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JIS G4801 SUP9A vs EN 10083-1 51CrV4

Minimal Match — 48.1% match based on chemical composition and mechanical property overlap.

JIS G4801 SUP9A (JIS G 4801:2005) and EN 10083-1 51CrV4 (EN 10083-1:1991) are both steel grades. Both fall under the Spring Steel category. JIS G4801 SUP9A is typically used for heavy duty leaf springs, torsion bars, while EN 10083-1 51CrV4 is commonly used for quenched and tempered machine parts; non alloy steels also normalized (clause 1). JIS G4801 SUP9A is defined under Japanese Industrial Standards (JIS), originating from Japan, while EN 10083-1 51CrV4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, JIS G4801 SUP9A vs EN 10083-1 51CrV4 is a 72.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 48.1%.

Frequently Compared With JIS G4801 SUP9A:
EN 10089 55Cr3 EN 10089 50CrV4 EN 10089 55Si7 GB/T 1222 55CrMnA EN 10083-3 51CrV4 IS 3195 50Cr4V2 IS 3195 60Cr4V2 IS 3195 113C6 IS 3431 50Cr4V2 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V IS 5517 55Cr3
Match Breakdown
CHEMISTRY MATCH
72.2%
MECHANICAL MATCH
0%
OVERALL
48.1%
Specifications
Property JIS G4801 SUP9A EN 10083-1 51CrV4
Standard JIS G 4801:2005 EN 10083-1:1991
Category Spring Steel Spring Steel
C (%) 0.56–0.64 0.47-0.55
Mn (%) 0.70–1.00 0.70-1.10
Cr (%) 0.70–1.00 0.90-1.20
Si (%) 0.15–0.35 <=0.40
P (%) ≤0.030 <=0.035
S (%) ≤0.030 <=0.035
V (%) Not specified 0.10-0.25
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4801 SUP9A EN 10083-1 51CrV4
Tensile Strength ≥1180 MPa 1100 to 1300 MPa
Yield Strength ≥1030 MPa 900 MPa min
Elongation ≥7% 9% min
Condition Not specified Quenched and tempered, ruling section d <= 16 mm
Hardness Not specified Soft annealed: 248 HB max
Typical Applications
JIS G4801 SUP9A
Heavy duty leaf springs, torsion bars
EN 10083-1 51CrV4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
Can JIS G4801 SUP9A Be Substituted With EN 10083-1 51CrV4?
JIS G4801 SUP9A and EN 10083-1 51CrV4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
JIS G4801 SUP9A
Round Bar → (2 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 3700–5500 mm (145.67–216.54 in)
EN 10083-1 51CrV4
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On M-EX Right Now
JIS G4801 SUP9A
2 active listings and RFQs →
EN 10083-1 51CrV4
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Frequently Asked Questions
What is the difference between JIS G4801 SUP9A and EN 10083-1 51CrV4?
EN 10083-1 51CrV4 specifies V which is not specified for JIS G4801 SUP9A.
Can JIS G4801 SUP9A be substituted with EN 10083-1 51CrV4?
JIS G4801 SUP9A and EN 10083-1 51CrV4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.