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G21Mn5 | 1.1138 Material Datasheet

Material Standard Values

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Material Description

Material Number	Material Name	Material Number (single)	Standard	Scope	Standard Status	Country	Predecessor	VDA 231-106 classification
1.1138 (SEW 685 : 2019-04)	G21Mn5	1.1138	SEW 685 : 2019-04	Supersedes SEW 685 : 2000-03	Valid	Germany	G21Mn5	1.1.1	1)
1) Remark: Cryogenic steel castings with specified low temperature properties. Application: e.g. industrial refrigeration

Chemical Composition

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 [%]
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Physical Properties

Temperature [°C]	Density [g/cm³]	Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1]	Thermal Conductivity [W/(m*K)]
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Toughness Data (Impact)

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

Condition	Welding and Joining - Evaluation	Preheating [°C]	Added Materials
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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Medium
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1) Source: blur
2) Source: blur
3) Remark: blur

Cross Reference

Material Name	Country	Standard
20GL	Russia	GOST 21357	1)
20ГЛ	Russia	GOST 21357	1)
A781 Grade A2Q	USA	ASTM A781	1)
A2Q	USA	ASTM A781	1)
J02503	USA	UNS	1)
GS-21 Mn 5	Germany		1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename	Supplier
G21Mn5	Albert Hoffmann GmbH, Eschweiler	1)
G21Mn5	Bischoff Stahl- und Edelstahlguss GmbH, Lüdinghausen
G 1138	Dörrenberg Edelstahl GmbH, Engelskirchen	1)
G21Mn5	Reinhard Tweer GmbH, Bielefeld
G21Mn5	SCHMOLZ + BICKENBACH GUSS GmbH, Krefeld	1)
G21Mn5	Silbitz Group GmbH, Silbitz
G21Mn5	voestalpine AG, Linz	1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach