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Category · 40 grades

# 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](/materials/material-no/1.4903 "1.4903") | [1.4903](/materials/material-no/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](/materials/din-en/x2crnimon17-12-2 "X2CrNiMoN17-12-2") | [1.4909](/materials/material-no/1.4909 "1.4909") | 0,015-0,030 | ≤1,00 | 0,035 | 0,02 | 17,0-18,0 | 1,60-2,00 |
| [X3CrNiMoBN17-13-3](/materials/din-en/x3crnimobn17-13-3 "X3CrNiMoBN17-13-3") | [1.4910](/materials/material-no/1.4910 "1.4910") | ≤0,04 | ≤0,75 | 0,035 | 0,015 | 16,0-18,0 | ≤2,00 |
| [X19CrMoNbVN11-1](/materials/din-en/x19crmonbvn11-1 "X19CrMoNbVN11-1") | [1.4913](/materials/material-no/1.4913 "1.4913") | 0,17-0,23 | ≤0,50 | 0,025 | 0,015 | 10,0-11,5 | ≤0,40-0,90 |
| [X6CrNiMoB17-12-2](/materials/din-en/x6crnimob17-12-2 "X6CrNiMoB17-12-2") | [1.4919](/materials/material-no/1.4919 "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](/materials/din-en/x15crmo12-1 "X15CrMo12-1") | [1.4920](/materials/material-no/1.4920 "1.4920") | 0,12-0,17 | ≤1,00 | 0,045 | 0,03 | 11,0-12,0 | ≤1,00 |
| [X19CrMo12-1](/materials/din-en/x19crmo12-1 "X19CrMo12-1") | [1.4921](/materials/material-no/1.4921 "1.4921") | 0,15-0,23 | 0,10-0,50 | 0,045 | 0,03 | 11,0-12,5 | 0,30-0,80 |
| [1.4922](/materials/material-no/1.4922 "1.4922") | [1.4922](/materials/material-no/1.4922 "1.4922") | 0,17-0,23 | ≤0,40 | 0,025 | 0,015 | 10,0-12,5 | 0,30-1,00 |
| [X22CrMoV12-1](/materials/din-en/x22crmov12-1 "X22CrMoV12-1") | [1.4923](/materials/material-no/1.4923 "1.4923") | 0,18-0,24 | ≤0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,40-0,90 |
| [X21CrMoV12-1](/materials/din-en/x21crmov12-1 "X21CrMoV12-1") | [1.4926](/materials/material-no/1.4926 "1.4926") | 0,20-0,26 | ≤0,20 | 0,02 | 0,007 | 11,0-12,5 | 0,30-0,80 |
| [X23CrMoWMnNiV12-1-1](/materials/din-en/x23crmowmnniv12-1-1 "X23CrMoWMnNiV12-1-1") | [1.4929](/materials/material-no/1.4929 "1.4929") | 0,20-0,25 | ≤0,50 | 0,04 | 0,025 | 11,0-12,5 | 0,50-1,00 |
| [X20CrMoWV12-1](/materials/din-en/x20crmowv12-1 "X20CrMoWV12-1") | [1.4935](/materials/material-no/1.4935 "1.4935") | 0,17-0,24 | 0,10-0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,30-0,80 |
| [X12CrNiMoV12-3](/materials/din-en/x12crnimov12-3 "X12CrNiMoV12-3") | [1.4938](/materials/material-no/1.4938 "1.4938") | 0,08-0,15 | ≤0,50 | 0,025 | 0,015 | 11,0-12,5 | 0,40-0,90 |
| [X7CrNiTi18-10](/materials/din-en/x7crniti18-10 "X7CrNiTi18-10") | [1.4940](/materials/material-no/1.4940 "1.4940") | 0,04-0,08 | ≤1,00 | 0,04 | 0,015 | 17,0-19,0 | ≤2,00 |
| [X6CrNiTiB18-10](/materials/din-en/x6crnitib18-10 "X6CrNiTiB18-10") | [1.4941](/materials/material-no/1.4941 "1.4941") | 0,04-0,08 | ≤1,00 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| [X6CrNiWNbN16-16](/materials/din-en/x6crniwnbn16-16 "X6CrNiWNbN16-16") | [1.4945](/materials/material-no/1.4945 "1.4945") | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| [X6CrNi18-10](/materials/din-en/x6crni18-10 "X6CrNi18-10") | [1.4948](/materials/material-no/1.4948 "1.4948") | 0,04-0,08 | ≤1,00 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| [X3CrNiN18-11](/materials/din-en/x3crnin18-11 "X3CrNiN18-11") | [1.4949](/materials/material-no/1.4949 "1.4949") | ≤0,04 | ≤0,75 | 0,035 | 0,015 | 17,0-19,0 | ≤2,00 |
| [S66286](/materials/uns/s66286 "S66286") | [1.4954](/materials/material-no/1.4954 "1.4954") | ≤0,08 | ≤1,00 | 0,01 | 0,01 | 13,5-16,0 | 1,00-2,00 |
| [X5NiCrAlTi31-20](/materials/din-en/x5nicralti31-20 "X5NiCrAlTi31-20") | [1.4958](/materials/material-no/1.4958 "1.4958") | 0,03-0,08 | ≤0,70 | 0,015 | 0,01 | 19,0-22,0 | ≤1,50 |
| [X7NiCrAlTi33-21](/materials/din-en/x7nicralti33-21 "X7NiCrAlTi33-21") | [1.4959](/materials/material-no/1.4959 "1.4959") | 0,05-0,10 | ≤0,70 | 0,015 | 0,01 | 19,0-22,0 | ≤1,50 |
| [X40CrNiCoNb13-13](/materials/din-en/x40crniconb13-13 "X40CrNiCoNb13-13") | [1.4960](/materials/material-no/1.4960 "1.4960") | 0,35-0,45 | ≤1,00 | 0,03 | 0,03 | 12,5-13,5 | ≤2,00 |
| [X8CrNiNb16-13](/materials/din-en/x8crninb16-13 "X8CrNiNb16-13") | [1.4961](/materials/material-no/1.4961 "1.4961") | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,0-17,0 | ≤1,50 |
| [X12CrNiWTiB16-13](/materials/din-en/x12crniwtib16-13 "X12CrNiWTiB16-13") | [1.4962](/materials/material-no/1.4962 "1.4962") | 0,07-0,15 | ≤0,50 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| [X 10 NiCrMoTiB 15 15](/materials/din-en/x-10-nicrmotib-15-15 "X 10 NiCrMoTiB 15 15") | [1.4970](/materials/material-no/1.4970 "1.4970") | 0,08-0,12 | 0,25-0,45 | 0,03 | 0,015 | 14,5-15,5 | 1,60-2,00 |
| [X12CrCoNi21-20](/materials/din-en/x12crconi21-20 "X12CrCoNi21-20") | [1.4971](/materials/material-no/1.4971 "1.4971") | 0,08-0,16 | ≤1,00 | 0,035 | 0,015 | 20,0-22,5 | ≤2,00 |
| [X6NiCrTiMoVB25-15-2](/materials/din-en/x6nicrtimovb25-15-2 "X6NiCrTiMoVB25-15-2") | [1.4980](/materials/material-no/1.4980 "1.4980") | 0,03-0,08 | ≤1,00 | 0,025 | 0,015 | 13,5-16,0 | 1,00-2,00 |
| [X8CrNiMoNb16-16](/materials/din-en/x8crnimonb16-16 "X8CrNiMoNb16-16") | [1.4981](/materials/material-no/1.4981 "1.4981") | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| 1.4985 | [1.4985](/materials/material-no/1.4985 "1.4985") | ≤0,06 | ≤1,00 | 0,025 | 0,015 | 13,5-16,0 | ≤2,00 |
| [X7CrNiMoBNb16-16](/materials/din-en/x7crnimobnb16-16 "X7CrNiMoBNb16-16") | [1.4986](/materials/material-no/1.4986 "1.4986") | 0,04-0,10 | 0,30-0,60 | 0,045 | 0,03 | 15,5-17,5 | ≤1,50 |
| [X8CrNiMoVNb16-13](/materials/din-en/x8crnimovnb16-13 "X8CrNiMoVNb16-13") | [1.4988](/materials/material-no/1.4988 "1.4988") | 0,04-0,10 | 0,30-0,60 | 0,035 | 0,015 | 15,5-17,5 | ≤1,50 |
| [NiCr22Fe18Mo](/materials/din-en/nicr22fe18mo "NiCr22Fe18Mo") | [2.4665](/materials/material-no/2.4665 "2.4665") | 0,05-0,15 | ≤1,00 | 0,02 | 0,015 | 20,5-23,0 | ≤1,00 |
| [NiCr19Fe19Nb5Mo3](/materials/din-en/nicr19fe19nb5mo3 "NiCr19Fe19Nb5Mo3") | [2.4668](/materials/material-no/2.4668 "2.4668") | 0,02-0,08 | ≤0,35 | 0,015 | 0,015 | 17,0-21,0 | ≤0,35 |
| [NiCr15Fe7Ti2Al](/materials/din-en/nicr15fe7ti2al "NiCr15Fe7Ti2Al") | [2.4669](/materials/material-no/2.4669 "2.4669") | ≤0,08 | ≤0,50 | 0,02 | 0,015 | 14,0-17,0 | ≤1,00 |
| [NiCr15Fe](/materials/din-en/nicr15fe "NiCr15Fe") | [2.4816](/materials/material-no/2.4816 "2.4816") | 0,05-0,10 | ≤0,50 | 0,02 | 0,015 | 14,0-17,0 | ≤1,00 |
| [NiCr20Ti](/materials/din-en/nicr20ti "NiCr20Ti") | [2.4951](/materials/material-no/2.4951 "2.4951") | 0,08-0,15 | ≤1,00 | 0,02 | 0,015 | 18,0-21,0 | ≤1,00 |
| [NiCr20TiAl](/materials/din-en/nicr20tial "NiCr20TiAl") | [2.4952](/materials/material-no/2.4952 "2.4952") | 0,04-0,10 | ≤1,00 | 0,02 | 0,015 | 18,0-21,0 | ≤1,00 |
| [NiFeCr12Mo](/materials/din-en/nifecr12mo "NiFeCr12Mo") | [2.4975](/materials/material-no/2.4975 "2.4975") | ≤0,10 | ≤0,60 | 0,02 | 0,01 | 11,0-14,0 | ≤2,00 |
| [NiCr20CoMo](/materials/din-en/nicr20como "NiCr20CoMo") | [2.4982](/materials/material-no/2.4982 "2.4982") | ≤0,10 | ≤1,00 | 0,02 | 0,01 | 18,0-21,0 | ≤1,00 |
| [NiCr18Co](/materials/din-en/nicr18co "NiCr18Co") | [2.4983](/materials/material-no/2.4983 "2.4983") | ≤0,15 | ≤0,50 | 0,02 | 0,01 | 17,0-20,0 | ≤1,00 |

## Standards covering this category

 18

- [**DIN / EN***38 grades*](/materials/din-en "DIN / EN — 38 grades in this category")
- [**UNS***22 grades*](/materials/uns "UNS — 22 grades in this category")
- [**AFNOR***18 grades*](/materials/afnor "AFNOR — 18 grades in this category")
- [**AISI / SAE***17 grades*](/materials/aisi-sae "AISI / SAE — 17 grades in this category")
- [**ASTM***14 grades*](/materials/astm "ASTM — 14 grades in this category")
- [**BS***13 grades*](/materials/bs "BS — 13 grades in this category")
- [**ISO***11 grades*](/materials/iso "ISO — 11 grades in this category")
- [**SAE AMS***11 grades*](/materials/ams "SAE AMS — 11 grades in this category")
- [**GOST***10 grades*](/materials/gost "GOST — 10 grades in this category")
- [**JIS***9 grades*](/materials/jis "JIS — 9 grades in this category")
- [**GB***7 grades*](/materials/gb "GB — 7 grades in this category")
- [**PN***4 grades*](/materials/pn "PN — 4 grades in this category")
- [**SS***3 grades*](/materials/ss "SS — 3 grades in this category")
- [**ČSN***3 grades*](/materials/csn "ČSN — 3 grades in this category")
- [**STN***2 grades*](/materials/stn "STN — 2 grades in this category")
- [**UNI***1 grade*](/materials/uni "UNI — 1 grade in this category")
- [**STAS***1 grade*](/materials/stas "STAS — 1 grade in this category")
- [**KS***1 grade*](/materials/ks "KS — 1 grade in this category")

## Property 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 | Min Temperature (°C) | Max Temperature (°C) | Grades |
|---|---|---|---|
| solution\_annealing | — | — | 2 |
| ageing | — | — | 1 |

## Related guides

 3

- [**Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance**](/wiki/reading-a-datasheet/steel-creep-stress-rupture-and-long-term-high-temperature-performance "Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance")
- [**High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties**](/wiki/steel-families/high-strength-low-alloy-steels "High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties")
- [**Steel Thermal Expansion and Temperature-Dependent Properties**](/wiki/calculated-values/steel-thermal-expansion-and-temperature-dependent-properties "Steel Thermal Expansion and Temperature-Dependent Properties")