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EN 10120 :
1996 |
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Steel sheet and strip for welded gas cylinders |
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1 Scope |
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1.1 This European Standard specifies
requirements for hot-rolled sheet and strip up to 5 mm.
thickness made of steels listed in
Table 1 and intended for
manufacturing welded gas cylinders. |
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1.2 The general technical delivery conditions
in EN 10021 also apply to products supplied in accordance with
this European Standard. |
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1.3 This European Standard does not apply to
sheet and strip made of: |
| - general structural
steels (see
EN 10025) |
| - non-alloy and alloy
steels for pressure vessels (see
EN 10028-1 to 10028-6) |
| - low carbon non-alloy
steels for cold forming (see
EN 10111 and EN 10130) |
| - steels with a high yield
strength for cold forming (see
EN 10149) |
| - cold-rolled strip up to
600 mm. wide of low carbon non-alloy steels (see
EN
10139) |
| - steels for simple
pressure vessels (see
EN 10207) |
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2 Requirements |
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2.1 Chemical composition |
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2.1.1 Cast analysis - The Cast analysis shall
conform to the requirements in
Table 1. |
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TABLE 1 : Chemical composition
of the cast analysis in % |
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Steel grade |
C |
Si |
Mn |
P |
S |
Al |
N |
Nb |
Ti |
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Name |
Number |
max. |
max. |
min. |
max. |
max. |
min. |
max. |
max. |
max. |
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P245NB |
1.0111 |
0,16 |
0,25 |
0,30 |
0,025 |
0,015 |
0,020 |
0,009 |
0,050 |
0,03 |
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P265NB |
1.0423 |
0,19 |
0,25 |
0,40 |
0,025 |
0,015 |
0,020 |
0,009 |
0,050 |
0,03 |
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P310NB |
1.0437 |
0,20 |
0,50 |
0,70 |
0,025 |
0,015 |
0,020 |
0,009 |
0,050 |
0,03 |
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P355NB |
1.0557 |
0,20 |
0,50 |
0,70 |
0,025 |
0,015 |
0,020 |
0,009 |
0,050 |
0,03 |
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2.2 Mechanical Properties |
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The Mechanical properties shall conform to the
values in Table 2 which are applicable to samples in the
normalized or normalizing rolled condition. |
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TABLE 2 : Mechanical properties
and guidance for heat treatment |
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Steel |
min upper yield strength |
Tensile strength |
Min elongation after fracture, A, for product thickness,
t, in mm. |
Normalizing temperature (for guidance) in oC |
| Name |
Number |
N/mm2 |
N/mm2 |
less than 3
(L=80mm)% |
from 3 to 5
(L=5,65√So)% |
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| P245NB |
1.0111 |
245 |
360 to 450 |
26 |
34 |
900 to 940 |
| P265NB |
1.0423 |
265 |
410 to 500 |
24 |
32 |
890 to 930 |
| P310NB |
1.0437 |
310 |
460 to 550 |
28 |
28 |
890 to 930 |
| P355NB |
1.0557 |
355 |
510 to 620 |
24 |
24 |
880 to 920 |
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3 NORMATIVE
REFERENCE |
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EN 10021 |
General technical delivery conditions for iron and steel
products |
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EN 10025 |
Hot-rolled products of non-alloy structural steels.
Technical delivery conditions |
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EN 10028 - 1 |
Flat products made of steels for pressure purposes -
Part 1 : General requirements |
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EN 10028 - 2 |
Flat products made of steels for pressure purposes -
Part 2 : Non-alloy and alloy steels with specified
elevated temperature properties |
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EN 10028 - 3 |
Flat products made of steels for pressure purposes -
Part 3 : Weldable fine-grain steels; normalized |
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EN 10028 - 4 |
Flat products made of steels for pressure purposes -
Part 4 : Nickel alloy steels with specified low
temperature properties |
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EN 10028 - 5 |
Flat products made of steels for pressure purposes -
Part 5 : Weldable fine-grain steels, thermo-mechanically
rolled |
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EN 10028 - 6 |
Flat products made of steels for pressure purposes -
Part 5 : Weldable fine-grain steels, quenched and
tempered |
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EN 10111 |
Continuously hot-rolled sheet and strip without coating
of unalloyed low carbon steels for cold working -
Quality specifications |
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EN 10130 |
Cold-rolled low carbon steel flat products for cold
forming - Technical delivery conditions |
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EN 10139 |
Cold-rolled uncoated low carbon narrow steel strip for
cold forming - Technical delivery conditions |
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EN 10149 - 1 |
Hot-rolled flat products made of high yield strength
steels for cold forming - Part 1 : General delivery
conditions |
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EN 10149 - 2 |
Hot-rolled flat products made of high yield strength
steels for cold forming - Part 2 : Delivery conditions
for thermo-mechanically rolled steels |
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EN 10207 |
Steels for simple pressure vessels - Technical delivery
requirements for plates, strips and bars |
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Governing Specifications |
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