42CrMo4

42CrMo4

Special alloy steel

(W.NR. 1.7225)

CHEMICAL COMPOSITION:  (analysis according to the EN 10083-3 standard)

C %  Si %  Mn %  P %  S %  Cr %  Mo %

FROM  0,38 - 0,60 - - 0,90 0,15

TO  0,45 0,40 0,90 0,025 0,035 1,20 0,30

* MECHANICAL FEATURES: (according to the EN 10277-5 standard)

Annealed + cold drawn

Thickness  ( +A+C )

mm  hardness  HB 

maximum values

≥5≤10 300

>10≤16 290

>16≤40 285

>40≤63 280

>63≤100 280

* Delivery condition: soft annealed.

PROPERTIES :  

Weldability:

Bad weldability due to the high crack danger.

Hardenability:

Medium-good hardenability, suitable for hot purposes till a temperature of 500°.

It can be hardened in oil.

Notes :

CORRESPONDENCE WITH OTHER STANDARDS  ( purely as an indication ) :

UNI 7845

  42CrMo4

DIN 17200

  42CrMo4

ISO 683-1

 42CrMo4

AFNOR 35-552

  42CD4

AISI-SAE

  4140

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