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JIS G4801 SUP9 vs EN 10089 50CrV4

Minimal Match — 52% match based on chemical composition and mechanical property overlap.

JIS G4801 SUP9 (JIS G 4801:2005) and EN 10089 50CrV4 (EN 10089:2002) are both steel grades. Both fall under the Spring Steel category. JIS G4801 SUP9 is typically used for automotive leaf springs, suspension springs, while EN 10089 50CrV4 is commonly used for valve springs, high duty coil springs, hand tools. JIS G4801 SUP9 is defined under Japanese Industrial Standards (JIS), originating from Japan, while EN 10089 50CrV4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, JIS G4801 SUP9 vs EN 10089 50CrV4 is a 78% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 52%.

Frequently Compared With JIS G4801 SUP9:
EN 10089 55Cr3 EN 10089 55Si7 EN 10083-3 51CrV4 GB/T 1222 55CrMnA IS 3431 50Cr4V2 IS 3195 113C6 IS 3195 50Cr4V2 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V IS 5517 55Cr3 IS 1570 (Part 4) 55Si7
Match Breakdown
CHEMISTRY MATCH
78%
MECHANICAL MATCH
0%
OVERALL
52%
Specifications
Property JIS G4801 SUP9 EN 10089 50CrV4
Standard JIS G 4801:2005 EN 10089:2002
Category Spring Steel Spring Steel
C (%) 0.52–0.60 0.47–0.55
Mn (%) 0.65–0.95 0.70–1.10
Cr (%) 0.65–0.95 0.90–1.20
Si (%) 0.15–0.35 0.15–0.35
P (%) ≤0.030 Not specified
S (%) ≤0.030 Not specified
V (%) Not specified 0.10–0.20
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 SUP9 EN 10089 50CrV4
Tensile Strength 1180 MPa min (oil hardened) 1100–1300 MPa
Yield Strength ≥1030 MPa ≥1000 MPa
Elongation ≥7% ≥8%
Hardness 363–429 HB 321–375 HB
Typical Applications
JIS G4801 SUP9
Automotive leaf springs, suspension springs
EN 10089 50CrV4
Valve springs, high duty coil springs, hand tools
Key Differences
Can JIS G4801 SUP9 Be Substituted With EN 10089 50CrV4?
JIS G4801 SUP9 and EN 10089 50CrV4 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 SUP9
Round Bar → (4 listings)
Diameter: 30–35 mm (1.18–1.38 in)
Length: 3900–6700 mm (153.54–263.78 in)
EN 10089 50CrV4
Round Bar → (3 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 5000–6500 mm (196.85–255.91 in)
On M-EX Right Now
JIS G4801 SUP9
4 active listings and RFQs →
EN 10089 50CrV4
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4801 SUP9 and EN 10089 50CrV4?
JIS G4801 SUP9 specifies P, S which are not specified for EN 10089 50CrV4. EN 10089 50CrV4 specifies V which is not specified for JIS G4801 SUP9.
Can JIS G4801 SUP9 be substituted with EN 10089 50CrV4?
JIS G4801 SUP9 and EN 10089 50CrV4 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.