Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
JIS G4804 SUM25 (JIS G 4804:2021) and IS 4432 10C8S10 (IS 4432:1988) are both steel grades.
Both fall under the Free Machining Steel category.
JIS G4804 SUM25 is typically used for high volume automatic machining, precision parts, while IS 4432 10C8S10 is commonly used for forgings and fabrication of case-hardened machine or automobile parts.
JIS G4804 SUM25 is defined under Japanese Industrial Standards (JIS), originating from Japan, while IS 4432 10C8S10 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, JIS G4804 SUM25 vs IS 4432 10C8S10 is a 73.2% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4804 SUM25
IS 4432 10C8S10
Tensile Strength
390–510 MPa
Not specified
Hardness
≤163 HB
Not specified
Core Tensile Strength
Not specified
600-850 MPa (16 mm) / 550-800 MPa (30 mm)
Core Yield Strength
Not specified
>=400 MPa (16 mm) / >=330 MPa (30 mm)
Core Elongation
Not specified
>=12% (16 mm) / >=14% (30 mm)
Core Reduction of Area
Not specified
>=35% (16 mm) / >=40% (30 mm)
Hardness, annealed (A)
Not specified
<=150 HB
Typical Applications
JIS G4804 SUM25
High volume automatic machining, precision parts
IS 4432 10C8S10
Forgings and fabrication of case-hardened machine or automobile parts
Key Differences
IS 4432 10C8S10 specifies Si which is not specified for JIS G4804 SUM25.
Can JIS G4804 SUM25 Be Substituted With IS 4432 10C8S10?
JIS G4804 SUM25 and IS 4432 10C8S10 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.
What is the difference between JIS G4804 SUM25 and IS 4432 10C8S10?
IS 4432 10C8S10 specifies Si which is not specified for JIS G4804 SUM25.
Can JIS G4804 SUM25 be substituted with IS 4432 10C8S10?
JIS G4804 SUM25 and IS 4432 10C8S10 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.