EN 10277-4 standard

W.NR.: 1.1140

Special non-alloy case-hardening steel

heat analysis according to the EN 10277-4 standard

  C % Si % Mn % P % S %
DA 0,12 0,30 0,020
A 0,18 0,40 0,60 0,035 0,040

according to the EN 10277-4 standard

Thickness
mm
Rolled + peeled rolled
( +SH )
Cold drawn
( +C )
hardness HB Rm (MPa) Rp0,2  minimum Rm (MPa) A5 %
(MPa) minimum
≥5≤10 380 da 500 a 800 7
>10≤16 340 da 480 a 780 8
>16≤40 da 98 a 178 da 330 a 600 280 da 430 a 730 9
>40≤63 da 98 a 178 da 330 a 600 240 da 380 a 670 11
>63≤100 da 98 a 178 da 330 a 600 215 da 340 a 600 12

*Delivery condition: as rolled.

Weldability:
It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions.

Improved machinability:
Upon request it can be supplied with improved machinability with Pb (lead) addition, for example
Pb=0,15%÷0,35%

Note:

CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

UNI 7846 DIN 17210 ISO 683-11 AFNOR 35-551
 C15  CK15  C15M2  XC12

C15R.pdf