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EN 10089 55Si7 Steel — Specifications & Listings

EN 10089Silicon manganese spring steel

Forms: Round Bar Category: Spring Steel
Grade Details
GradeEN 10089 55Si7
StandardEN 10089
DescriptionSilicon manganese spring steel
ApplicationsLeaf springs, coil springs, torsion bars
Equivalent / Similar Grades
Grade Standard Region
EN45 BS970 UK
AISI 9255 SAE USA
SUP6 JIS Japan
Chemical Composition (%)
C Si Mn S P
0.51–0.59 1.50–2.00 0.70–1.00 ≤0.040 ≤0.040
Mechanical Properties
Tensile Strength 1000–1200 MPa
Yield Strength ≥900 MPa
Elongation ≥7%
Hardness 285–363 HB
Typical Available Sizes
Round Bar 10mm–75mm dia
Flat Bar 20×5mm–100×20mm
Spring Flat 3×20mm–16×100mm
Sizes are indicative. Contact seller for exact availability.

Active EN 10089 55Si7 Listings on M-EX

EN 10089 55Si7 Round Bar
2.400 MT
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EN 10089 55Si7 Round Bar
2.300 MT
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EN 10089 55Si7 Round Bar
1.900 MT
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