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20NiCrMo14-6 | 1.6742 Material Datasheet

Material Test Series Values
Material Standard Values

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Material Description

Material Number	Material Name	Material Number (single)	Standard	Scope	Standard Status	Country	VDA 231-106 classification
1.6742 (SEW 550 : 2024-12)	20NiCrMo14-6	1.6742	SEW 550 : 2024-12	Supersedes SEW 550 : 1976-08	Valid	Germany	1.1.1	1)
1) Remark: Quenched and tempered steel for larger forgings.

Chemical Composition

Al [%]	C [%]	Cr [%]	Mn [%]	Mo [%]	Ni [%]	P [%]	S [%]	Si [%]	V [%]	Remainder
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1) Source: blur

Material Compliance

REACh	RoHS
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Mechanical Properties

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Specimen Direction	Tensile Strength [MPa]	Yield Strength (0.2% offset) [MPa]	Elongation A [%]
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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)]
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1) Source: blur

Toughness Data (Impact)

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Specimen Shape	Specimen Direction	Notch Impact Energy [J]
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1) Source: blur

Cross Reference

Material Name	Country	Standard
SFVQ 3	Japan	JIS G 3204	1)
SFVQ 3	South Korea	KS D 4123	1)
A508 Grade 4N	USA	ASTM A508	2)
Grade 4N	USA	ASTM A508	2)
K42343	USA	UNS	2)
A541 Grade 4N	USA	ASTM A541	2)
Grade 4N	USA	ASTM A541	2)
K42343	USA	UNS	2)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
2) Source: SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023

Producer/Supplier/Trade names

Tradename	Supplier
20NiCrMo14-6	Buderus Edelstahl GmbH, Wetzlar	1)
1.6742.00	Edelstahlwerk W. Ossenberg & Cie. GmbH, Altena	1)
20NiCrMo14-6	Schmiedewerke Gröditz GmbH, Gröditz	1)
1) Source: Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach