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18CrMo4 | 1.7243 Material Datasheet

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Material Description

Material Number Material Number (single) Standard Scope Standard Status Country Predecessor Successor VDA 231-106 classification
1.7243 (DIN EN ISO 683-3 : 2018-09) 1.7243 DIN EN ISO 683-3 : 2018-09 DIN EN ISO 683-3 : 2018-09 replaced by DIN EN ISO 683-3 : 2019-04 Replaced Germany 18CrMo4 18CrMo4 1.1 1)
1) Remark: The case-hardening steel is mainly used for gear parts, but also in the mechanical engineering.

Chemical Composition

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

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Tensile Strength [MPa] Hardness HB | HBW
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Heat Treatment

Heat Treatment Step Temperature [°C] Holding Time [h]
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Cross Reference

Material Name Country Standard
20CrMoH China GB/T 5216 1)
A30205 China GB/T 5216 1)
1.7243 Europe EN 10084 1)
18CrMo4 Europe EN 10084 1)
18CrMo4 Europe EN ISO 683-3
21Cr4Mo2 India IS 4432 2)
18CrMo4 International ISO 683-3
SCM418 Japan JIS G 4052 1)
SCM418H Japan JIS G 4052 1)
20ChM Russia GOST 4543 2)
20ХM Russia ГОСТ 4543 2)
SCM418H South Korea KS D 3754 2)
1) Source: EN ISO 683-3 : 2018-06
2) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename Supplier
1.7243 INOX SERVICE CENTER GmbH, Krefeld
18 CD 4 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
18CrMo4 Georgsmarienhütte GmbH, Georgsmarienhütte
18CrMo4 voestalpine AG, Linz
18CrMo4 HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
18CrMo4 Tata Steel, IJmuiden
F 66 SS AUBERT & DUVAL Deutschland GmbH, München

Material Compliance

REACh RoHS
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FKM Guideline Fatigue Strength

Semi-finished Product Condition Nominal Size [mm] Tensile Strength [MPa] Yield Strength [MPa] Fatigue Limit under rev. Tension-Compression Stresses [MPa] Fatigue Strength under pulsating Tensile Stresses [MPa] Bending Fatigue Strength [MPa] Shear Fatigue Strength [MPa] Torsion Fatigue Strength [MPa] Constant a for size factor Kd for yield stress Rp Constant a for size factor Kd for tensile strength Rm
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Hardenability (Jominy test)

Condition Front Distance [mm] Hardness HRC (+H grade) Hardness HRC (+HH grade) Hardness HRC (+HL grade)
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Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Alternating stress

Temperature [°C] Stress ratio Mean stress [MPa] Alternating stress [MPa] Cycles
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Designation

Designation Material number Source
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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