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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 specificationThe 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 LT50Chemical 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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