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C55K steel

C55K steel plate, UNE36011 C55K steel plate, under UNE36011 standard, we can regardC55K steel plate as high carbon steel.

C55K steel plate is one mainly of high carbon steel,UNE36011 C55K steel plate Comparied of steel grades JUS Č.1630,DIN C55, BS 070M55,GOST55 and AISI    1055 steel.
 

  C55K
UNE 36011
Number:1.0535

Comparision of steel grades

JIS G 4051 S 55 C
DIN 17200 C 55
NFA 33-101 AF70-C 55
UNI 7846 C 55
BS 970 070 M 55
EN 10083-2 C 55 
SAE J 403-AISI 1055

Chemical Composition of C55K steel

Grade C(%)min-max Si(%)min-max Mn(%)min-max P(%)max S(%)max Cr(%)min-max
C55K 0.52-0.60 0.15-0.35 0.60-0.90 0.025 0.025 0.20-0.40

Mechanical Properties of C55K steel

Grade Condition Yield Strength
R°(Mpa)
Tensile Strength
Rm
(Mpa)
Elon-
gation
A5(%)
Hardness
HRC
Quenching
Temperature
(℃)
Benda-
bility
Nominal Thickness,t
1.95mm≤t≤10.0mm
Rolled Annealed
  C55K Rolled
Annealed
Water-quenched
Oil quenched
500
350
825
550
2510
2120
18
30
61
57
805
845
Min.reco-mmended
Bending radius
(≤90°)
3.0
×t
1.0×t