EN 10277-3 standard

W.NR.: 1.0715

High machinability steel not destined to heat treatment

heat analysis according to the EN 10277-3 standard

  C % Si % Mn % P % S %
From 0,90 0,27
To 0,14 0,05 1,30 0,11 0,33

according to the EN 10277-3 standard

Thickness
mm
Rolled + peeled rolled
( +SH )
Cold drawn
( +C )
hardness HB Rm (MPa) Rp0,2  minimum Rm (MPa) A5 %
(MPa) minimum
≥5≤10 440 da 510 a 810 6
>10≤16 410 da 490 a 760 7
>16≤40 da 112 a 169 da 380 a 570 375 da 460 a 710 8
>40≤63 da 112 a 169 da 370 a 570 305 da 400 a 650 9
>63≤100 da 107 a 154 da 360 a 520 245 da 360 a 630 9

* Delivery condition: as rolled.

Machinability:
This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips.

Weldability:
Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recommended for welding.

Notes:

CORRESPONDENCE WITH OTHER STANDARDS  (purely as an indication):

UNI 4838 DIN 1651 AFNOR 35-561 ISO 683-9 EN 10087
 CF 9 SMn 28  9SMn28  S 250 11 SMn 28  11SMn30

11SMn30.pdf