High-temperature steels
High-temperature steels are steels designed to retain useful strength and structural stability during exposure to elevated temperatures. Their alloying systems provide resistance to oxidation, creep and loss of mechanical properties during prolonged heating, making them suitable for furnace components, heat exchangers, boilers and other hot-service equipment.
| Grade | Material no. | C | Si | P | S | Cr | Mn |
|---|---|---|---|---|---|---|---|
| 1.4903 | 1.4903 | 0,08-0,12 | ≤0,50 | 0,025 | 0,015 | 8,00-9,50 | 0,30-0,60 |
| X2CrNiMoN17-12-2 | 1.4909 | 0,015-0,030 | ≤1,00 | 0,035 | 0,02 | 17,0-18,0 | 1,60-2,00 |
| X3CrNiMoBN17-13-3 | 1.4910 | ≤0,04 | ≤0,75 | 0,035 | 0,015 | 16,0-18,0 | ≤2,00 |
| X19CrMoNbVN11-1 | 1.4913 | 0,17-0,23 | ≤0,50 | 0,025 | 0,015 | 10,0-11,5 | ≤0,40-0,90 |
| X6CrNiMoB17-12-2 | 1.4919 | 0,04-0,08 | ≤0,75\n(≤1,00) | 0,035 | 0,015 | 16,0-18,0\n(16,5-18,5) | ≤2,00 |
| X15CrMo12-1 | 1.4920 | 0,12-0,17 | ≤1,00 | 0,045 | 0,03 | 11,0-12,0 | ≤1,00 |
| X19CrMo12-1 | 1.4921 | 0,15-0,23 | 0,10-0,50 | 0,045 | 0,03 | 11,0-12,5 | 0,30-0,80 |
| 1.4922 | 1.4922 | 0,17-0,23 | ≤0,40 | 0,025 | 0,015 | 10,0-12,5 | 0,30-1,00 |
| X22CrMoV12-1 | 1.4923 | 0,18-0,24 | ≤0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,40-0,90 |
| X21CrMoV12-1 | 1.4926 | 0,20-0,26 | ≤0,20 | 0,02 | 0,007 | 11,0-12,5 | 0,30-0,80 |
| X23CrMoWMnNiV12-1-1 | 1.4929 | 0,20-0,25 | ≤0,50 | 0,04 | 0,025 | 11,0-12,5 | 0,50-1,00 |
| X20CrMoWV12-1 | 1.4935 | 0,17-0,24 | 0,10-0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,30-0,80 |
| X12CrNiMoV12-3 | 1.4938 | 0,08-0,15 | ≤0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,40-0,90 |
| X7CrNiTi18-10 | 1.4940 | 0,04-0,08 | ≤1,00 | 0,04 | 0,015 | 17,0-19,0 | ≤2,00 |
| X6CrNiTiB18-10 | 1.4941 | 0,04-0,08 | ≤1,00 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| X6CrNiWNbN16-16 | 1.4945 | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| X6CrNi18-10 | 1.4948 | 0,04-0,08 | ≤1,00 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| X3CrNiN18-11 | 1.4949 | ≤0,04 | ≤0,75 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| S66286 | 1.4954 | ≤0,08 | ≤1,00 | 0,01 | 0,01 | 13,5-16,0 | 1,00-2,00 |
| X5NiCrAlTi31-20 | 1.4958 | 0,03-0,08 | ≤0,70 | 0,015 | 0,01 | 19,0-22,0 | ≤1,50 |
| X7NiCrAlTi33-21 | 1.4959 | 0,05-0,10 | ≤0,70 | 0,015 | 0,01 | 19,0-22,0 | ≤1,50 |
| X40CrNiCoNb13-13 | 1.4960 | 0,35-0,45 | ≤1,00 | 0,03 | 0,03 | 12,5-13,5 | ≤2,00 |
| X8CrNiNb16-13 | 1.4961 | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,0-17,0 | ≤1,50 |
| X12CrNiWTiB16-13 | 1.4962 | 0,07-0,15 | ≤0,50 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| X 10 NiCrMoTiB 15 15 | 1.4970 | 0,08-0,12 | 0,25-0,45 | 0,03 | 0,015 | 14,5-15,5 | 1,60-2,00 |
| X12CrCoNi21-20 | 1.4971 | 0,08-0,16 | ≤1,00 | 0,035 | 0,015 | 20,0-22,5 | ≤2,00 |
| X6NiCrTiMoVB25-15-2 | 1.4980 | 0,03-0,08 | ≤1,00 | 0,025 | 0,015 | 13,5-16,0 | 1,00-2,00 |
| X8CrNiMoNb16-16 | 1.4981 | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| 1.4985 | 1.4985 | ≤0,06 | ≤1,00 | 0,025 | 0,015 | 13,5-16,0 | ≤2,00 |
| X7CrNiMoBNb16-16 | 1.4986 | 0,04-0,10 | 0,30-0,60 | 0,045 | 0,03 | 15,5-17,5 | ≤1,50 |
| X8CrNiMoVNb16-13 | 1.4988 | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| NiCr22Fe18Mo | 2.4665 | 0,05-0,15 | ≤1,00 | 0,02 | 0,015 | 20,5-23,0 | ≤1,00 |
| NiCr19Fe19Nb5Mo3 | 2.4668 | 0,02-0,08 | ≤0,35 | 0,015 | 0,015 | 17,0-21,0 | ≤0,35 |
| NiCr15Fe7Ti2Al | 2.4669 | ≤0,08 | ≤0,50 | 0,02 | 0,015 | 14,0-17,0 | ≤1,00 |
| NiCr15Fe | 2.4816 | 0,05-0,10 | ≤0,50 | 0,02 | 0,015 | 14,0-17,0 | ≤1,00 |
| NiCr20Ti | 2.4951 | 0,08-0,15 | ≤1,00 | 0,02 | 0,015 | 18,0-21,0 | ≤1,00 |
| NiCr20TiAl | 2.4952 | 0,04-0,10 | ≤1,00 | 0,02 | 0,015 | 18,0-21,0 | ≤1,00 |
| NiFeCr12Mo | 2.4975 | ≤0,10 | ≤0,60 | 0,02 | 0,01 | 11,0-14,0 | ≤2,00 |
| NiCr20CoMo | 2.4982 | ≤0,10 | ≤1,00 | 0,02 | 0,01 | 18,0-21,0 | ≤1,00 |
| NiCr18Co | 2.4983 | ≤0,15 | ≤0,50 | 0,02 | 0,01 | 17,0-20,0 | ≤1,00 |
Standards covering this category
18Property ranges
9| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| ReH | N/mm² | 435 | 445 | 1 |
| Rm | N/mm² | 520 | 760 | 1 |
| HB | — | 200 | 311 | 4 |
| rho | g/cm³ | 7.7 | 8.45 | 40 |
| E | GPa | 200 | 200 | 1 |
| alpha | 10^-6/K | 15 | 15 | 1 |
| lambda | W/(m·K) | 15 | 15 | 1 |
| cp | J/(kg·K) | 500 | 500 | 1 |
| rho_el | nΩ·m | 750 | 750 | 1 |
Derived from 40 grades in this category with a recorded value.
Composition range
20| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| B | % | 0.0015 | 0.1 | 16 |
| C | % | 0.015 | 0.45 | 40 |
| N | % | 0.02 | 0.2 | 13 |
| O | % | 0.005 | 0.005 | 1 |
| Al | % | 0.02 | 3.2 | 17 |
| Si | % | 0.1 | 1 | 39 |
| P | % | 0.01 | 0.045 | 40 |
| S | % | 0.007 | 0.03 | 40 |
| Ti | % | 0.2 | 3.2 | 15 |
| V | % | 0.1 | 0.85 | 11 |
| Cr | % | 8 | 23 | 39 |
| Mn | % | 0.3 | 2 | 39 |
| Fe | % | 1.5 | 41.62 | 9 |
| Co | % | 0.25 | 21 | 14 |
| Ni | % | 0.2 | 81.685 | 38 |
| Cu | % | 0.2 | 0.5 | 11 |
| Nb | % | 0.06 | 5.5 | 7 |
| Mo | % | 0.2 | 10 | 28 |
| W | % | 0.2 | 3.5 | 7 |
| H | % | 0.005 | 0.005 | 1 |
Derived from 40 grades in this category with a recorded value.
Heat treatment
2| Operation | MinTemperature (°C) | MaxTemperature (°C) | Grades |
|---|---|---|---|
| solution_annealing | — | — | 2 |
| ageing | — | — | 1 |