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Pressure Vessel Plate BS 1501 223 490B LT30

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The grade BS 1501 223 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 -30 deg C (LT30).As well as BS 1501 223 490B LT30, we are also stockists of plates manufactured and certified to:BS 1501 224 490B LT50 BS 1501 225 490B LT50Chemical Requirements Chemical composition (ladle analysis, %) of steel 223 Grade 490













C
Si
Mn
P
S




0.20 max
0.10 - 0.50
0.90 - 1.60
0.030 max
0.030 max




Nb
Cr*
Cu*
Mo*
Ni




0.01 - 0.06
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
355 N/mm2 min
21% min




over 16 mm to 40 mm
490 - 610 N/mm2
345 N/mm2 min
21% min




over 40 mm to 63 mm
490 - 610 N/mm2
340 N/mm2 min
20% min




over 63 mm to 100 mm
490 - 610 N/mm2
*
20% min




over 100 mm to 150 mm
490 - 610 N/mm2
*
20% min











Charpy V-notch impact valuesImpact test values, average of three at tempereature specified below












RT
0oC
-15oC
-30oC




61 J min
55 J min
41 J min
27 J min











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