Post Stock Login Register

IS 3748 103T3 vs GB/T 1299 4Cr5MoSiV1

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

IS 3748 103T3 (IS 3748:1990) and GB/T 1299 4Cr5MoSiV1 (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. IS 3748 103T3 is typically used for cold work tools and dies for blanking, trimming, chipping and shearing, while GB/T 1299 4Cr5MoSiV1 is commonly used for die casting dies, forging dies, extrusion tools. IS 3748 103T3 is defined under Bureau of Indian Standards (IS), originating from India, while GB/T 1299 4Cr5MoSiV1 is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, IS 3748 103T3 vs GB/T 1299 4Cr5MoSiV1 is a 60% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 3748 103T3:
IS 3748 118T3 IS 3748 55T8 IS 3748 60T6 IS 3748 65T6 IS 3748 133T3 IS 3748 75T6 IS 1570 (Part 6) 118T3 IS 3748 70T3 IS 1570 (Part 6) 103T3 IS 3748 70T6 GB/T 1299 3Cr2W8V IS 3748 50T8
Match Breakdown
CHEMISTRY MATCH
60%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property IS 3748 103T3 GB/T 1299 4Cr5MoSiV1
Standard IS 3748:1990 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.95-1.10 0.32–0.45
Si (%) 0.10-0.30 0.80–1.20
Mn (%) <=0.40 0.20–0.50
S (%) <=0.035 Not specified
P (%) <=0.035 Not specified
Cr (%) Not specified 4.75–5.50
Mo (%) Not specified 1.20–1.75
V (%) Not specified 0.80–1.20
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 103T3 GB/T 1299 4Cr5MoSiV1
Hardness <=220 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Hardness HRC (hardened) Not specified 42–54
Hardness HB (annealed) Not specified ≤235
Typical Applications
IS 3748 103T3
Cold work tools and dies for blanking, trimming, chipping and shearing
GB/T 1299 4Cr5MoSiV1
Die casting dies, forging dies, extrusion tools
Key Differences
Can IS 3748 103T3 Be Substituted With GB/T 1299 4Cr5MoSiV1?
IS 3748 103T3 and GB/T 1299 4Cr5MoSiV1 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 103T3
No active listings currently.
GB/T 1299 4Cr5MoSiV1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–4100 mm (106.3–161.42 in)
On M-EX Right Now
IS 3748 103T3
0 active listings and RFQs →
GB/T 1299 4Cr5MoSiV1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3748 103T3 and GB/T 1299 4Cr5MoSiV1?
IS 3748 103T3 specifies S, P which are not specified for GB/T 1299 4Cr5MoSiV1. GB/T 1299 4Cr5MoSiV1 specifies Cr, Mo, V which are not specified for IS 3748 103T3.
Can IS 3748 103T3 be substituted with GB/T 1299 4Cr5MoSiV1?
IS 3748 103T3 and GB/T 1299 4Cr5MoSiV1 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.