Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN ISO 4957 X40CrMoV5-1 (EN ISO 4957:2018) and IS 3748 103T3 (IS 3748:1990) are both steel grades.
Both fall under the Tool & Die Steels category.
EN ISO 4957 X40CrMoV5-1 is typically used for die casting dies, extrusion dies, forging dies, hot shear blades, while IS 3748 103T3 is commonly used for cold work tools and dies for blanking, trimming, chipping and shearing.
EN ISO 4957 X40CrMoV5-1 is defined under European Standard (EN), originating from Europe, while IS 3748 103T3 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, EN ISO 4957 X40CrMoV5-1 vs IS 3748 103T3 is a 58.9% 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
EN ISO 4957 X40CrMoV5-1
IS 3748 103T3
Hardness HRC (hardened)
42–54
Not specified
Hardness HB (annealed)
≤235
Not specified
Hot Strength
Excellent to 600°C
Not specified
Hardness
Not specified
<=220 HB
Condition
Not specified
Annealed (maximum Brinell hardness)
Typical Applications
EN ISO 4957 X40CrMoV5-1
Die casting dies, extrusion dies, forging dies, hot shear blades
IS 3748 103T3
Cold work tools and dies for blanking, trimming, chipping and shearing
Key Differences
EN ISO 4957 X40CrMoV5-1 specifies Cr, Mo, V which are not specified for IS 3748 103T3.
IS 3748 103T3 specifies S, P which are not specified for EN ISO 4957 X40CrMoV5-1.
Can EN ISO 4957 X40CrMoV5-1 Be Substituted With IS 3748 103T3?
EN ISO 4957 X40CrMoV5-1 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 EN ISO 4957 X40CrMoV5-1 and IS 3748 103T3?
EN ISO 4957 X40CrMoV5-1 specifies Cr, Mo, V which are not specified for IS 3748 103T3. IS 3748 103T3 specifies S, P which are not specified for EN ISO 4957 X40CrMoV5-1.
Can EN ISO 4957 X40CrMoV5-1 be substituted with IS 3748 103T3?
EN ISO 4957 X40CrMoV5-1 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.