1.4845 || AISI 310S/H
Heat-resistant austenitic chromium-nickel steel
The 1.4845 is among the heat-resistant austenitic chromium-nickel steels. It is well suited for an oxidizing environment at 1050 °C.
Heat-resistant Stainless Steel
General properties in processing:
- Comparable machinability to standard austenitic chromium-nickel steels
- Good weldability
- Good forgeability
Distinguishing properties:
- Scale resistant up to 1050° C, maximum application range up to 1,050°C
- Risk of embrittlement at operating temperatures 600°C<>900°C
- Good mechanical properties due to high tensile strength at higher temperatures
Corrosion resistance:
- Low: against oxidizing or reducing sulfur-containing gases
- 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
- Oil industry
- High-temperature apparatus construction
- Furnace construction
- Cement industry
Chemical values – Reference analysis (weight proportion in %)
| Value | Percentage |
|---|---|
| C | ≤ 0,10 |
| Si | ≤ 1,5 |
| 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 | ≤ 192 |
| Yield strength Rp 0.2 | ≥ 210 N/mm2 |
| Tensile strength Rm | 550 – 750 N/mm2 |
| Elongation A5 | ≥ 35 % |
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: 80 N/mm2 | 10 000 h: 40 N/mm2 | 100 000 h: 18 N/mm2 |
| Temperature: 800 °C | 1 000 h: 35 N/mm2 | 10 000 h: 18 N/mm2 | 100 000 h: 7 N/mm2 |
| Temperature: 900 °C | 1 000 h: 15 N/mm2 | 10 000 h: 8,5 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: 100 N/mm2 | 10 000 h: 90 N/mm2 |
| Temperature: 700 °C | 1 % Creep limit for 1 000 h: 45 N/mm2 | 10 000 h: 30 N/mm2 |
| Temperature: 800 °C | 1 % Creep limit for 1 000 h: 18 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: 18,5 |
| Temperature: 1 000 °C | Coefficient of thermal expansion: 19,0 |
Standards for seamless pipes
- EN 10216-5
- EN 10297-2
- SEW 470
- ASME SA312
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.
Tables and rates
Delivery Program
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