E911 (X11Cr- MoWVNb9-1-1) Usage : Alloy Steel For Modern high-output Power Plants
What is the different T/P91 (X10CrMoVNb9-1), E911 (X11Cr-MoWVNb9-1-1) and T/P92 (X10CrWMoVNb9-
2)
Comparison of the chemical compositions of steels T/P9, T/P91, E911, T/P92 and X20CrMoV11-1 according to EN10216-2
| | T/P9 Chemical Composition | T/P91 X10CrMoVNb9-1 Chemical Composition | E911 X11CrMoWVNb9-1-1 Chemical Composition | T/P92 X10CrWMoVNb9-2 Chemical Composition | X20CrMoV11-1 Chemical Composition |
| C | max. 0.15 | 0.08 - 0.12 | 0.09 - 0.13 | 0.07 - 0.13 | 0.17 - 0.23 |
| Si | 0.25 - 1.00 | 0.20 - 0.50 | 0.10 - 0.50 | max. 0.50 | 0.15 - 0.50 |
| Mn | 0.30 - 0.60 | 0.30 - 0.60 | 0.30 - 0.60 | 0.30 - 0.60 | max. 1.00 |
| P | max. 0.025 | max. 0.020 | max. 0.020 | max. 0.020 | max. 0.025 |
| S | max. 0.020 | max. 0.010 | max. 0.010 | max. 0.010 | max. 0.020 |
| Al | max. 0.040 | max. 0.040 | max. 0.040 | max. 0.040 | max. 0.040 |
| Cr | 8.00 - 10.00 | 8.00 - 9.50 | 8.00 - 9.50 | 8.50 - 9.50 | 10.0 - 12.50 |
| Ni | ---- | max. 0.040 | 0.10 - 0.40 | max. 0.040 | 0.30 - 0.80 |
| Mo | 0.9 - 1.10 | 0.85 - 1.05 | 0.90 - 1.10 | 0.30 - 0.60 | 0.80 - 1.20 |
| W | ---- | ---- | 0.90 - 1.10 | 1.50 - 2.00 | ----- |
| V | | 0.18 - 0.25 | 0.18 - 0.25 | 0.15 - 0.25 | 0.25 - 0.35 |
| Nb | | 0.06 - 0.10 | 0.06 - 0.10 | 0.04 - 0.09 | ----- |
| B | | ---- | 0.0005 - 0.0050 | 0.0010 - 0.0060 | ---- |
| N | | 0.030 - 0.070 | 0.050 - 0.090 | 0.030 - 0.070 | ---- |
| Cu | max. 0.30 | max. 0.30 | | ----- | max. 0.30 |
Comparison of the chemical compositions of steels T/P9, T/P91, E911, T/P92 and X20CrMoV11-1 according to EN10216-2
Normalizing temperature T/P9, T/P91, E911, T/P92 and X20CrMoV11-1
| Steel grade | Normalizing temperature °C | Tempering temperature °C |
| X20CrMoV11-1 | 1020 to 1070 | 730 to 780 |
| T/P91 (X10CrMoVNb9-1) | 1040 to 1080 | 750 to 780 |
| E911 (X11CrMoWVNb9-1-1) | 1040 to 1080 | 750 to 780 |
| T/P92 (X10CrWMoVNb9-2) | 1040 to 1080 | 750 to 780 |
