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X10CrAlSi18 | 1.4742 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Predecessor VDA 231-106 classification Application temperature [°C]
1.4742 (DIN EN 10095 : 2018-12) X10CrAlSi18 1.4742 DIN EN 10095 : 2018-12 Supersedes DIN EN 10095 : 1999-05 Valid Germany X10CrAlSi18 1.1.2 550 - 1000 1)
1) Remark: The ferritic heat-resistant steel X10CrAlSi18 is resistant to the effects of hot gases and products of combustion at temperatures above 550 °C. It is non-scaling up to maximum 1000°C (highest application temperature in air). The steel is resistant to oxidizing, sulfureous gases and shows mean resistance in reducing and carburizing gases. Application for oven components, gadgetries and for single parts of mean mechanical load.

Chemical Composition

Al [%] C [%] Cr [%] Mn [%] P [%] S [%] Si [%] Remainder
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Material Compliance

REACh RoHS
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Mechanical Properties

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Tensile Strength [MPa] Yield Strength (0.2% offset) [MPa] Elongation A [%] Hardness HB | HBW
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Physical Properties

Temperature [°C] Density [g/cm³] Young's Modulus [GPa] Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] Differential Coefficient of Thermal Expansion [10^-6*K^-1] Thermal Conductivity [W/(m*K)] Thermal Diffusivity [10^-6 m²/s] Specific Electrical Resistance [µΩm] Mean Specific Heat Capacity [kJ/(kg*K)] True Specific Heat Capacity [kJ/(kg*K)] Magnetizeability
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Welding and Joining

Welding and Joining - Evaluation
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Creep Rupture Behaviour

Temperature [°C] Creep Tensile Strength at 10³ h [MPa] Creep Tensile Strength at 10^4 h [MPa] Creep Tensile Strength at 10^5 h [MPa] 1% Creep Limit at 10³ h [MPa] 1% Creep Limit at 10^4 h [MPa]
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Heat Treatment

Heat Treatment Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
X10CrAlSi18 Europe EN 10095
X10CrAlSi18 International ISO 4955 1)
SUH21 Japan JIS G 4312 1)
STR21 South Korea KS D 3732 1)
15Ch18SJu Russia GOST 5632 1)
15Х18СЮ Russia ГОСТ 5632 1)
X10CrAlSi18 Romania GOST R54908 1)
X10CrAl18 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename Supplier
BGH 4742 BGH Edelstahl Siegen GmbH 1)
H120 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf 1)
Permodur 4742 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten 1)
X10CrAlSi18 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach 1)
X10CrAl18 Hempel Special Metals GmbH, Oberhausen 1)
1.4742 NIRONIT Edelstahlhandel GmbH, Rosengarten 1)
Therma 4742 Outokumpu Deutschland GmbH, Düsseldorf 1)
1C356 SANDVIK Materials TEchnology Deutschland GmbH, Düsseldorf 1)
X10CrAlSi18 ThyssenKrupp Schulte GmbH, Essen 1)
UGI 4742 Ugitech GmbH, Renningen 1)
1.4742 ZAPP AG, Ratingen 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach