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JIS G4801 SUP9 Steel — Specifications & Listings

JIS G4801Chrome manganese spring steel, JIS standard

Forms: Round Bar Category: Spring Steel
Grade Details
GradeJIS G4801 SUP9
StandardJIS G4801
DescriptionChrome manganese spring steel, JIS standard
ApplicationsAutomotive leaf springs, suspension springs
Equivalent / Similar Grades
Grade Standard Region
55Cr3 DIN Germany
SAE5155 SAE USA
EN45 BS970 UK
55CrMnA GB China
Chemical Composition (%)
C Mn Cr Si
0.52–0.60 0.65–0.95 0.65–0.95 0.15–0.35
Mechanical Properties
Tensile Strength 1180 MPa min (oil hardened)
Yield Strength ≥1030 MPa
Elongation ≥7%
Hardness 363–429 HB
Typical Available Sizes
Round Bar 10mm–75mm dia
Flat Bar 15×5mm–100×20mm
Spring Flat 3×25mm–20×125mm
Sizes are indicative. Contact seller for exact availability.

Active JIS G4801 SUP9 Listings on M-EX

JIS G4801 SUP9 Round Bar
4.600 MT
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JIS G4801 SUP9 Round Bar
2.000 MT
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JIS G4801 SUP9 Round Bar
2.800 MT
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JIS G4801 SUP9 Round Bar
1.700 MT
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