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Pressure Vessel Plate BS 1501 224 490B LT50

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BS 1501 224 specifies requirements for fully killed aluminium treated carbon manganese steel plates up to 150 mm thick in four grades which relate to minimum tensile strength. The plates may also be supplied having specified elevated temperature properties and low temperature impact properties. Plates are supplied in the normalised condition unless an alternative is agreed between supplier and purchaser.

BS 1501 224 490B LT50 - the specification
The grade BS 1501 224 490B LT50 shows that the steel will have a minimum tensile strength of 490 N/mm2 (490), has elevated temperature properties reported (B), and has low temperature impact properties specified at -50 deg C (LT50).

As well as BS 1501 224 490B LT50, we are also stockists of plates manufactured and certified to:

BS 1501 223 490B LT30 BS 1501 225 490B LT50

Chemical Requirements Chemical composition (ladle analysis, %) of steel 224

C Si Mn P S
0.22 max 0.10 - 0.40 0.90 - 1.60 0.030 max 0.030 max
Al (metallic) Cr* Cu* Mo* Ni
0.015 min 0.25 max 0.30 max 0.10 max 0.75 max
Tensile Requirements

Plate Thickness Tensile Rm Yield Re Elong. A
over 3 mm to 16 mm 490 - 610 N/mm2 325 N/mm2 min 21% min
over 16 mm to 40 mm 490 - 610 N/mm2 315 N/mm2 min 21% min
over 40 mm to 63 mm 490 - 610 N/mm2 305 N/mm2 min 20% min
over 63 mm to 100 mm 490 - 610 N/mm2 * 19% min
over 100 mm to 150 mm 490 - 610 N/mm2 * 19% min
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