DIN 17175 Heat-resistant seamless steel boiler tube

ASTM A179 Cold drawn seamless steel tube
November 22, 2017
API 5CT K55/J55 SC steel oil casing and tubing
November 25, 2017

DIN 17175 Heat-resistant seamless steel boiler tube

DIN 17175 seamless steel pipes are used in boiler installations, high-pressure pipelines and tank construction and special machinery for both high temperature and high-pressure devices.

DIN 17175 alloy steel pipe is just a big class, and it has many classifications. We mainly produce DIN 17175 ST35.8, DIN 17175 ST45.8, and 10CrMo910 steel pipes. This alloy steel pipe is just a big class, and it has many classifications.

Grades: St 35.8, St 45.8, 15Mo3, 13CrMo44, 10CrMo910, 14MoV63

Mechanical properties of seamless steel pipes for elevated temperatures tested in room temperature
Pipe typesSteel gradesTensile strength RmYield limit for walls in mm maxElongation at break (Lo=5do) maxResilience work of the transverse DVM sample J max
Seamless steel pipes for elevated temperatures St 35.8, St 45.8, 15Mo3, 13CrMo44, 10CrMo910, 14MoV63 according to DIN 17175<\=16>16-<\=40>40-<\=60
MPaMPaMPaMPa1t
St35.8360-480235225215252334
St45.8410-530255245235211927
15Mo3450-600270270260222034
13CrMo44440-590290280280222034
10CrMo910450-600280280270201834
14MoV63460-610310320310201841

 

Steel, Chemical Composition (DIN17175):

Standard

Grade

Chemical Composition

Mechanical Properties

C

Si

Mn

P≤

S≤

Cr

Mo

(MPa)

(MPa)

(%)

DIN17175

St35.8

≤0.17

0.10~
0.35

0.40~
0.80

0.030

0.030

/

/

360~480

≥235

≥25

St45.8

≤0.21

0.10~
0.35

0.40~
1.20

0.030

0.030

/

/

410~530

≥255

≥21

15Mo3

0.12~
0.20

0.10
~0.35

0.40~
0.80

0.030

0.030

/

0.25~
0.35

460~600

≥270

≥20

 

SteelChemical Composition (EN10216-2):

Standard

Grade

Chemical Composition

Mechanical Properties

C

Si

Mn

P≤

S≤

Cr≤

Mo

(MPa)

(MPa)

L

t

EN10216-2

195GH

≤0.13

≤0.35

≤0.70

0.025

0.020

0.30

≤0.08

320~440

≥195

≥27

≥25

P235GH

≤0.16

≤0.35

≤1.20

0.025

0.020

0.30

≤0.08

360~500

≥235

≥25

≥23

P265GH

≤0.20

≤0.40

≤1.40

0.025

0.020

0.30

≤0.08

410~570

≥265

≥23

≥21

20MnNb6

≤0.22

0.15~
0.35

1.00~ 1.50

0.025

0.020

500~650

≥355

≥22

≥20

16Mo3

0.12~
0.20

≤0.35

0.40~ 0.90

0.025

0.020

0.30

0.25~
0.35

450~600

≥280

≥22

≥20

Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other. The pipes are manufactured from carbon and low-alloy steel grades which are resistant to loads under high pressure and temperatures. They are used for the construction of power engineering appliances such as: boilers, heating coils, stoves, heaters, heat exchangers.
The pipes are manufactured with the diameters between 21,3 – 660 mm and with the wall thickness of up to 100 mm in the case of hot rolling, and with the diameters between 10,2 – 108 and with the wall thickness of up to 12,5 mm in the case of cold drawing. The pipes are manufactured with TC1 tests (I requirement level) and TC2 (III requirement level) according to

PN-EN10216-2.

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