Grade 48Si7
European Standard Steel Grade 1.5021
Corresponding Standard EN 10132-4-2002
Classification Spring Steel
48Si7 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.45 1.6 0.5 - - - - -
Maximum Value 0.52 2 0.8 0.025 0.025 0.4 0.4 0.1
48Si7 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) ≤720 ≤580 ≥13 HV
≤225
0.3≤t≤3 Tempering (+QT) 1200~1700 370~520
48Si7 Corresponding Standards(Same grade name, different standards)

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