5) ASTM A29 GR 4140

 

 

Material Data Sheet  

ASTM A29 Grade 4140  Equivalent International steel grades: ISO

683/18

JIS

G4404

DIN

1.7225

BS

EN19

Material Ma terial gro up : Through hardening steel Chemical Composition  

Typical Analysis in %

C

Si

Mn

Cr

S

P

M Mo o

Min

0.38

0.15

0.75

0.80

_

_

0.15

Max

0.43

0.35

1.0

1.10

0.04

0.035

0.25

Mechanical Me chanical Properties: Tensile Tensi le Strength Stren gth

655 MPa / 95000 95000 psi

Yield Streng th (MPa) (MPa)

415 MPa / 60200 60200 psi

Elongati on (%)

25.7% 25.7% in 50 mm

Heat He at Treatment: This alloy is hardened by heating to 1550 F and quenching in oil . It is best to normalize the alloy by heating at 1675 F for a long enough time to permit through heating, followed by air cooling, prior to the hardening treatment. Hardness: 92 HB Welding: It is weldable of the conventional methods. Welding with the alloy in the heat-treated condition will affect the mechanical properties and a post weld heat treatment may be required.  

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Prepared by:

 Ab du l K ader

Desi gn Eng in eer

Reviewed by:

Rajesh G

QA-QC Manager

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DOC: INN-MDS-05 REV 0 DATED 09-04-2020 09-04-2020