GX5CrNi19-10
The EN molybdenum-free austenitic stainless casting grade; in the same family as CF8 and 304.
- Rp0.2 · MPa
- ≥ 175
- Rm · MPa
- 440–640
- TEMPERATURE
- −29 … +538 °C
- COST
Chemical composition
%, single values are maximums.
Mechanical properties
| STANDARD · CONDITION | Rp0.2 MPa | Rp1.0 MPa | Rm MPa | A % | KV J |
|---|---|---|---|---|---|
| EN 10213 · +AT, t ≤ 150 mm | 175 | — | 440–640 | 30 | 60 (+20 °C) |
Room temperature, +AT (1050–1150 °C), t ≤ 150 mm.
Service temperature
EN 1092-1 group 11E0: −29 … 600 °C. For flanged valves the upper limit is taken as 538 °C (same as CF8). For lower temperatures, choose impact-tested material or 1.4408.
This is the limit of the material itself. A valve's service temperature is usually set by the seal and seat materials; product pages give it for each seal option.
Physical properties and heat treatment
- DENSITY
- 7.88 g/cm³
- HEAT TREATMENT
- Solution annealing 1050–1150 °C, rapid cooling.
Media suitability GENERAL TREND
Emsal assessment. The final choice is made from corrosion tables, taking concentration, temperature, chloride content and flow velocity into account.
Strengths and weaknesses
Strengths
- Economical stainless casting
- Suitable for cryogenic service
Weaknesses
- Low chloride resistance
- Risk of sensitization in welding
Manufacturing and use
- ECONOMY
- Low to medium.
- MANUFACTURING METHODS
- Sand casting · Investment casting
- TYPICAL VALVE PARTS
- Body · Bonnet
Source: EN 10213. Values compiled and verified by Emsal Vana; for binding values, refer to the current edition of the standard and the material certificate.