Post Stock Login Register

GB/T 18254 GCr15 vs IS 3748 103T3

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

GB/T 18254 GCr15 (GB/T 18254-2016) and IS 3748 103T3 (IS 3748:1990) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 18254 GCr15 is typically used for ball bearings, roller bearings, bearing races, while IS 3748 103T3 is commonly used for cold work tools and dies for blanking, trimming, chipping and shearing. GB/T 18254 GCr15 is defined under Guobiao Standards (GB/T), originating from China, while IS 3748 103T3 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 18254 GCr15 vs IS 3748 103T3 is a 81.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 18254 GCr15:
EN ISO 683-17 100Cr6 AISI 52100 GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 GOST 5950 4H5MFS GOST 5950 3H2W8F DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV1 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
81.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 18254 GCr15 IS 3748 103T3
Standard GB/T 18254-2016 IS 3748:1990
Category Tool & Die Steels Tool & Die Steels
C (%) 0.95–1.05 0.95-1.10
Si (%) 0.15–0.35 0.10-0.30
Mn (%) 0.25–0.45 <=0.40
Cr (%) 1.40–1.65 Not specified
S (%) ≤0.020 <=0.035
P (%) ≤0.025 <=0.035
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 18254 GCr15 IS 3748 103T3
Hardness HRC (hardened) 60–66 Not specified
Hardness HB (annealed) ≤179–207 Not specified
Hardness Not specified <=220 HB
Condition Not specified Annealed (maximum Brinell hardness)
Typical Applications
GB/T 18254 GCr15
Ball bearings, roller bearings, bearing races
IS 3748 103T3
Cold work tools and dies for blanking, trimming, chipping and shearing
Key Differences
Can GB/T 18254 GCr15 Be Substituted With IS 3748 103T3?
GB/T 18254 GCr15 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.
Forms & Sizes Available on M-EX
GB/T 18254 GCr15
Round Bar → (23 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–6600 mm (106.3–259.84 in)
IS 3748 103T3
No active listings currently.
On M-EX Right Now
GB/T 18254 GCr15
23 active listings and RFQs →
IS 3748 103T3
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 18254 GCr15 and IS 3748 103T3?
GB/T 18254 GCr15 specifies Cr which is not specified for IS 3748 103T3.
Can GB/T 18254 GCr15 be substituted with IS 3748 103T3?
GB/T 18254 GCr15 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.