Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 4367 25Cr13Mo6 (IS 4367:1991) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
IS 4367 25Cr13Mo6 is typically used for used in boilers, pressure vessels, steam pipes, heat exchangers, refinery equipment, and power plant components., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
IS 4367 25Cr13Mo6 is defined under Bureau of Indian Standards (IS) (India).
As per chemical composition, IS 4367 25Cr13Mo6 vs GOST 4543 12HN3A is a 59.2% match.
As per mechanical properties, the match is 18.8%.
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
IS 4367 25Cr13Mo6
GOST 4543 12HN3A
Tensile Strength
900-1050 MPa
850-1050 MPa
Yield Strength
700 MPa min
685 MPa min
Elongation
>=15%
11% min
Izod Impact
55 J min
Not specified
Hardness
266-311 HB
58-62 HRC (case)
Hardness (soft annealed)
<=230 HB
Not specified
Condition
Hardened and tempered, ruling section up to 150 mm
Not specified
Typical Applications
IS 4367 25Cr13Mo6
Used in boilers, pressure vessels, steam pipes, heat exchangers, refinery equipment, and power plant components.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
IS 4367 25Cr13Mo6 specifies Mo, S, P which are not specified for GOST 4543 12HN3A.
Can IS 4367 25Cr13Mo6 Be Substituted With GOST 4543 12HN3A?
IS 4367 25Cr13Mo6 and GOST 4543 12HN3A 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 IS 4367 25Cr13Mo6 and GOST 4543 12HN3A?
IS 4367 25Cr13Mo6 specifies Mo, S, P which are not specified for GOST 4543 12HN3A.
Can IS 4367 25Cr13Mo6 be substituted with GOST 4543 12HN3A?
IS 4367 25Cr13Mo6 and GOST 4543 12HN3A 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.