GX2CrNiMo19-11-2
The low-carbon version of 1.4408; in the same family as CF3M and 316L. Nitrogen addition is permitted.
- Rp0.2 · MPa
- ≥ 195
- Rm · MPa
- 440–640
- TEMPERATURE
- −196 … +455 °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 | 195 | — | 440–640 | 30 | 80 (+20 °C) · 60 (−196 °C) |
Room temperature, +AT (1080–1150 °C), t ≤ 150 mm.
Service temperature
EN 10213: impact requirement at −196 °C. Like CF3M and 316L, not used above 455 °C (ASME B16.34). EN 1092-1 group 13E0: 500 °C.
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
- 7.9 g/cm³
- HEAT TREATMENT
- Solution annealing 1080–1150 °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
- Resistant to intergranular corrosion after welding
- Same corrosion resistance as 1.4408
Weaknesses
- Less readily available than 1.4408
Manufacturing and use
- ECONOMY
- Medium.
- MANUFACTURING METHODS
- Sand casting · Investment casting
- TYPICAL VALVE PARTS
- Body · Bonnet · Disc
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.