Grade C55S
European Standard Steel Grade 1.1204
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
C55S Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.52 0.15 0.6 - - - - -
Maximum Value 0.6 0.35 0.9 0.025 0.025 0.4 0.4 0.1
Approximate Comparison Table Spring Steel
Germany France European Standard United Kingdom
DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade BS EN/BS
Ck55 1.1203 C50RR C55S 1.1204 CS50
C55S Corresponding Standards(Same grade name, different standards)

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