Grade C125S
Germany W-Nr. 1.1224
Corresponding Standard DIN EN 10132-4-2000(+AC:2002)
Cold-Rolled Narrow Steel Strip for Heat Treatment-Technical Delivery Conditions Part 4: Spring Steels and Other Applications (Includes Corrigendum AC:2002)
Classification Spring Steel
C125S Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 1.2 0.15 0.3 - - - - -
Maximum Value 1.3 0.35 0.6 0.025 0.025 0.4 0.4 0.1
C125S 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) ≤740 ≤600 ≥11 ≤230
0.3≤t≤3 Cold Rolled (+CR) ≤1200 ≤325
0.3≤t≤3 Tempering (+QT) 1200~2100 370~630
C125S Corresponding Standards(Same grade name, different standards)

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