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EN 10297-1 Seamless Steel Tubes

EN 10297-1 Seamless Steel Tubes

EN 10297-1 seamless steel tubes Steel grade: E235, E275, E315, E355, E470 Delivery condition: Hot finished, Normalized rolled, Normalized Size range: OD 70mm-610mm, WT 4mm-35mm, according to EN 10297-1:2003 Dimension and tolerance: according to EN10297-1 Length: commercial length Test: Cast...

Description

EN 10297-1 seamless steel tubes


Steel grade: E235, E275, E315, E355, E470

Delivery condition: Hot finished, Normalized rolled, Normalized

Size range: OD 70mm-610mm, WT 4mm-35mm, according to EN 10297-1:2003

Dimension and tolerance: according to EN10297-1

Length: commercial length

Test: Cast analysis, tensile test, electromagnetic test, visual inspection

Certification: CPR(305/2011/EU)


Chemical composition

Steel

grade

Elements content, %
C
Si
Mn
P
S
Cr
Mo
Ni
Al
Cu
N
Nb
V
E235
≤0.17
≤0.35≤1.2≤0.030≤0.035-
-
-
-
-
-
-
-
E275
≤0.21≤0.35≤1.4≤0.030≤0.035-
-
-
-
-
-
-
-
E315
≤0.21≤0.30≤1.5≤0.030≤0.035-
-
-
-
-
-
-
-
E355
≤0.22≤0.35≤1.6≤0.030≤0.035-
-
-
-
-
-
-
-
E470

0.16-

0.22

0.10-

0.50

1.30-1.70
≤0.030≤0.035-
-
-
-
≥0.010
≤0.020≤0.07

0.08-

0.15



Mechanical properties

Steel

grade

Delivery

condition

Yield strength Min (MPa)
Tensile strength Min (MPa)
Elongation A, %
Wall thickness (mm)
Wall thickness (mm)
<16
16<T≤4040<T≤65<16
16<T≤4040<T≤65

Longitudinal

direction

Transverse

direction

E235
+AR or +N
235
225
215
360
360
360
25
23
E275
+AR or +N275
265
255
410
410
410
22
20
E315
+AR or +N315
305
295
450
450
450
21
19
E355
+AR or +N355
345
335
490
490
490
20
18
E470
+AR
470
430
--
650
--
--
17
15



Dimensional tolerances

Outer diameter

D mm

Tolerance on D

Tolerance on T for T/D ratio
T/D≤0.025
0.025<T/D≤0.05T/D>0.05
D≤219.1

±1% or 0.5mm

Whichever is the

greater

±12.5% or ±0.4mm

Whichever is the greater

D>219.1
±1%±20%±15%±12.5%


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