Grade C90S
European Standard Steel Grade 1.1217
Corresponding Standard EN 10132-4-2002
Cold rolled narrow steel strip for heat treatment Ð Technical delivery conditions Ð Part 4: Spring steels and other applications
Classification Spring Steel
C90S Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.85 0.15 0.4 - - - - -
Maximum Value 0.95 0.35 0.7 0.025 0.025 0.4 0.4 0.1
C90S Mechanical Properties
thickness
t
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
0.3≤t≤3 Annealing (+A) or Annealing and Flattening (+LC) ≤680 ≤545 ≥14 HV
≤215
0.3≤t≤3 Cold Rolled (+CR) ≤1200 ≤325
0.3≤t≤3 Tempering (+QT) 1200~2100 370~600
C90S Corresponding Standards(Same grade name, different standards)

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