A64    
  Steels for gas containers   Last update: 2011-4-5

The strength of these gas containers remains constant, even after heat treatment of the welds, thereby guaranteeing safety.

 

Properties
   

Steels for gas containers are a specific category of steels for pressure vessels. These steels are deep drawable and non-ageing.

 

Advantages
   

Steels for gas containers have very good weldability and excellent toughness. Their strength remains constant, even after heat treatment of the welds (normalisation or stress-relief annealing). This property guarantees the safety of the gas containers.

 

Applications
   

These grades are used for the production of gas containers according to the following process: top and bottom are cold formed, welded (SAW) and normalised.

 

Brand correspondence
   
 EN 10120:2008JIS G3116:1991Old brand names
P245NBP245NBSG 255BZ 37
P265NBP265NBSG 295BZ 42
P310NBP310NBSG 325 
P355NBP355NBSG 365 


 

Dimensions
   

Pickled
Thickness (mm)Min widthP245NBP265NBP310NBP355NB
Max widthMax widthMax widthMax width
1.50 ≤ th < 1.70800-1100--
1.70 ≤ th < 1.8012501250
1.80 ≤ th < 1.9014601460
1.90 ≤ th < 2.00152015201050
2.00 ≤ th < 2.101620162014401250
2.10 ≤ th < 2.2016601660
2.20 ≤ th < 2.30172017201510
2.30 ≤ th < 2.401780178015901320
2.40 ≤ th < 2.5018401840
2.50 ≤ th < 2.60190019001400
2.60 ≤ th < 2.7020702070
2.70 ≤ th < 2.801440
2.80 ≤ th < 2.901480
2.90 ≤ th < 3.001530
3.00 ≤ th < 3.1016802040
3.10 ≤ th < 3.502070
3.50 ≤ th < 4.50213021301800
4.50 ≤ th < 5.001900
5.00 ≤ th < 6.1021302130
6.10 ≤ th < 6.3020702070
6.30 ≤ th < 6.4015701570--
6.40 ≤ th < 6.5015501550
6.50 ≤ th < 6.6015301530

Other options exist for cold rolled grades; see data sheet B64.




 

Mechanical properties
   
 
Direction
Thickness (mm)
Re (MPa)
Rm (MPa)
A80 (%)
A 5.65√So (%)
P245NBT1.5 - 3≥ 245360 - 450≥ 26-
3 - 6-≥ 34
P265NBT1.5 - 3≥ 265410 - 500≥ 24-
3 - 7-≥ 32
P310NBT1.5 - 3≥ 310460 - 550≥ 21-
3 - 7-≥ 28
P355NBT1.7 - 3≥ 355510 - 620≥ 19-
3 - 6-≥ 24

All mechanical properties are guaranteed in normalised or normalised rolled condition.



 

Chemical composition
   
 
C (%)
Mn (%)
P (%)
S (%)
Si (%)
Al (%)
Nb (%)
Ti (%)
P245NB ≤ 0.160 ≥ 0.30 ≤ 0.025 ≤ 0.015 ≤ 0.25 ≥ 0.020 ≤ 0.050 ≤ 0.030
P265NB ≤ 0.190 ≥ 0.40 ≤ 0.025 ≤ 0.015 ≤ 0.25 ≥ 0.020 ≤ 0.050 ≤ 0.030
P310NB ≤ 0.200 ≥ 0.70 ≤ 0.025 ≤ 0.015 ≤ 0.50 ≥ 0.020 ≤ 0.050 ≤ 0.030
P355NB ≤ 0.200 ≥ 0.70 ≤ 0.025 ≤ 0.015 ≤ 0.50 ≥ 0.020 ≤ 0.050 ≤ 0.030

The chemical properties given are based on cast analysis data.



   
For commercial information (quotations, deliveries, product availability):

For technical questions about these products: fce.technical.assistance@arcelormittal.com
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All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.