Our
product range
Quality 1.4550
General Product Description
Material number 1.4550
Short name according to EN Z6CNNb18.10
AISI / UNS / Alloy AISI 347, UNS S34700
Applicable standards EN 10088-3, AD 2000 W 2, ASTM A 479, ASTM A182, EN 10272
Treatment solution annealed
Variations
| Quality | Treatment | Shape | Dimension (mm) |
|---|---|---|---|
| 1.4550 | solution annealed |  Round | 8 - 265 |
Description
The material 1.4550 is a stainless austenitic chromium-nickel steel, niobium stabilized. Resistant to intergranular corrosion up to 400 °C. Applications: plant engineering, apparatus engineering, power generation, mechanical engineering, power plant engineering, nuclear and apparatus engineering as well as components in the food industry.
Chemical composition (in %)
| C | Cr | Ni | Nb | Mn | Si | P | S | |
|---|---|---|---|---|---|---|---|---|
| Min | - | 17,0 | 9,0 | - | - | - | - | - |
| Max | ≤ 0,08 | 19,0 | 12,0 | ≤ 1,0 | ≤ 2,0 | ≤ 1,0 | ≤ 0,045 | ≤ 0,015 |
| Element | Min | Max |
|---|---|---|
| C | - | ≤ 0,08 |
| Cr | 17,0 | 19,0 |
| Ni | 9,0 | 12,0 |
| Nb | - | ≤ 1,0 |
| Mn | - | ≤ 2,0 |
| Si | - | ≤ 1,0 |
| P | - | ≤ 0,045 |
| S | - | ≤ 0,015 |
Mechanical properties (solution-annealed)
Tensile strength Rm 510–740 N/mm2
0.2% proof stress Rp0.2 ≥ 205 N/mm2
Elongation at break A5 ≥ 40 Längs (bis DIA 160) ≥ 30 Quer (über DIA 160) %
Notched impact energy (ISO-V) – J
Hardness ≤ 230 HB
Magnetizability No
Typical areas of application
plant engineering
Power Generation and Power Plant Engineering
Mechanical engineering
equipment manufacturing
chemical industry
Food Industry
Nuclear Engineering
Heat Exchangers and Piping Systems
pressure vessel construction
General properties (solution-annealed)
Corrosion Resistance
Weldability
Forgeability
Tensionability
Note
All information in this data sheet has been compiled to the best of our knowledge and belief. It is for information purposes only and does not constitute a assured property or guarantee. For the suitability of the material in specific applications, we recommend carrying out appropriate inspections and tests. Any liability for damage or errors is excluded.