• Model NO.：KM-20201019
• Outside Diameter：21mm~509mm
• Thickness：2.1~30mm
• Length：5.8m, 6m, 11.8m, 12m, or as Required.
• Standards：En 10216-2
• Materials：13crmo4-5
• Transport Package：in Bundle, or Customer′s Request
• Specification：10 mm~610mm
• Trademark：Kingmetal
• Origin：China
• HS Code：73045990
• Production Capacity：500 Tons,Month

Steel gradeHeat
treatment
aAustenizingTemperingSteel
nameSteel
numberTemperature °CCooling
MediumTemperature °CCooling
medium13CrMo4-51.7335+NT  b c900 to 960Air680 to 750air
 
 
Chemical composition of EN 10216-2 13CrMo4-5Steel gradeSteel numberCSiMnP maxSmax13CrMo4-51.73350,10 to 0,17 ≤ 0,350,40 to 0,700,0250,020
 CrMoNiAl totCu0,70 to 1,150,40 to 0,60≤ 0,30≤ 0,040≤ 0,30

Mechanical properties of EN 10216-2 13CrMo4-5Steel gradeUpper yield strength or proof strength R eH or Rp 0,2 for Wall Thickness Tmin.Tensile
Strength
RmElongation
A min.
% aSteel nameSteel
numberT ≤ 1616 < T ≤ 4040 < T ≤ 6060 < T ≤ 100ltMPa *MPa *MPa *MPa *MPa *13CrMo4-51.7335290290280-440 to 5902220
Note:l = longitudinal t = transverse
 
 
Dimensions tolerances of EN 10216-2
 
Tolerances on outside diameter and wall thicknesOutside Diameter D mmTolerances on
DTolerances on T for a T/D ratio  ≤ 0,025> 0,025
≤ 0,050> 0,050
≤ 0,10> 0,10D ≤ 219,1± 1% or ± 0.5mm  
whichever is the greater± 12,5% or ± 0.4mm whichever is the greaterD > 219,1± 20%± 15%± 12,5%± 10% aa 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 thicknessTolerances on inside diameterTolerances on T for a T/d ratiodd 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% aa 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 thicknessOutside diameter D mmTolerances on DTolerances on T min for a T min /D ratio≤ 0,02> 0,02
≤ 0,04> 0,04
≤ 0,09> 0,09D ≤ 219,1± 1% or ± 0.5mm
whichever is the greater(+ 28%,0) or (+ 0.8 mm,0) whichever is the greaterD > 219,1+ 50%
0+ 35%
0+ 28%
0+ 22% a
0a 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 thicknessTolerances
on inside diameterTolerances on T min for a
T min /d ratiodd 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
0a 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 mmLength LTolerance on exact lengthL ≤ 6000+10
06000 < L ≤ 12 000+15
0L > 12 000+ by agreement
0
 
 
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
 
 
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.
 
 
PROTECTION
The tubes will be delivered with A temporary protective coating or durable coating and/or lining
 
 
Photos of EN 10216-2 13CrMo4-5 Seamless steel tubes