Steel 30MnB5

30MnB5

EN 10083-3:2002, Number: 1.5531

Comparasion of steel grades

JUS

-

DIN

30MnB5

BS

-

GOST

-

AISI

-

UNI

-

NF

-

Chemical elements

C

Si

Mn

P

S

-

B

%, by mass

0,27 - 0,33

Ł 0,40

1,15-1,45

max 0.025

max 0,035

-

0,0008-0,0050

Permissible deviation

± 0.02

± 0,03

± 0,05

+ 0.005

+ 0.005

-

± 0.03

d ≤ 16mm oder t ≤ 8mm

16mm < d ≤ 40mm

8mm < t ≤ 20mm

40mm < d ≤ 100mm

20mm < t ≤ 60mm

100mm < d ≤ 160mm

60mm < t ≤ 100mm

160mm < d ≤ 250mm

100mm < t ≤ 160mm

Re _min (MPa)

800

650

-

-

-

Rm (MPa)

950-1150

800-950

-

-

-

A min. (%)

13

13

-

-

-

Z min. (%)

50

50

-

-

-

KV min. (J)

60

60

-

-

-

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

mm

1,5

3

5

7

9

11

13

15

20

25

30

35

40

45

50

+H

max.

56

55

55

54

53

51

50

47

40

37

33

-

-

-

-

min.

47

46

45

44

42

39

36

31

22

-

-

-

-

-

-

Hardening temperature in the end quench test

Quenching temperature

Quenching in

Tempering temperature

880⁰±5⁰C

860-900 ⁰C

Water

400-600 ⁰C

+S

HB max.

+A

HB max.

-

Shearable in the untreated condition

-

Condition +A is not applicable for boron steels

Hardening temperature

⁰C

Core hardness *

HRC

Approximate maximum diameter

mm

Water

Oil

800

40

38

30