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AISI 1025 vs JIS G4051 S25C

Strong Match — 94.9% match based on chemical composition and mechanical property overlap.

AISI 1025 and JIS G4051 S25C (JIS G4051:2009) are both steel grades. Both fall under the Carbon Steel category. AISI 1025 is typically used for forgings, shafts, general engineering, while JIS G4051 S25C is commonly used for shafts, pins, lightly stressed parts. AISI 1025 is defined under AISI, originating from United States, while JIS G4051 S25C is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, AISI 1025 vs JIS G4051 S25C is a 92.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 94.9%.

Frequently Compared With AISI 1025:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
92.3%
MECHANICAL MATCH
100%
OVERALL
94.9%
Specifications
Property AISI 1025 JIS G4051 S25C
Standard AISI JIS G4051:2009
Category Carbon Steel Carbon Steel
C (%) 0.22–0.28 0.22-0.28
Mn (%) 0.30–0.60 0.30-0.60
S (%) ≤0.050 <=0.035
P (%) ≤0.030 <=0.030
Si (%) Not specified 0.15-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 1025 JIS G4051 S25C
Tensile Strength 460–610 MPa >=460 MPa
Elongation ≥20% >=20%
Hardness ≤143 HB Not specified
Typical Applications
AISI 1025
Forgings, shafts, general engineering
JIS G4051 S25C
Shafts, pins, lightly stressed parts
Key Differences
Can AISI 1025 Be Substituted With JIS G4051 S25C?
AISI 1025 and JIS G4051 S25C overlap closely enough on chemistry and mechanical properties that JIS G4051 S25C is often considered as a substitute for AISI 1025 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
AISI 1025
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6200–6800 mm (244.09–267.72 in)
JIS G4051 S25C
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5800–5800 mm (228.35–228.35 in)
On M-EX Right Now
AISI 1025
3 active listings and RFQs →
JIS G4051 S25C
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 1025 and JIS G4051 S25C?
JIS G4051 S25C specifies Si which is not specified for AISI 1025.
Can AISI 1025 be substituted with JIS G4051 S25C?
AISI 1025 and JIS G4051 S25C overlap closely enough on chemistry and mechanical properties that JIS G4051 S25C is often considered as a substitute for AISI 1025 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.