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C45U | 1.1730 Material Datasheet

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Material Description

Material Number Material Number (single) Standard Scope Standard Status Country Predecessor Successor VDA 231-106 classification
1.1730 (DIN EN ISO 4957 : 2001-02) 1.1730 DIN EN ISO 4957 : 2001-02 DIN EN ISO 4957 : 2001-02 replaced by DIN EN ISO 4957 : 2018-11 Replaced Germany C 45 W C45U 1.1 1)
1) Remark: C45U is a water hardening tool steel with good wear resistance and high impact hardness. It achieves in hardened condition at least 54 HRC. Application: cuts, punches, punching dies, shearing blades, leather knives, wood working tools, punching tools, baseplates for plastics and die-casting dies, low-temperature impact cavities, hand chisels, as well as for all kinds of agricultural tools.

Chemical Composition

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

Semi-finished Product Condition Temperature [°C] Hardness HB | HBW Hardness HRC
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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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Heat Treatment

Heat Treatment Step Temperature [°C] Medium
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Cross Reference

Material Name Country Standard
C45U Europe EN ISO 4957
50T8 India IS 1570 : Part 6 1)
TC1 India IS 1570 : Part 6 1)
50T8 India IS 3748 1)
C45U International ISO 4957 1)
1045 USA 1)
G10450 USA UNS 1)
C 45 W Germany 1)
1) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename Supplier
1730 COGNE Edelstahl GmbH, Neuss
BGH 1730 BGH Edelstahl Siegen GmbH
BOEHLER K 945 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
C45U Hoesch Hohenlimburg GmbH, Hagen
C45U ThyssenKrupp Steel Europe AG, Duisburg
C45U Saarstahl AG, Völklingen
C45U Buderus Edelstahl GmbH, Wetzlar
C45U Swiss Steel International GmbH, Düsseldorf
C45U Walzwerke Einsal GmbH, Nachrodt
C45U Chr. Höver & Sohn GmbH & Co KG, Lindlar
C45U Stahlwerk Unna GmbH & Co.KG, Unna
C45U ZAPP AG, Ratingen
C45U C.D. Wälzholz GmbH & Co. KG, Hagen
C45U Stahlrump GmbH & Co.KG, Iserlohn
C45U Böllinghaus Steel GmbH, Hilden
C45U Schmiedewerke Gröditz GmbH, Gröditz
C45U H. Kleineberg GmbH, Stelle
C45U ROPA STAHLVERTRIEB GMBH, Bad Bergzabern
C45U HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
C45U INOX SERVICE CENTER GmbH, Krefeld
C45U INTERSTAHL Service GmbH, Wetter
C45U Tata Steel, IJmuiden
C45U Sidenor Deutschland, Düsseldorf
C45U ASCOMETAL GmbH, Erkrath
C45U Klöckner & Co SE, Duisburg
C45U Hammerwerk Erft, G. Diederichs GmbH & Co. KG, Bad Münstereifel-Arloff
C45U Eisen-Heinzl GmbH, Selb-Erkersreuth
C45U SIJ MWT GmbH, Landsberg am Lech
CHRONIMO 1.1730 Chronimo Edelstahl GmbH, Barsbüttel
Dux 1730 Swiss Steel International GmbH, Düsseldorf
ES ULW 65 EschmannStahl GmbH, Reichshof-Wehnrath
Extra 50 Remystahl GmbH & Co. KG, Hagen
Extra Nr. 45 Dörrenberg Edelstahl GmbH, Engelskirchen
FSM 30 Friedrich Schulte Edelstahl, Essen
FW 45 Sona BLW Präzisionsschmiede GmbH, Remscheid
K945 voestalpine BÖHLER Edelstahl GmbH & Co.KG, Kapfenberg
Kind Prima weich Kind & Co., Edelstahlwerk, Wiehl
Klöckner C45U Klöckner & Co SE, Duisburg
KRUPP 1730 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
LO-K 1730 Friedr. Lohmann GmbH, Witten
Märker W 345 Schmidt + Clemens GmbH + Co. KG, Edelstahlwerk Kaiserau, Lindlar
PGS 4 Platestahl Umformtechnik GmbH, Lüdenscheid
Prima 45 Hagenkötter GmbH & Co., Solingen
Prima weich Willy Haecker GmbH, Hückeswagen
SH 6 Gustav Grimm Edelstahlwerk GmbH & Co. KG, Remscheid
SHG 1730 Swiss Steel International GmbH, Düsseldorf
SSF w Aubert&Duval Special Steel GmbH, Mönchengladbach
T 4 NATUR EHG - Edelstahl-Handelsgesellschaft mbH , Waiblingen
THYRODUR 1730 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
UHB 11 voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
UHB-11 ArcelorMittal Stahlhandel GmbH, Niederlassung Ravené, Berlin
UWS 65 W.S.M. Werkzeugstahl Handelsgesellschaft mbH & Co. KG, Meinerzhagen
WO 3 Edelstahlwerk W. Ossenberg & Cie. GmbH, Altena

Material Compliance

REACh RoHS
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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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Electrical resistivity

Temperature [°C] Specific electrical resistance [µΩm]
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Coefficient thermal expansion

Related Temperature [°C] Temperature [°C] Coefficient thermal expansion [10^-6*K^-1]
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Specific heat

Temperature [°C] Specific heat [kJ/(kg*K)]
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Density

Temperature [°C] Density [g/cm³]
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Thermal conductivity

Temperature [°C] Thermal conductivity [W/(m*K)]
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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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