Standard

Grade

Tensile

Yield

Elongation

DIN17175

ST35.8

360-480

≥235

≥25

ST45.8

410-530

≥255

≥21

15Mo3

450-600

≥270

≥20

13CrMo44

440-590

≥290

≥20

10CrMo910

450-600

≥280

≥18

Standard

Grade

 Chemical Composition

C

Si

Mn

P

S

Cr

Mo

DIN17175

ST35.8

≤0.17

0.10-0.35

0.40-0.80

≤0.030

≤0.030

/

/

ST45.8

≤0.21

0.10-0.35

0.40-1.20

≤0.030

≤0.030

/

/

15Mo3

0.12-0.20

0.10-0.35

0.40-0.80

≤0.030

≤0.030

/

0.25-0.35

13CrMo44

0.10-0.18

0.10-0.35

0.40-0.70

≤0.030

≤0.030

0.70-1.10

0.45-0.65

10CrMo910

0.08-0.15

≤0.50

0.40-0.70

≤0.030

≤0.030

2.00-2.50

0.90-1.20

Steel grade

Tensile

strength

N/mm2

Yield point

for wall thickness in mm

≤16        >16≤40  >40≤60

N/mm2

minimum

Elogation at fracture

(Lo=5·do)

long.     transv.

%

minimum

Code number

Material number

St 35.8

1.0305

360-480

235

225

215

25

23

St 45.8

1.0405

410-530

255

245

235

21

19

19Mn5

1.0482

510-610

310

310

300

19

17

15Mo3

1.5415

450-600

270

270

260

22

20

13CrMo44

1.7335

440-590

290

290

280

22

20