Mat.No. 1.7038, DIN 37CrS4, AISI 5135

Mat.No. 1.7038, DIN 37CrS4, AISI 5135

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Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI 37CRS4 791 1.7038 37CrS4 - 5135 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.38 max. 0.40 0.75 1.05 - - - - - DescriptionAlloy special structural steel. ApplicationsLow and moderately stressed components for automobile industry and mechanical engineering – shafts, connecting rods, crankshafts, screws.  Physical properties (avarage values) at ambient temperatureModulus of elasticit...


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Designation by Standards

Brand Name Ravne No. Mat. No. DIN EN AISI
37CRS4 791 1.7038 37CrS4 - 5135

Chemical Composition (in weight %)

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

Description
Alloy special structural steel.

Applications
Low and moderately stressed components for automobile industry and mechanical engineering – shafts, connecting rods, crankshafts, screws. 

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. This will produce a maximum Brinell hardness of 235.

Normalizing
Temperature: 845-885oC.

Hardening
Harden from a temperature of 825-865oC 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 16 750 950-1150 11 35 30
17-40 630 850-1000 13 40 35
41-100 510 750-900 14 40 35

Diagram Tempering Temperature – Mechanical Properties

Click the image to enlarge the diagram.

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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