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IS 3748 T55Si7Mo3 vs GB/T 1299 3Cr2W8V

Minimal Match — 33.7% match based on chemical composition and mechanical property overlap.

IS 3748 T55Si7Mo3 (IS 3748:1990) and GB/T 1299 3Cr2W8V (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. IS 3748 T55Si7Mo3 is typically used for cold work tools and dies for blanking, trimming, chipping and shearing, while GB/T 1299 3Cr2W8V is commonly used for used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades.. IS 3748 T55Si7Mo3 is defined under Bureau of Indian Standards (IS), originating from India, while GB/T 1299 3Cr2W8V is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, IS 3748 T55Si7Mo3 vs GB/T 1299 3Cr2W8V is a 50.6% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 33.7%.

Frequently Compared With IS 3748 T55Si7Mo3:
IS 1570 (Part 6) 118T3 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 IS 3748 103T3 IS 1570 (Part 6) 133T3 GOST 5950 3H2W8F IS 3748 133T3 DIN EN ISO 4957 1.2379 IS 3748 118T3 GB/T 1299 4Cr5MoSiV IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
50.6%
MECHANICAL MATCH
0%
OVERALL
33.7%
Specifications
Property IS 3748 T55Si7Mo3 GB/T 1299 3Cr2W8V
Standard IS 3748:1990 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.50-0.60 0.30-0.40
Si (%) 1.50-2.00 0.20-0.40
Mn (%) 0.80-1.00 0.20-0.50
Mo (%) 0.25-0.40 Not specified
V (%) 0.12-0.20 0.20-0.50
S (%) <=0.035 0.030 max
P (%) <=0.035 0.030 max
Cr (%) Not specified 2.20-2.70
W (%) Not specified 7.50-9.00
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 T55Si7Mo3 GB/T 1299 3Cr2W8V
Hardness <=230 HB 48-54 HRC
Condition Annealed (maximum Brinell hardness) Not specified
Tensile Strength Not specified 1180-1380 MPa
Yield Strength Not specified 980-1180 MPa
Elongation Not specified 10-14%
Typical Applications
IS 3748 T55Si7Mo3
Cold work tools and dies for blanking, trimming, chipping and shearing
GB/T 1299 3Cr2W8V
Used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades.
Key Differences
Can IS 3748 T55Si7Mo3 Be Substituted With GB/T 1299 3Cr2W8V?
IS 3748 T55Si7Mo3 and GB/T 1299 3Cr2W8V 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 T55Si7Mo3
No active listings currently.
GB/T 1299 3Cr2W8V
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–2900 mm (110.24–114.17 in)
On M-EX Right Now
IS 3748 T55Si7Mo3
0 active listings and RFQs →
GB/T 1299 3Cr2W8V
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3748 T55Si7Mo3 and GB/T 1299 3Cr2W8V?
IS 3748 T55Si7Mo3 specifies Mo which is not specified for GB/T 1299 3Cr2W8V. GB/T 1299 3Cr2W8V specifies Cr, W which are not specified for IS 3748 T55Si7Mo3.
Can IS 3748 T55Si7Mo3 be substituted with GB/T 1299 3Cr2W8V?
IS 3748 T55Si7Mo3 and GB/T 1299 3Cr2W8V 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.