Steel Tube Manufacturer EN10297-1 Seamless Circular Steel Tubes for mechanical use

Steel 
grade

C

Si

Mn

P

S

Cr

Mo

Ni

Other elem
ents

Steel name

Steelnum
ber

min

max

min

max

min

max

max

max

min

max

min

max

min

max

E235

1.0308

0.17

-

0.35

-

1.20

0.030

0.035

E275

1.0225

0.21

-

0.35

-

1.40

0.030

0.035

E315

1.0236

0.21

-

0.30

-

1.50

0.030

0.035

E355 b

1.0580

0.
22

-

0.55

-

1.60

0.030

0.035

E470

1.0536

0.16

0.22

0.10

0.50

1.30

1.70

0.030

0.035

Al min 0.010,
N max. 0.020,
Nb Max.0.07,V 0.08/0.15

C22E

1.1
151

0.
17

0.
24

-

0.
40

0.
40

0.
70

0.0
35

0.0
35

C35E

1.1
181

0.
32

0.
39

-

0.
40

0.
50

0.
80

0.0
35

0.0
35

C45E

1.1
191

0.
42

0.
50

-

0.
40

0.
50

0.
80

0.0
35

0.0
35

C60E

1.1
221

0.
57

0.
65

-

0.
40

0.
60

0.
90

0.0
35

0.0
35

25CrMo4

1.7218

0.22

0.29

0.40

0.60

0.90

0.035

0.035

0.90

1.20

0.15

0.30

-

-

30CrMo4

1.7216

0.27

0.34

0.35

0.35

0.60

0.035

0.035

0.80

1.15

0.15

0.30

-

-

34CrMo4

1.7220

0.30

0.37

0.40

0.
60

0.
90

0.035

0.035

0.90

1.20

0.15

0.30

-

-

42CrMo4

1.7225

0.38

0.45

0.40

0.60

0.90

0.035

0.035

0.90

1.20

0.15

0.30

-

-

Steel 
Grade

Deli
very

cond
itiion

Minimum tensile properties

Steel name

Steel num
ber

Yield 
strength(ReH)
Mpa b

Tensile 
strength(Rm)
Mpa

Elong
ation A
%

For T in mm

For T in mm

l

t

≤16

＞16

＞40

＞65

＞80

≤16

＞16

＞40

＞65

≤40

≤65

≤80

≤100

≤40

≤65

≤100

E235

1.0
308

+ARora+N

235

225

215

205

195

360

360

360

340

25

23

E275

1.0
225

+AR ora+N

275

265

255

245

235

410

410

410

380

22

20

E315

1.0
236

+ARora+N

315

305

295

280

270

450

450

450

420

21

19

E355

1.0
580

+AR ora+N

355

345

335

315

295

490

490

490

470

20

18

E470

1.0
536

+AR

470

430

-

-

-

650

600

-

-

17

15

Steel Grade

Minimum tensile properties

Steel name

Steel number

Yeld strength(ReH)
MPa

Tensile strength(Rm)
MPa

Elongation A
%

For T in mm

For T in mm

For T in mm

≤16

＞16

＞40

≤16

＞16

＞40

≤16

＞16

＞40

≤40

≤80

≤40

≤80

≤40

≤80

l

t

l

t

l

t

C22E

1.151

240

210

210

430

410

410

24

22

25

23

25

23

C35E

1.1181

300

270

270

550

520

520

18

16

19

17

19

17

C45E

1.1191

340

305

305

620

580

580

14

12

16

14

16

14

C60E

1.1221

390

350

340

710

670

670

10

8

11

9

11

9

Steel Grade

Minimum tensile properties

Steel name

Steel num
ber

Yield 
strength(ReH)
Mpa

Tensile 
strength(Rm)
Mpa

Elong ation A %

For T in mm

For T in mm

For T in mm

≤8

＞8

＞20

＞50

≤8

＞8

＞20

＞50

≤8

＞8

＞20

＞50

≤20

≤50

≤80

≤20

≤50

≤80

≤20

≤50

≤50

l

t

l

t

l

t

l

t

C22E

1.1151

340

290

270

260

500

470

440

420

20

1
8

22

2
0

2
2

2
0

2
2

2
0

C35E

1.1181

430

380

320

290

630

600

550

500

17

1
5

19

1
7

2
0

1
8

2
0

1
8

C45E

1.1191

490

430

370

340

700

650

630

600

14

1
2

1
6

1
4

1
7

1
5

1
7

1
5

C60E

1.1221

580

520

450

420

850

800

750

710

11

9

1
3

1
1

1
4

1
2

1
4

1
2

Steel Grade

Minimum tensile properties

Steel name

Steel nu
mber

Yield 
strength(ReH)
Mpa

Tensile 
strength(Rm)
Mpa

A
%

For T in mm

For T in mm

For T in mm

≤
8

＞
8

＞
20

＞
50

≤8

＞
8

＞
20

＞
50

≤8

＞8

＞
20

＞
50

≤20

≤50

≤80

≤20

≤50

≤80

≤20

≤
50

≤
80

l

t

l

t

l

t

l

t

25Cr
Mo4

1.7218

700

600

450

400

900

800

700

650

12

10

1
4

1
2

1
5

1
3

1
6

1
4

30Cr
Mo4

1.7216

750

630

520

480

950

850

750

700

12

10

13

11

14

12

15

13

34C
rMo4

1.7220

800

650

550

500

1000

900

800

750

11

9

12

10

14

12

15

13

42C
rMo4

1.7225

900

750

650

550

1100

1000

900

800

10

8

11

9

12

10

13

11