 15,5 |
Temperature: 400 °C | Coefficient of thermal expansion: 17,0 |
Temperature: 600 °C | Coefficient of thermal expansion: 17,5 |
Temperature: 800 °C | Coefficient of thermal expansion: 18,0 |
Temperature: 1 000 °C | Coefficient of thermal expansion: 19,0 |
Standards for seamless pipes
- EN 10216-5
- SEW 470
- ASME SA 312
The information provided on this page is non-binding. It serves only as orientation.
We cannot guarantee the results in processing and application of the products.
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Tables and rates
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Delivery Program
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