EN 10089:2002 55Si7 Steel: Specifications & Listings

EN 10089:2002 55Si7: Silicon manganese spring steel

Forms: Round Bar Category: Spring Steel
Grade Details
GradeEN 10089:2002 55Si7
Standard EN 10089:2002
ApplicationsLeaf springs, coil springs, torsion bars
Most Active InWest (Maharashtra, Gujarat)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
BS 970 EN45 BS 970:1955 UK 6 listings, 3 RFQs →
AISI 9255 SAE USA Not yet on M-EX
JIS G4801 SUP6 JIS G 4801:2005 Japan 2 listings, 0 RFQs →
BS 970 EN45A BS 970:1955 UK No activity yet
Market Snapshot
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Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Deep Supply
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 EN45 BS 970:1955 Strong Match
IS 1570 (Part 4) 55Si7 IS 1570 (Part 4):1988 Strong Match
IS 1570 (Part 4) 60Si7 IS 1570 (Part 4):1988 Strong Match
BS 970 EN45A BS 970:1955 Strong Match
IS 1570 (Part 4) 65Si7 IS 1570 (Part 4):1988 Strong Match
BS 970 EN46 BS 970:1955 Close Alternative
BS 970 EN42 BS 970:1955 Related Material
BS 970 EN42B BS 970:1955 Related Material
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
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.

Popular forms for this grade:

Round Bar (3)

Active EN 10089:2002 55Si7 Listings on M-EX (For Sale)

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EN 10089:2002 55Si7 Round Bar
2.900 MT
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EN 10089:2002 55Si7 Round Bar
1.300 MT
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EN 10089:2002 55Si7 Round Bar
2.000 MT
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