DIN 17100  Grade classification and chemical composition of the steels

Steel grade Type of Deoxidation Chemical composition in % by wt.

Ladle analysis

Additional Nitrogen combining elements(e.g.at least 0.02% A l total) Chemical Composition  in % by wt.

Sample Analysis

Steel Grade
code #  Material Number C P S N C P S N
for Product thickness in mm         for product thicknesses in mm      
New New
≤ 16 >16

≤30

 

>30

≤40

>40

≤63

 

>63

≤100

 

>100
≤ 16 >16

≤30

>30

≤40

>40

< 1

>63

≤100

 

>100
        Max. Max.        Max Max  
St. 37-2 1.0037 - optional 0.17 0.20 0.20 0.20 0.20 by agreement 0.050 0.050 0.009      - 0.21 0.25 0.25 0.25 0.25   0.065 0.065 0.010 St.37-2
Ust. 37-2 1.0036 1.0112 U 0.17 0.20 0.20 0.20 0.20 0.050 0.050 0.007     -- 0.21 0.25 0.25 0.25 0.25   0.065 0.065 0.009 USt.37-2
Rst. 37-2 1.0038 1.0114 R 0.17 0.17 0.17 0.20 0.20 0.050 0.050 0.009 -- 0.19 0.19 0.19 0.22 0.23   0.060 0.060 0.010 RSt.37-2
St. 37-3 1.0116 1.0116 RR 0.17 0.17 0.17 0.17 0.17 0.040 0.040 --- yes 0.19 0.19 0.19 0.19 0.19   0.050 0.050 St.37-3
St.44-2 1.0044  -- R 0.21 0.21 0.21 0.22 0.22 0.050 0.050 0.009 -- 0.24 0.24 0.24 0.25 0.25   0.060 0.060 0.010 St.44-2
St.44-3 1.0144  -- RR 0.20 0.20 0.20 0.20 0.20 0.040 0.040 --- yes 0.23 0.23 0.23 0.23 0.23   0.050 0.050 St.44-3
St.52-3 1.0570 1.0841 RR 0.20 0.20 0.22 0.22 0.22 0.040 0.040  -- yes 0.22 0.22 0.24 0.24 0.24   0.050 0.050 St.52-3
St.50-2 1.0050 1.0532 R -- -- -- -- -- -- 0.050 0.050 0.009 -- -- -- -- -- --   0.060 0.050 0.010 St.50-2
St.60-2 1.0060 1.0542 R -- -- -- -- -- -- 0.050 0.050 0.009 -- -- -- -- -- --   0.060 0.060 0.010 St.60-2
St.70-2 1.0070 1.0632 R -- -- -- -- -- -- 0.050 0.050 0.009 -- -- -- -- -- --   0.060 0.060 0.010 St.70-2

Mechanical and technological properties of the steels in the as-delivered condition and/or condition of treatment according to section 8.4.1.2

Steel grade according to the above table

Mechanical and technological properties 

Tensile strength Rm
For Product thickness in mm
Upper yield point ReH
for product thickness in mm
      < 1 ≥3 

≤100

>100

16

>16

≤40

>40

≤63

>63

≤80

>80

≤100

>100
Code No. Material No.

N/mm2

N/mm2
St.33 1.0035 310 up to 540 290 upto 510    - 185 175 - - - -
St.37-2

USt.37-2

1.0037

1.0036

360 upto 510 340 upto470 by agreemrnt 235 225 215 205 195 by agreement
RSt.37-2

St.37-3

1.0038

1.0116

235 225 215 215 215
St.44-2

St.44-3

1.0044

1.0144

430 upto 580 410 upto 540 275 265 255 245 235
St.52-3 1.0570 510 upto 680 490 upto 630 355 345 335 325 315
St.50-2 1.0050 490 upto 660 470 upto 610 295 285 275 265 255
St.60-2 1.0060 590 upto 770 570 up to 710 335 325 315 305 295
St 70-2 1.0070 690 upto 900 670 upto 830 365 355 345 335 325

 

Steel Grade

 

 

Code Number

Mechanical and technological properties
Elongation at rupture Bending test (180  ) Notched-bar impact work
Position of Specimen (Gauge length L=80 mm (Gauge length L= 5 d) Position of Specimen (Thickness of specimen)     for product thickness in mm ISO V-notch specimens (longitudinal )
for product specimen in mm Condition of treatment Temperature

C

For Product thickness in mm
≥0,5

< 1

≥1

< 1,5

≥1,5

< 2

≥2

<2,5

≥2,5

< 3

≥3

 40

>40

63

>63

100

>100 < 3 ≥3

 ≤63

>63

100

>100 ≥10

 ≤16

>16

≤63

>63

100

>100
 %  min Mandrel diameter J min
St 33

 

Longitudinal transverse 10

8

11

9

12

10

13

11

14

12

18

16

-- -- --

Longitudinal transverse

2.5a

3 a

3a

3.5a

-- -- U, N --- --- -- -- --

St 37-2

USt 37-2

RSt 37-2

17

15

18

16

19

17

20

18

21

19

26

24

25

23

24

22

by agreement

0,5a

1.5a

1a

2a

1,5a

2,5a

  U, N
U, N,
U, N

+20

+20

+20

27

27

27

 

---

---

---

---

----

----

 

---

----

0,5a

1a

1a

1,5a

1a

1,5a

U

N

+/- 0

-20

27

27

27

27

23

23

by agreement
St 37-3  
St 44-2 14

12

15

13

16

14

17

15

18

16

22

20

21

19

20

18

2a

2.5a

2.5a

3a

3a

3.5a

U,N + 20 27 27 --- ---
St 44-3 U, N +/- 20,

-20

27

27

27

27

23

23

by agreement
St 52-3

14

12

 

15

13

 

16,

14

 

17

15

 

18

16

 

22

20

 

21

19

 

20

18

 

2a

2.5a

 

2,5a

3a

 

3a

3,5a

 

U

N

 

+/- 0

- 20

 

27

27

 

27

27

 

23

23

 

by agreement

St 50-2 12

10

13

11

14

12

15

13

16

14

20

18

19

17

18

16

  -- --- -- --- U, N --- -- -- -- ---
St 60-2 8

6

9

7

10

8

11

9

12

10

16

14

15

13

14

12

    --- -- -- -- U, N --- -- -- -- --
St 70-2 4

3

5

4

6

5

7

6

8

7

11

10

10

9

9

8

    --- -- -- -- U, N --- -- -- -- --

 

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