EN 10277-5 standard

W.NR.: 1.1186

Non-alloy special steel

heat analysis according to the EN 10277-5 standard

  C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni %
From 0,37 0,50
To 0,44 0,40 0,80 0,030 0,035 0,40 0,40 0,10 0,63

according to the EN 10277-5 standard

Thickness
mm
Rolled + peeled rolled
( +SH )
Cold drawn
( +C )
hardness HB Rm (MPa) Rp0,2  minimum Rm (MPa) A5 %
(MPa) minimum
≥5≤10 540 da 700 a 1000 6
>10≤16 460 da 650 a 980 7
>16≤40 da 163 a 211 da 550 a 710 365 da 620 a 920 8
>40≤63 da 163 a 211 da 550 a 710 330 da 590 a 840 9
>63≤100 da 163 a 211 da 550 a 710 290 da 550 a 820 9

* Delivery condition: as rolled.

Weldability:
Due to the medium-high carbon content it can be welded with some precautions.

Hardenability:
Low hardenability; it shows intermediate features between those of steels with medium and those of steels with high carbon content; therefore it is not easy to obtain the required features by quenching in oil and the quenching in water can result in cracking.

Notes:

CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication):

UNI 7845 DIN 17200 ISO 683-1 AISI-SAE AFNOR 35-552
 C40  Ck40  C40E4 1040  XC42H1

C40E.pdf