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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 LT50

Chemical 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 values

Impact 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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