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IS 3748 T55Si7 vs DIN EN ISO 4957 1.2379

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

IS 3748 T55Si7 (IS 3748:1990) and DIN EN ISO 4957 1.2379 (DIN EN ISO 4957:2018-11) are both steel grades. Both fall under the Tool & Die Steels category. IS 3748 T55Si7 is typically used for cold work tools and dies for blanking, trimming, chipping and shearing, while DIN EN ISO 4957 1.2379 is commonly used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies. IS 3748 T55Si7 is defined under Bureau of Indian Standards (IS), originating from India, while DIN EN ISO 4957 1.2379 is defined under European Standard (EN), originating from Europe.

As per chemical composition, IS 3748 T55Si7 vs DIN EN ISO 4957 1.2379 is a 57.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 3748 T55Si7:
IS 1570 (Part 6) 60T6 EN ISO 4957 1.2316 IS 1570 (Part 6) 133T3 IS 1570 (Part 6) 70T6 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 IS 3748 103T3 IS 1570 (Part 6) 103T3 IS 3748 118T3 IS 1570 (Part 6) 118T3 IS 3748 133T3 GB/T 1299 3Cr2W8V
Match Breakdown
CHEMISTRY MATCH
57.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property IS 3748 T55Si7 DIN EN ISO 4957 1.2379
Standard IS 3748:1990 DIN EN ISO 4957:2018-11
Category Tool & Die Steels Tool & Die Steels
C (%) 0.50-0.60 1.50–1.60
Si (%) 1.50-2.00 0.10–0.40
Mn (%) 0.80-1.00 0.25–0.60
S (%) <=0.035 ≤0.030
P (%) <=0.035 ≤0.030
Cr (%) Not specified 11.00–13.00
Mo (%) Not specified 0.70–1.00
V (%) Not specified 0.80–1.10
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 3748 T55Si7 DIN EN ISO 4957 1.2379
Hardness <=230 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Hardness (annealed) Not specified ≤255 HB
Hardness (hardened) Not specified 58–62 HRC
Compressive Strength Not specified 2600 MPa
Typical Applications
IS 3748 T55Si7
Cold work tools and dies for blanking, trimming, chipping and shearing
DIN EN ISO 4957 1.2379
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
Key Differences
Can IS 3748 T55Si7 Be Substituted With DIN EN ISO 4957 1.2379?
IS 3748 T55Si7 and DIN EN ISO 4957 1.2379 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.
Forms & Sizes Available on M-EX
IS 3748 T55Si7
No active listings currently.
DIN EN ISO 4957 1.2379
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–3300 mm (110.24–129.92 in)
On M-EX Right Now
IS 3748 T55Si7
0 active listings and RFQs →
DIN EN ISO 4957 1.2379
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3748 T55Si7 and DIN EN ISO 4957 1.2379?
DIN EN ISO 4957 1.2379 specifies Cr, Mo, V which are not specified for IS 3748 T55Si7.
Can IS 3748 T55Si7 be substituted with DIN EN ISO 4957 1.2379?
IS 3748 T55Si7 and DIN EN ISO 4957 1.2379 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.