BS1501 – 161-430A/B

BS-161-430A/B is a British Standard specified steel which has now been superseded by the Euro Norm specification EN 10028.
As reference is still being made to this material by prospective clients, we have included details of BS -161-430A/B on this reference for information purposes. The steel is used in the fabrication of welded pressure vessels and boilers.
There are two types of BS1501-161-430 available which are …

  • Type A :
    Denotes specified min. room temperature tensile properties
  • Type B :
    As per Type A but with elevated temperature properties

Table 2: Mechanical Properties of BS1501 – 161-430A/B

Nominal Plate ThicknessTensile StrengthYield StrengthElongation
Over (mm)Up to and inc. (mm)min. N/mm²max. N/mm²min. N/mm²min. (%)

(Please note: the technical information above is for guidance only – for exact specifications please check with our Sales Team)

Table 1: Chemical Composition of BS1501 – 161-430A/B

C (max)0.25
Si (min)0.10
Si (max)0.35
Mn (min)0.60
Mn (max)1.40
P (max)0.030
S (max)0.030
*Cr (max)0.25
*Cu (max)0.30
*Mo (max)0.10
*Ni (max)0.30

(* Element accumulative total 0.70% max.)