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IS 3748 T40Ni10Cr3Mo6 vs GB/T 1299 4Cr5MoSiV

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

IS 3748 T40Ni10Cr3Mo6 (IS 3748:1990) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. IS 3748 T40Ni10Cr3Mo6 is typically used for cold work tools and dies for blanking, trimming, chipping and shearing, while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. IS 3748 T40Ni10Cr3Mo6 is defined under Bureau of Indian Standards (IS), originating from India, while GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, IS 3748 T40Ni10Cr3Mo6 vs GB/T 1299 4Cr5MoSiV is a 55.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 3748 T40Ni10Cr3Mo6:
IS 3748 103T3 DIN EN ISO 4957 1.2379 IS 3748 118T3 IS 3748 133T3 IS 1570 (Part 6) 133T3 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 118T3 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F
Match Breakdown
CHEMISTRY MATCH
55.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property IS 3748 T40Ni10Cr3Mo6 GB/T 1299 4Cr5MoSiV
Standard IS 3748:1990 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.36-0.44 0.32–0.45
Si (%) 0.10-0.35 0.80–1.20
Mn (%) 0.40-0.70 0.20–0.50
Ni (%) 2.25-2.75 Not specified
Cr (%) 0.50-0.80 4.75–5.50
Mo (%) 0.40-0.70 1.10–1.60
S (%) <=0.035 Not specified
P (%) <=0.035 Not specified
V (%) Not specified 0.30–0.60
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 T40Ni10Cr3Mo6 GB/T 1299 4Cr5MoSiV
Hardness <=255 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Hardness HRC (hardened) Not specified 40–54
Hardness HB (annealed) Not specified ≤235
Typical Applications
IS 3748 T40Ni10Cr3Mo6
Cold work tools and dies for blanking, trimming, chipping and shearing
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can IS 3748 T40Ni10Cr3Mo6 Be Substituted With GB/T 1299 4Cr5MoSiV?
IS 3748 T40Ni10Cr3Mo6 and GB/T 1299 4Cr5MoSiV 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 T40Ni10Cr3Mo6
No active listings currently.
GB/T 1299 4Cr5MoSiV
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–2700 mm (98.43–106.3 in)
On M-EX Right Now
IS 3748 T40Ni10Cr3Mo6
0 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3748 T40Ni10Cr3Mo6 and GB/T 1299 4Cr5MoSiV?
IS 3748 T40Ni10Cr3Mo6 specifies Ni, S, P which are not specified for GB/T 1299 4Cr5MoSiV. GB/T 1299 4Cr5MoSiV specifies V which is not specified for IS 3748 T40Ni10Cr3Mo6.
Can IS 3748 T40Ni10Cr3Mo6 be substituted with GB/T 1299 4Cr5MoSiV?
IS 3748 T40Ni10Cr3Mo6 and GB/T 1299 4Cr5MoSiV 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.