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S50C steel

JISG4051 S50C Description
JISG4051 S50C steel is a medium carbon steel is used when greater strength and hardness is desired than in the "as rolled" condition.

JISG4051 S50C Applications
Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.

The equivalent standards of S50C steel 

  S50C
JIS G 4051
Comparision of steel grades
DIN 1C50
AISI 1050
UNI 7846 -
BS 970 -
UNE 36011 -
SAE J 403-AISI -

Chemical Composition of S50C steel

Grade C Si Mn P(%)
max
S(%)
max
Cr(%)
max
Ni(%)
max
Cu(%)
max
S50C 0.47-0.55 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.25 0.25

Mechanical Properties of S50C steel

Tensile
Strength
σb(MPa)
Yield Strength
σS(MPa)  
Elon-
Gation Ration
δ5 (%)
Reduction of area
Psi(%)
Impact merit
AKV (J)
Resilient value
AKV(J/cm2)
Degree of
hardness
Annealed
steel
Test
Specimen
Size
(mm)
≥630 ≥375 ≥14 ≥40 ≥31 ≥39 ≤241HB ≤207HB 25