Material – BS 243 – 430

Standard Specification for Steel Forgings for Pressure Purposes

Group - Ferrous Mild Steel Alloys

Sub Group - BS 243 - 430 Steel Forgings for Pressure Purposes

Application - Intended for Valve, Pump, General Engineering, Automotive and Other Industries

Grade Belongs to the Industry - Forging

Chemical Composition
CarbonC %0.120 - 0.200
SiliconSi %0.150 - 0.400
ManganeseMn %0.500 - 0.800
PhosphorusP %0.030 max.
SulphurS %0.025 max.
ChromiumCr %0.250 max.
NickelNi %0.400 max.
MolybdenumMo %0.250 - 0.350
CopperCu %0.300 max.
IronFe %Balance
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Heat Treatment
Normalising + Tempering or Hardening + Tempering
Mechanical Properties
Tensile Strength in Mpa430 - 580
Yield Strength in Mpa250 min.
Elongation in %19 min.
Reduction of Area in %-
Hardness in BHN-
Impact in Joule27 J @ RT

Cross Reference Table

Material Standard Country Grade Belong to the Industry
SA-352 Grade LC1 ASME USA Casting
4422 AISI USA Bar
G20Mo5 DIN Germany Casting
J12522 UNS USA Casting
SCPL 11 JIS Japan Casting
G18Mo5 UNI Italy Casting
A352 LC1 ASTM USA Casting