Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
GOST 5950 4H5MFS1 (GOST 5950-2000) and IS 3748 103T3 (IS 3748:1990) are both steel grades.
Both fall under the Tool & Die Steels category.
GOST 5950 4H5MFS1 is typically used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts., while IS 3748 103T3 is commonly used for cold work tools and dies for blanking, trimming, chipping and shearing.
IS 3748 103T3 is defined under Bureau of Indian Standards (IS) (India).
As per chemical composition, GOST 5950 4H5MFS1 vs IS 3748 103T3 is a 58.5% 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
GOST 5950 4H5MFS1
IS 3748 103T3
Tensile Strength
1350-1650 MPa
Not specified
Yield Strength
1150 MPa min
Not specified
Elongation
9% min
Not specified
Hardness
44-50 HRC
<=220 HB
Condition
Not specified
Annealed (maximum Brinell hardness)
Typical Applications
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
IS 3748 103T3
Cold work tools and dies for blanking, trimming, chipping and shearing
Key Differences
GOST 5950 4H5MFS1 specifies Cr, Mo, V which are not specified for IS 3748 103T3.
IS 3748 103T3 specifies Mn, S, P which are not specified for GOST 5950 4H5MFS1.
Can GOST 5950 4H5MFS1 Be Substituted With IS 3748 103T3?
GOST 5950 4H5MFS1 and IS 3748 103T3 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 GOST 5950 4H5MFS1 and IS 3748 103T3?
GOST 5950 4H5MFS1 specifies Cr, Mo, V which are not specified for IS 3748 103T3. IS 3748 103T3 specifies Mn, S, P which are not specified for GOST 5950 4H5MFS1.
Can GOST 5950 4H5MFS1 be substituted with IS 3748 103T3?
GOST 5950 4H5MFS1 and IS 3748 103T3 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.