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C40R steel plate

C40R steel


C40R
EN 10083-2:2002, Number: 1.1189

Comparison of steel grades

JUS

Č.14343

DIN

Ck40

BS

(080M40)

GOST

40

AISI

1040

UNI

-

NF

(XC42H1), XC38

C40R Chemical analysis-% by mass

Chemical elements

C

Si
max.

Mn

P
max.

S

Cr
max.

Mo
max.

Ni
max.

Cr+Mo+Ni
max.

%,by mass

0,37-0,44

0,40

0,50-0,80

0.025

0,020-0,040

0,40

0,10

0,40

0,63

Permissible deviation

± 0.02

+0,03

± 0,04

+ 0.005

± 0.005

+0,05

+0,03

+0,05

-

Jominy’s hardenability band

Distance in mm from quenched end Hardness in HRC (mm)

Symbol

mm→

1

2

3

4

5

6

7

8

9

10

11

13

15

20

25

30

+H

max.

60

60

59

57

53

47

39

34

31

30

29

28

27

26

25

24

min.

51

46

35

27

25

24

23

22

21

20

-

-

-

-

-

  

Tentative values for the ’’C’’ scale Rockwell hardness for special steel grades with restricted
hardenability scatter bands (+HH and +Hl grades)


Symbol

Distance in mm from the quenched end HRC hardness

1

4

5

+HH4
+HH14
+HL4
+HL14

-

38 to 57

-

54 to 60

38 to 57

-

-

27 to 46

-

51 to 57

27 to 46

-

Maximum hardness for products to be supplied in the ’’treated to improve shearability (+S)’’ or
’’soft annealed (+A)’’ condition

+S (HB max.)

+A (HB max.)

-

-

Mechanical properties in the quenched and tempered condition (+QT) )

 

Mechanical properties for the ruling sections (see prEN10083-1:2002, Annex A) with a diameter (d) or for flat products trickness (t) of

d ≤ 16mm t ≤ 8mm

16mm < d ≤ 40mm
8mm < t ≤ 20mm

40mm < d ≤ 100mm
20mm < t ≤ 60mm

Re min (MPa)

460

400

350

Rm (MPa)

650-800

630-780

600-750

A min. (%)

16

18

19

Z min. (%)

35

40

45

KV min. (J)

30

30

30

C40R Mechanical properties in the normalized condition – (+N)

 

Mechanical properties for products with a diameter (d) or, for flat products trickness (t) of

d ≤ 16mm t ≤ 16mm

16mm < d ≤ 100mm
16mm < t ≤ 100mm

100mm < d ≤ 250mm
100mm < t ≤ 250mm

Re min. (MPa)

320

290

260

Rm min. (MPa)

580

550

530

A min. (%)

16

17

17

C40R Heat treatment conditions

Quenching, 0C

Quenching agent

Tempering temperature, 0C

Hardening temperature in the end quench test,0C

Normalizing, 0C

830-870

Water or oil

550-660

8700±5

850 to 910


Bebon International is a professional C40R steel exporter and a steel Stockist in china. We keep more than 1000 tons C40R steel in stock every month. If you want to get the C40R steel price, please do not hesitate to contact us. Any need in C40R Chemical Composition and Mechanical Properties, please feel free to contact us by email or calling to us.
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