Material – BS 735 A 51

Standard Specification for Steels for Mechanical and Allied Engineering Purposes

Group - Ferrous Mild Steel Alloys

Sub Group - BS 735 A 51 Steels for Mechanical and Allied Engineering Purposes

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

Grade Belongs to the Industry - Hot Formed Spring

Chemical Composition
CarbonC %0.480 - 0.540
SiliconSi %0.200 - 0.350
ManganeseMn %0.700 - 1.000
PhosphorusP %0.035 max.
SulphurS %0.035 max.
ChromiumCr %0.900 - 1.200
VanadiumV %0.100 - 0.200
IronFe %Balance
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Heat Treatment
Annealing or Normalising or Hardening + Tempering
Mechanical Properties
Tensile Strength in Mpa621 min.
Yield Strength in Mpa345 min.
Elongation in %20 min.
Reduction of Area in %-
Hardness in HB277 max.
Impact in Joule-

Cross Reference Table

Material Standard Country Grade Belong to the Industry
1606.0000 SS Sweden Casting
50 CD 4-M AFNOR NF France Casting
5152 SAE USA Steel
1050 AISI USA Forging, Bar, Wire, and Shape
C 3 MSZ Hungary Steel
C48GW-N-A JIS Japan Forging
A732 4A ASTM USA Casting