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G21Mn5 | 1.1138 Material Datasheet

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Material Description

Material Number Material Name Material Number (single) Standard Scope Standard Status Country Successor VDA 231-106 classification
1.1138 (SEW 685 : 2000-03) G21Mn5 1.1138 SEW 685 : 2000-03 SEW 685 : 2000-03 replaced by SEW 685 : 2018-01 Replaced Germany G21Mn5 1.1.1 1)
1) Remark: G21Mn5, formerly GS-21Mn5, is used in refrigerating plants.

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 [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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Heat Treatment

Heat Treatment Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
20GL Russia GOST 21357 1)
20ГЛ Russia GOST 21357 1)
A781 Grade A2Q USA ASTM A781 1)
J02503 USA UNS 1)
GS-21 Mn 5 Germany
1) Source: Stahlschlüssel 2013, Verlag Stahlschlüssel Wegst GmbH, Marbach