EN 10277-4 standard

W.NR.: 1.5715

Special alloy case-hardening steel

heat analysis according to the EN 10277-4 standard

C % Si % Mn % P % S % Cr % Ni % Pb %
DA 0,13 0,70 0,020 0,60 0,80 0,15
A 0,19 0,40 1,00 0,025 0,040 1,00 1,10 0,35

according to the EN 10277-4 standard

Thickness
mm
Soft annealed* + peeled rolled
(+A +SH )
Soft annealed* + cold drawn
( +A+C )
Hardness maximum values  

HB

Hardness maximum values  

HB

≥5≤10 270
>10≤16 260
>16≤40 217 255
>40≤63 217 255
>63≤100 217 255

*  Delivery condition: subjected to a softening treatment according to the maximum hardness prescription.

Good machinability in the annealed condition and good aptitude / endurance  to heat treatment; this steel grade undergoes heat treatment without important deformations.

Hardenability:
It has a low-medium hardenability enabling the use, with good core resistance, till a thickness of about 50 mm.

Notes:

CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

UNI 7846 EN 10084 AISI – SAE
 16CrNi4  16NiCrS4 3115

16NiCrS4Pb.pdf