BS 1501 161 430 A/B

  • Boiler

A significant part of Brown McFarlane's Boiler plate stock inventory is made up of plates certified to BS 1501 161 430A and BS 1501 161 430B.

  • We ensure that these plates are in our stock at all times.
  • The grade BS 1501 161 430A shows that the steel will have a minimum tensile strength of 430 N/mm2 (430).

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Requirements

Chemical Requirements

Chemical composition (ladle analysis, %) of steel 161-430.

CSiMnPS
0.25 max 0.10 - 0.35 0.60 - 1.40 0.030max 0.030max
Cr* Cu* Mo* Ni*  
0.25 max 0.30max 0.10max 0.30max  

Tensile Requirements

Plate ThicknessTensile RmYield ReElong. A
over 3 mm to 16 mm 430 - 550N/mm2 250N/mm2 min 23% min
over 16 mm to 40 mm 430 - 550 N/mm2 240N/mm2 min 23% min
over 40 mm to 63 mm 430 - 550 N/mm2 230N/mm2 min 22% min
over 63 mm to 100 mm 430 - 550 N/mm2 220 N/mm2 min 21% min
over 100 mm to 150 mm 430 -550 N/mm2 210 N/mm2 min 21% min

Strength

Min. values for proof strength Rp0,2 (MPa) at elevated temperatures.

Thickness150°C200°C250°C300°C350°C400°C
3 mmto 16 mm 222 215 192 161 153 148
over 16 to 40 mm 210 202 181 161 153 148
over 40 to 63 mm 200 192 178 161 153 148
over 63 to 100 mm 186 181 172 161 153 148