DIN17175 standard heat-resistant seamless pipes Comparison of mechanical properties at room temperature

 

Grade

Code

Tensile Strength

N/mm2

Yield Strength①②

Elongation

Notched impact energy

Wall Thickness，mm

Portrait

Horizontal

Portrait

≤16

＞16≤40

＞40≤60

%,min

δ,min

N/mm2,min

St35.8

1.0305

350-480

235

225

215

25

23

34

St45.8

1.0405

410-530

255

245

235

21

19

27

17Mn4

1．0481

460-580

270

270

260

23

21

34

19Mn5

1.0482

510-610

310

310

300

19

17

34

15Mo3

1.5415

450-600

270④

270

260

22

20

34

13CrMo44

1.7335

440-590

290④

290

280

22

20

34

10CrMo910

1.7380

450-600

280

280

270

20

18

34

14MoV63

1.7715

460-610

320

320

310

20

18

41

X20CrMoV121

1.4922

690-540

490

490

490

17

14

34⑤

Not:

① For pipes with wall thickness ≤3mm and outer diameter ≤30mm, the minimum value can be reduced by 10N/mm2.
②If the wall thickness is > 60mm, the value of pipes made of steel grades St35.8, St45.8, 17Mn4, 19Mn5, 15Mo3 and 14MoV63 can be agreed upon;
If the wall thickness is > 60 to ≤ 80mm, the minimum value for 13CrMo44 steel pipe is 270 N/mm2 and 10CrMo910 steel is 260 N/mm2, and the minimum value for X20CrMoV121 steel pipe can be 490 N/mm2.
③ When testing longitudinal specimens, the minimum value of notch impact energy can be increased by 14J.
④The minimum value of wall thickness ≤10mm can be increased to 15N/mm2.
⑤ The minimum value for hot-rolled steel pipe can be reduced to 27J.

If you are interested in heat resistant seamless pipes under DIN17175 standard, you can feel free to contact us for the latest price.


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