EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes

Short Description:

X10CrMoVNb9-1 seamless tube is a high-temperature alloy steel, It contains high levels of alloying elements such as vanadium and niobium, significantly improving the corrosion resistance, heat resistance, and high-temperature strength of steel tube

Product Detail

Product Tags

EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes
EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes for pressure purposes (power plant boiler tubes/oil refinery boiler tubes)

EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes is a high temperature alloy steel, a type of ferritic/martensitic stainless steel. It contains high levels of alloying elements such as chromium, molybdenum, vanadium and niobium, which work together to significantly enhance the corrosion resistance, heat resistance and high temperature strength of the steel tube.


1.4903 X10CrMoVNb9-1 Steel
1.4903 X10CrMoVNb9-1 Steel can maintain stable performance under extreme working conditions. This steel is widely used in high temperature and high pressure environments such as power stations, especially in nuclear power plants, where it is widely used in the manufacture of equipment such as reactor pressure vessels, heat exchangers, steam generators, and piping systems. Its excellent heat resistance and resistance to stress corrosion cracking make 1.4903 X10CrMoVNb9-1 steel perform particularly well in these extreme environments.
 

Standard:BS EN 10216-2:2013
Seamless steel tubes for pressure purposes — Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties.
 
 
EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes Quick Details
Manufacture:Seamless process
Wall thickness(WT): 2.1mm——20 mm.
Outer diameter (OD): 21 mm——509mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded

Additional Info
Port of Shipment: Tianjin, China
Payment Terms:T / T, LC
Delivery: 25-45 days after payment
Surface: Tubes will be varnished to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
 
Manufacturing process
steel making process
1.4903 X10CrMoVNb9-1 Steels shall be fully killed.

The tubes shall be manufactured by a seamless process.
We will hot work or cold work the tube according to the actual requirements. Tubes should be cold-finished prior to heat treatment.


Heat Treatment For EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes

Steel Grade Heat
treatment
a		 Austenizing Tempering
Steel Name Steel Number Temperature °C Cooling
Medium		 Temperature °C Cooling
medium
X10CrMoVNb9-1 1.4903
+NT
c
 1040 to 1090 air 730 to 780 air
a:+N = Normalizing, +NT = Normalizing + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing.
c :For these steel grades it may be necessary in the case of wall thickness T above 25 mm or T/D > 0,1 5 to apply quenching and tempering in order to achieve the intended structure and material properties . The decision shall be left to the discretion of the manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a way shall be designated by the steel name supplemented by the symbol “+QT “.
 
 

Chemical Composition of EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes
Steel Grade Steel Number C Si  Mn
P
max
S
max
 Cr
X10CrMoVNb9-1  1.4903 
0.08-0.12
0.20-0.50
0.30-0.60
 0.020 0.010
8.00-9.50
 
Mo Ni  Al tot Cu Nb Ti V
Cr+Cu
+Mo+Ni
 Others
0.85-1.05
≤0.40
 ≤0.040
≤0.30 c
0.06-0.10
 -
0.18-0.25
 -
N=0.030-0.070
 Note:
1.Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for finishing the cast. All
appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process.
2.Option 2: In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply


 
Mechanical Properties of EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes
Steel Grade Upper yield strength or proof strength R eH or Rp 0,2 for Wall Thickness Tmin. Tensile
Strength
Rm		 Elongation
A min.
% a
Steel Name Steel Number T ≤ 16 16 < T ≤ 40 40 < T ≤ 60 60 < T ≤ 100 l t
MPa * MPa * MPa * MPa * MPa *
X10CrMoVNb9-1 1.4903 450 450 450 450 630 to 830 19  17

Steel Grade Impact properties
Minimum average absorbed energy KV 2 J
at a temperature of °C
Steel Name Steel Number l t
20 0 -10 20 0
X10CrMoVNb9-1 1.4903
40 c f
 - -
27 c
 -
Note:
l = longitudinal t = transverse
To be verified when options 4 and/or 5 are/is specified, unless footnote f) applies.
Option 4: Impact energy shall be verified .
Option 5: Longitudinal impact energy shall be verified .
Impact test mandatory for wall thickness T≥1 6 mm
 

Minimum proof strength R p0,2 at elevated temperature of EN 10216-2 1.4903 X10CrMoVNb9-1 Seamless Steel Tubes
Steel Grade  Wall thickness mm Minimum proof strength R p0,2 MPa at a temperature of °C
Steel name   100 150 200 250 300 350 400 450 500 550 600
X10CrMoVNb91  ≤100 410 395 380 370 360 350 340 320 300 270 215
 Note:1 MPa = 1 N/mm 2 .
 


Dimensions tolerances of EN 10216-2
 
Tolerances on outside diameter and wall thicknes
Outside Diameter D mm Tolerances on
D		 Tolerances on T for a T/D ratio
≤ 0,025 > 0,025
≤ 0,050		 > 0,050
≤ 0,10		 > 0,10
D ≤ 219,1 ± 1% or ± 0.5mm  
whichever is the greater		 ± 12,5% or ± 0.4mm whichever is the greater
D > 219,1 ± 20% ± 15% ± 12,5% ± 10% a
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T
 

Tolerances on inside diameter and wall thickness
Tolerances on inside diameter Tolerances on T for a T/d ratio
d d min ≤ 0,03 > 0,03
≤ 0,06		 > 0,06
≤ 0,12		 > 0,12
± 1% or ± 2 mm whichever is the greater (+ 2% ,0)or (+ 4 mm,0)
 		 whichever is the greater ± 20% ± 15% ± 12,5% ± 10% a
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T
 
 
Tolerances on outside diameter and minimum wall thickness
Outside diameter D mm Tolerances on D Tolerances on T min for a T min /D ratio
≤ 0,02 > 0,02
≤ 0,04		 > 0,04
≤ 0,09		 > 0,09
D ≤ 219,1 ± 1% or ± 0.5mm
whichever is the greater		 (+ 28%,0) or (+ 0.8 mm,0) whichever is the greater
D > 219,1 + 50%
0		 + 35%
0		 + 28%
0		 + 22% a
0
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T
 
 
Tolerances on inside diameter and minimum wall thickness
Tolerances
on inside diameter		 Tolerances on T min for a
T min /d ratio
d d min ≤ 0,05 > 0,05
≤ 0,1		 > 0,1
± 1% or ± 2 mm
whichever is the greater		 (+2%,0) or (+ 4 mm,0) whichever is the greater + 35%
0		 + 28%
0		 + 22% a
0
a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T
 
 
Tolerances on exact lengths
Dimension in mm
Length L Tolerance on exact length
L ≤ 6000 +10
0
6000 < L ≤ 12 000 +15
0
L > 12 000 + by agreement
0
 


Straightness
The deviation from straightness of any tube length L shall not exceed 0,001 5 L. Deviations from straightness over any one metre length shall not exceed 3 mm.
 
Preparation of ends
The tubes shall be delivered with bevelled ends (see Figure 1). The bevel shall have an angle α of 30°(+5°,0°) with a root face C of 1,6 mm ± 0,8 mm, except that for wall thickness T greater than 20 mm, an agreed alternative bevel may be specified.
 
 
 
TESTINGS
(1)Chemical analysis
(2)Tensile test(Tensile test at room temperature, Tensile test at elevated temperature)
(3)Flattening test
(4)Ring tensile test
(5)Drift expanding test
(6)Ring expanding test
(7)Impact test
(8)Leak tightness test(Hydrostatic test,  Electromagnetic test)
(9)Dimensional inspection
(10) Visual examination
(11) Non-destructive testing
 
Note:
a The choice of flattening or ring tensile test and of drift expanding test or ring expanding test is at the manufacturer’s
discretion.
b For steel grades X10CrMoVNb9-1 tubes, the flattening or ring tensile test and the drift expanding test or ring expanding test shall be carried out at one end of 20 % of the tubes of each test unit.
c Group A: tubes having wall thickness T ≥ 16 mm manufactured from steel grades  1.4903 X10CrMoVNb9-1,
 
In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tubes shall be supplied in accordance with the basic specification
 
 
MARKING
Marking to be applied
The marking shall be indelibly marked on each tube at least at one end. For tubes with outside diameter D ≤ 51 mm the marking on tubes may be replaced by the marking on a label attached to the bundle or box.
 
EXAMPLE 100 m - Tube - d min 240 x T min 40 - EN 10216-2 1.4903 X10CrMoVNb9-1
Marking can be customized according to customer requirements
 
 
PROTECTION
The tubes will be delivered with A temporary protective coating or durable coating and/or lining


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