DIN17175 St35.8 Seamless Tubes for Boilers 15Mo3 13CrMo44

DIN 17175 Seamless Tubes for Boilers

ST35.8, ST45.8, 15Mo3, 13CrMo44, 10CrMo910

Din17175 st35.8, st45.8, 15Mo3, 13CrMo44, 10CrMo910 is the standard applicable to seamless tubes of heat-resistant steels

DIN17175 ST45.8 Seamless Tubes

DIN 17175 boiler tubes

applies to seamless tubs including tubes for headers of heat-resistant steels according to standard which are used in the construction of boilers, pipe-lines, pressure vessels and equipment for service up to 600 °C and simultaneous high pressures, where the total stress and the relevant scaling conditions can raise or lower the temperature limit.

Manufacturing process

Tubes to this standard shall be manufactured by hot or cold rolling, hot pressing, hot or cold drawing
The steels used for tubes shall be made by the oxygen blowing process, the open hearth furnace or the electric furnace.
All steels shall be killed.

Chemical Composition

Standard	Grade	Chemical Components (%)
Standard	Grade	C	Si	Mn	P	S	Mo	Cr
DIN17175	St 35.8	≤0.17	0.10-0.35	0.40-0.80	≤0.040	≤0.040	/	/
	St 45.8	≤0.17	0.10-0.35	0.40-0.80	≤0.040	≤0.040	/	/
	15Mo3	0.12-0.20	0.10-0.35	0.40-0.80	≤0.035	≤0.035	0.25-0.35	/
	13CrMo44	0.10-0.18	0.10-0.35	0.40-0.70	≤0.035	≤0.035	0.45-0.65	0.70-1.10
	10CrMo910	0.08-0.15	≤0.50	0.40-0.70	≤0.035	≤0.035	0.90-1.20	2.0-2.50

Click to download the MTC of DIN17175 ST35.8.

Click to download the details of DIN17175 Seamless Boiler Tubes.

Delivery Conditions

The tubes shall be supplied suitably heat treated over their entire length. The following heat treatment shall be used, depending on the type of steel:

Normalizing
Subcritical annealing
Hardening and tempering with continuous cooling from the hardening temperature and subsequent tempering.
Hardening and tempering with isothermal transformation.

Mechanical Properties

Standard	Grade	Mechanical properties
Standard	Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
DIN17175	St 35.8	360-480	≥235	≥25
	St 45.8	410-530	≥255	≥21
	15Mo3	450-600	≥270	≥22
	13CrMo44	440-580	≥290	≥22
	10CrMo910	450-600	≥280	≥20

Standard: DIN 17175

Description Name: DIN 17175 seamless boiler tubes, DIN17175 ST35.8 Boiler tubes, DIN17175 ST45.8 Boiler tubes, DIN17175 15Mo3 seamless tubes, DIN17175 13CrMo44 seamless tubes, DIN17175 10CrMo910 Seamless tubes, DIN17175 Seamless tubes.

Size: 19mm-350mm

W.T.: 1.5mm-50mm

Shape: Round

Production Type: Cold drawn or Hot rolled

Length: Single random length/ Double random length or as customer’s actual request max length is 10m

Grade: ST35.8, ST45.8, 15Mo3, 13CrMo44, 10CrMo910

Testing

Tensile test
Notch impact/bending test
Ring test
Non-destructive test
Visual inspection of tube surface
Gauging
Leakage test
Grade identification test
Hot tensile test

Marking

the manufacturer’s name or trade mark;
the specified dimensions;
the number of this European Standard;
the steel name or number;
the cast number;
the delivery condition;
Others information by customer’s

Note:

Mill test certificates will be issued according to EN10204.3
The tubes Shall be Seamless cold drawn or hot rolled.

Protection and Packing:

Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.
The tubes shall be delivered with a temporary corrosion protection. The type of protection shall be at the discretion of the manufacturer

Application:

For high middle, low pressure boiler and pressure purpose

Surface treatment:

Antirust oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Photos for DIN17175 Tubes:

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