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20CrS4 | 1.7028 Material Datasheet

Material Test Series Values
Material Standard Values

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Material Description

Material Number	Material Number (single)	Standard	Scope	Standard Status	Country	Predecessor	VDA 231-106 classification
1.7028 (DIN EN ISO 683-7 : 2025-02)	1.7028	DIN EN ISO 683-7 : 2025-02	Supersedes DIN EN 10277 : 2018-09	Valid	Germany	20CrS4	1.1	1)
1) Remark: Alloy case-hardening steel for case-hardened machine parts.

Chemical Composition

C [%]	Cr [%]	Cu [%]	Mn [%]	P [%]	S [%]	Si [%]
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Mechanical Properties

Semi-finished Product	Condition	Nominal Size [mm]	Hardness HB \| HBW
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Physical Properties

Temperature [°C]	Density [g/cm³]	Young's Modulus [GPa]	Shear 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)]
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Cross Reference

Material Name	Country	Standard
20CrS4	Europe	EN ISO 683-7
20CrS4	International	ISO 683-7

Producer/Supplier/Trade names

Tradename	Supplier
20CrS4	Andernach & Bleck GmbH & Co. KG, Hagen
20CrS4	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
20CrS4	KSM Stahl GmbH, Empfingen
20CrS4	LSV Lech-Stahl Veredelung GmbH, Landsberg am Lech
20CrS4	Swiss Steel AG, Emmenbrücke
20CrS4	ThyssenKrupp Schulte GmbH, Essen