Weldable normalized fine grained pressure vessel steels are characterised by a minimum yield strength of 275 - 460 MPa, by good weldability and high resistance to brittle cracking. Weldable normalized fine grained pressure vessel steels are used above all for manufacturing vessels for pressurised gas (LPG, butane and propane tanks), pressure vessels, steam boiler parts, pressure piping, compressors etc.The following special grades are available for extraordinary applications:
P...NL1 and P...NL2 or P...ML1 and P...ML2 for application temperatures below -20 °C;
P...NH for operating temperatures of up to 400 °C.
The user of these Weldable normalized fine grained pressure vessel steels must make sure that his calculation, design and processing methods are appropriate for the material. The welding technique used must be suitable for the intended application .
The main grade of Weldable normalized fine grained pressure vessel steels are :
Material #: 1.0486, 1.0487, 1.0488, 1.1104, 1.0562, 1.0565, 1.0566, 1.1106.
EN 10028-3: P275N,P275NH , P275NL1, P275NL2, P355N, p355nh, P355NL1, P355NL2.
DIN 17102: StE 285, WStE 285, TStE 285, EStE 285, StE 355, WSteE 355, TStE 355, EStE 355.
NFA 36-207 : A 510 AP, A 510 AP, A 510 FP 1.
UNI 7382 : Fe E 355 KG, Fe E 355-2, Fe E 355-3.
BS 1501: 224 Gr. 400, 224 Gr. 430, 223 Gr. 490, 224 Gr. 490, 225Gr. 490
UNE 36081: AE 355 KG
ASTM: A 516 Gr. 60, A 662 Gr. A, A 537 CL 1, A 662 Gr. C, A 737 Gr. B
| Material # | EN 10028-3 | DIN 17102 | NFA 36-207 | UNI 7382 | BS 1501 | UNE 36081 | ASTM |
| 1.0486 | P275N | StE 285 | 224 Gr. 400 | ||||
| 1.0487 | P275NH | WStE 285 | 224 Gr. 430 | A 516 Gr. 60 | |||
| 1.0488 | P275NL1 | TStE 285 | A 662 Gr. A | ||||
| 1.1104 | P275NL2 | EStE 285 | |||||
| 1.0562 | P355N | StE 355 | A 510 AP | Fe E 355 KG | 223 Gr. 490 | AE 355 KG | A 537 CL 1 |
| 1.0565 | P355NH | WSteE 355 | A 510 AP | Fe E 355-2 | 224 Gr. 490 | A 662 Gr. C | |
| 1.0566 | P355NL1 | TStE 355 | A 510 FP 1 | Fe E 355-3 | 224 Gr. 490 | A 737 Gr. B | |
| 1.1106 | P355NL2 | EStE 355 |
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