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TUBES

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Seamless cold drawn tubesEN10305-1 (ex-DIN 2391)
Skived and roller burnished H8


Chemical Content

Seamless cold drawn tubes EN 10305-1
STEEL GRADE% C% Mn% Si% P% S
E355SR≤ 0,20≤ 1,55≤ 0,50≤ 0,020≤ 0,010
HC460*≤ 0,21≤ 1,70≤ 0,50≤ 0,025≤ 0,010
HC540*≤ 0,21≤ 1,70≤ 0,50≤ 0,025≤ 0,010
HC620*≤ 0,21≤ 1,70≤ 0,50≤ 0,025≤ 0,010
HC650*≤ 0,18≤ 1,70≤ 0,50≤ 0,020≤ 0,008
* in cooperation with TENARIS Dalmine


Mechanical Characteristics
Seamless cold drawn tubes EN 10305-1
 
steel grade
Yield Point
U.T.S.
Elongation
Impact test at -20°C Joules (10x10)
RP 0,2 MPa
wall thickness: ≤16 mm - > 16 mm
Rm MPa
%
transversal / longitudinal
E355SR > 520 > 490 > 600 > 15    
HC460* +N > 460 > 460 > 560-730 > 22 ≥ 27 ≥ 40
HC540* +SR > 540 > 540 640-840 ≥ 27 ≥ 40
HC620* +SR > 620 > 590 > 700 > 15

HC650* +SR > 650 > 630 690-890 > 15 ≥ 75 ≥ 110


Technical Specifications:
Standard dimensions seamless cold drawn tubes EN 10305-1
skived and roller burnished
 
Manufacturing standardEN 10305-1 (ex-DIN2391)
Straightness1,0 mm/1000 mm
Eccentricity (wall thickness tolerance)+/- 7,5% wall thickness
I.D. toleranceH8
Inside surface roughness Ra < 0,2 µm // Rt < 3 µm
Inside surface tpi> 60% a 0,17 µm of depth
Inside surface hardnessHB 190-245
Manufacturing length5-10 m


Standard Dimensions:
Caratteristiche Meccaniche H tubes tolerances ara available also for downloading
in the UTILITY section »



Out of standard dimensions available on request:
Caratteristiche Meccaniche
Application fields