DIN 17175 10CrMo910 Seamless Steel Tubes

Short Description:

DIN 17175 10CrMo910 Seamless Steel Tubes may be produced by hot rolling, cold rolling, hot pressing, hot drawing or cold drawing.have a good mechanical properties at a higher temperature, up to 6 00 °C.

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DIN 17175 10CrMo910 Seamless Steel Tubes
 
Standard:DIN 17175
Seamless Steel Tubes For Elevated Temperatures
 
As far as DIN 17175 is concerned, steels that have a good mechanical properties at a higher temperature, up to 6 00 °C, and even under long-term load, are called heat-strength steels.
 

DIN 17175 10CrMo910 belongs to 2.25Cr-1Mo pearlitic heat-resistant steel, which has good physical and chemical properties and process properties, low heat treatment sensitivity, high heat strength and metallographic structure stability in long-term use at high temperature.



Equivalent Steel Grade
Grade Standard Country
STBA24 JIS G3462 Japan
P22 ASTM A335 USA
12Cr2MoG GB/T 5310 China

 

DIN 17175 10CrMo910 Seamless Steel Tubes can be used to manufacture steam boilers, pipes, pressure vessels and instruments operating at temperatures up to 600 ° C and at high temperatures.
 
 

DIN 17175 10CrMo910 Seamless Steel Tubes Quick Details
Manufacture:Seamless process
Out Dimensions: 14mm-711mm
Wall Thickness: 2mm-60mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)
Ends: Plain End, Beveled End, Treaded
 
Additional Info
Port of Shipment: Tianjin, China
Payment Terms:T / T, LC
Delivery: 7-15 days after payment
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
 
 

Manufacturing method
DIN 17175 10CrMo910 Seamless Steel Tubes may be produced by hot rolling, cold rolling, hot pressing, hot drawing or cold drawing.
The tube steel can be smelted in a flat furnace or an electric furnace according to the oxygen blowing method, and all steels should be cast in a static manner.
 

 
Supply status
The 17175 10CrMo910 Seamless Steel Tubes Will be delivered through a suitable heat treatment. heat treatment includes:
- Normalizing
- Annealing
- Tempering; from the quenching temperature, it is not cold, but then tempered
- Adjust the mass by the isothermal transformation method.
 

 
Heat treatment temperature of DIN 17175 10CrMo910 Seamless Steel Tubes
Steel Grade Thermal processing ℃ Normalizing℃ Tempering
Grade Material number Quenching temperature ℃ Tempering temperature ℃
10CrMo910 1.7380 1100 to 850°C - 900-960 700-750
 
 
Chemical composition of DIN 17175 10CrMo910
Standard:DIN 17175 grade Chemical composition　
C Si Mn P、S Cr Mo
10CrMo910 0.08-0.15 ≤0.50 0.40-0.70 ≤0.030 2.00-2.50 0.90-1.20
 
 
Mechanical property of DIN 17175 10CrMo910
Standard grade Tensile Strength(MPa) Yield Strength(MPa) Elongation(%)
DIN 17175 10CrMo910 450-600 ≥280 ≥18
 
 

Dimensions Tolerance
Project Standard Size range Tolerance
Outer diameter DIN17175 Hot rolled steel pipe OD ≤ 100mm ± 0.75%( Min ± 0.5mm )
OD＞ 100~ 320mm ± 0.9%
Cold drawn steel pipe OD ≤ 120mm ± 0.6%( Min ± 0.25mm )
Wall thickness DIN17175 OD ≤ 130mm WT ≤ 2Sn +15%~-10%
WT ＞ 2Sn~4Sn +12.5%~-10%
WT ＞ 4Sn ± 9%
130 ＜ OD ≤ 320mm WT ≤ 0.05OD +17.5%~-12.5%
0.05OD ＜ WT ≤ 0.11OD ± 12.5%
WT ＞ 0.11OD ± 10%
 
 
Original material test
A thin sheet should be taken at the top end of each round or square bar ingot for a pickling test to determine if the top end is adequately cut. Ultrasonic testing can also be performed on the shrinkage hole as selected by the supplier.
 

 
Test:
Chemical composition verification test
hydrostatictest
Tensile test
Notched impact test
Yield strength test
Ring test
Nondestructive testing
 
 
Tube flag
All steel pipes submitted for testing and acceptance shall be marked on the left and right sides of the pipe end at 300 mm. The mark is usually a number. Thin-walled tubes can also be used in other forms.
 
 

Welding properties of DIN 17175 10CrMo910 seamless alloy steel pipe
When DIN 17175 10CrMo910 alloy steel pipe is welded, if the welding rod and welding wire with the same strength as the base metal are selected, the plasticity of the welding joint obtained is poor, the preheating temperature is required to be 400-450 ℃, the preheating temperature is high, and the construction conditions are poor; in order to improve the plasticity of the welded joint, it is necessary to conduct 740 ℃ heat preservation for 3h high temperature tempering after welding. However, high temperature preheating and high temperature tempering for a long time will cause obvious softening of the HAZ.
 
If the electrode and welding wire with slightly lower strength and better plasticity are selected, the preheating temperature will be greatly reduced (actual operation 250-300 ℃), the high temperature tempering temperature will also be reduced, the tempering treatment time will be shortened, and 700-720 ℃ will be kept for 1H for tempering, which is enough to eliminate the welding stress and will not cause the softening of the heat affected zone of welding. Therefore, r317 electrode and h08crmoa welding wire are generally used for DIN 17175 10CrMo910 alloy steel pipe welding.
 


 
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