What is composition of En24 material?

Answer 1

EN8 also know as 080M40. An unalloyed medium carbon steel. EN8 is a medium strength steel, good tensile strength. Suitable for shafts, stressed pins, studs, keys etc. AISI 1040.
Available as normalised or rolled. EN8 is supplied as round drawn/turned, round hot rolled, hexagon, square, flats and plate.

Chemical Composition BS 970:1991/1983 Nearest Equivalent C Si Mn Ni Cr Mo S P % % % % % % % % En8 0.35/0.45 0.05/0.35 0.60/1.00 - - - 0.06Max 0.06Max 080m40

Chemical Composition BS 970:1991/1983 Nearest Equivalent C Si Mn Ni Cr Mo S P % % % % % % % % En8 0.35/0.45 0.05/0.35 0.60/1.00 - - - 0.06Max 0.06Max 080m40

Chemical Composition BS 970:1991/1983 Nearest Equivalent C Si Mn Ni Cr Mo S P % % % % % % % % En8 0.35/0.45 0.05/0.35 0.60/1.00 - - - 0.06Max 0.06Max 080m40 Chemical Composition BS 970:1991/1983 Nearest Equivalent C Si Mn Ni Cr Mo S P % % % % % % % % En8 0.35/0.45 0.05/0.35 0.60/1.00 - - - 0.06Max 0.06Max 080m40 C Si Mn Ni Cr Mo S P % % % % % % % % En8 0.35/0.45 0.05/0.35 0.60/1.00 - - - 0.06Max 0.06Max 080m40

C

Si

Mn

Ni

Cr

Mo

S

P

%

%

%

%

%

%

%

%

0.35/0.45

0.05/0.35

0.60/1.00

-

-

-

0.06Max

0.06Max

Answer 2

EN24 is a high quality, high tensile, alloy steel . Usually supplied readily machineable in 'T' condition, it combines high

tensile strength, shock resistance, good ductility and resistance to wear. EN24 is available from stock in round bar, flat bar

and plate.

TYPICAL ANALYSIS

EN24

C.

Si.

Mn

Ni.

Cr.

Mo.

0.40%

0.30%

0.60%

1.50%

1.20%

0.25%

Hardening:

Heat uniformly to 823/850°C until heated through. Quench in oil.

Tempering:

Heat uniformly and thoroughly at the selected tempering temperature, up to 660°C and hold at heat for two hours per inch of

total thickness. Tempering between 250-375°C in not recommended as this can seriously reduce the steels impact value.

Stress Relieving:

Heat slowly to 650-670°C, soak well before cooling the EN24 tool in a furnace or in air.

Mechanical Properties

Heat

Treatment

Tensile

Strength

Rm N/mm²

Yield

Stress

Re N/mm²

a% on

5.665ÖSo

Impact

Izod J

Impact

KCV J

Proof

Stress

rp0.2

Hardness

HB

Size

mm

T

850/1000

654

13

40

35

635

248/302>150≤250

T

850/1000

680

13

54

50

665

248/302>63≤250

U

925/1075

755

12

47

54

740

269/331>29≤100

V

1000/1150

850

12

47

42

835

293/352

>13≤63

W

1075/1225

940

11

40

35

925

311/375

>6≤29

X

1150/1300

1020

10

34

28

1005

345/401

>6≤29

Z

1550

1235

5

10

9

1125

444

>6≤29