Mat.No. 1.7039, DIN 41CrS4, AISI 5140

Mat.No. 1.7039, DIN 41CrS4, AISI 5140

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Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI 41CRS4 790 1.7039 41CrS4 41CrS4 5140 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.41 max. 0.40 0.75 1.05 - - - - - DescriptionSpecial structural steel. ApplicationsLow and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Hardness as surface hardened about 54 HRC. Physical properties (avarage values) at ambient temperatureModulus of el...


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Designation by Standards

Brand Name Ravne No. Mat. No. DIN EN AISI
41CRS4 790 1.7039 41CrS4 41CrS4 5140

Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.41 max. 0.40 0.75 1.05 - - - - -

Description
Special structural steel.

Applications
Low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Hardness as surface hardened about 54 HRC.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80

Soft Annealing
Heat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.

Normalizing
Temperatue: 840-880oC.

Hardening
Harden from a temperature of 820-860oC followed by oil or water quenching.

Tempering
Tempering temperature: 540-680oC.

Mechanical Properties in Quenched and Tempered Condition

Diameter (mm) 0.2 proof stress (N/mm2) Tensile stregth (N/mm2) Elongation (%) Reduction (%) Impact energy (J)
Up to 16 800 1000-1200 11 30 30
17-40 660 900-110 12 35 35
41-100 560 800-950 14 40 35

Hardenability in the end-quench test
Quenching temperature in the end-quench test is 850oC

Hardness 1.5 3 5 7 9 11 13 15 20 25 30 35 40 45 50
H max. 61 61 60 59 58 56 54 52 46 42 40 38 37 36 35
H min. 53 52 50 47 41 37 34 32 29 26 23 21 - - -
HH max. 61 61 60 59 58 56 54 52 46 42 40 38 37 36 35
HH min. 58 55 53 51 47 43 41 39 35 31 29 27 26 25 24
HL max. 58 58 57 55 52 50 47 45 40 37 34 32 31 30 29
HL min. 53 52 50 47 41 37 34 32 29 26 23 21 - - -

Forging
Hot forming temperature: 1050-850oC. 

Machinability
No data.

Forms manufactured: Please see the Dimensional Sales Program. 

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

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