Engineering Steel Bar
Medium Carbon Steel Bar En8 BS EN 10083-2
Description:
EN8 / 080M40 is a medium carbon, medium tensile steel. This grade offers greater strength,toughness and wear resistance than mild steel.
Welding of EN8 is possible with advice from a competent welding consumables professional but welding is not recommended for through hardened, flame or induction hardened material.
Machinability is good and forming in the annealed condition is readily accomplished. Used for shafts, couplings, pins, rolls, spindles, torsion bars, gears, axles, cold headed parts etc.
Colour Code

Steel Number | Steel Name | Grade | AISI/SAE | BS 970 1983 |
---|---|---|---|---|
1.0511 | C40 | En8 | 1040 | 080M40 |
Chemical | C | Mn | Si | P | S |
---|---|---|---|---|---|
% | 0.37 - 0.44 | 0.6 - 0.9 | 0.05 - 0.35 | .06 max | .05 max |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
---|---|---|---|---|---|---|---|---|
Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds |
(mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) |
5 | 25 | 50 | 85 | 140 | 3⁄8 | 11⁄8 | 21⁄2 | 8 |
10 | 30 | 55 | 90 | 150 | 9⁄16 | 11⁄4 | 23⁄4 | |
12 | 32 | 60 | 100 | 5⁄8 | 11⁄2 | 3 | ||
16 | 35 | 65 | 110 | 3⁄4 | 13⁄4 | 31⁄2 | ||
20 | 40 | 70 | 120 | 7⁄8 | 2 | 4 | ||
22 | 45 | 80 | 130 | 1 | 21⁄4 | 5 |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
---|---|---|---|---|---|---|---|---|
Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds | Rounds |
(mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) |
45 | 75 | 105 | 135 | 165 | 200 | 260 | 350 | 450 |
50 | 80 | 110 | 140 | 170 | 210 | 270 | 370 | 480 |
55 | 85 | 115 | 145 | 175 | 220 | 280 | 380 | |
60 | 90 | 120 | 150 | 180 | 230 | 290 | 390 | |
65 | 95 | 125 | 155 | 185 | 240 | 300 | 410 | |
70 | 100 | 130 | 160 | 190 | 250 | 310 | 430 |
For further technical information or additional sizes on this product or any other product or service please contact us.
Disclaimer
All data provided is for information and guidance only. Information above is not for design purposes and comes without warranty or guarantee with respect to the subject matter or fitness for purpose.