Grade 56Si7
European Standard Steel Grade 1.5026
Corresponding Standard EN 10132-4-2002
Classification Spring Steel
56Si7 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.52 1.6 0.6 - - - - -
Maximum Value 0.6 2 0.9 0.025 0.025 0.4 0.4 0.1
56Si7 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 ≥12 HV
≤230
0.3≤t≤3 Tempering (+QT) 1200~1700 370~520
Approximate Comparison Table
Germany France European Standard
DIN EN/DIN NF EN/NF EN Numerical Grade
55Si7 55Si7RR 56Si7 1.5026

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