Post Stock Login Register

GB/T 18254 GCr15 vs GB/T 1299 4Cr5MoSiV

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

GB/T 18254 GCr15 (GB/T 18254-2016) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) 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 GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. GB/T 18254 GCr15 is defined under Guobiao Standards (GB/T), originating from China, while GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 18254 GCr15 vs GB/T 1299 4Cr5MoSiV is a 63.1% 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 EN ISO 4957 1.2316 GOST 5950 3H2W8F GOST 5950 4H5MFS DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV1
Other Tool & Die Steels Grades to Compare With GB/T 18254 GCr15:
IS 3748 103T3 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
63.1%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 18254 GCr15 GB/T 1299 4Cr5MoSiV
Standard GB/T 18254-2016 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.95–1.05 0.32–0.45
Si (%) 0.15–0.35 0.80–1.20
Mn (%) 0.25–0.45 0.20–0.50
Cr (%) 1.40–1.65 4.75–5.50
S (%) ≤0.020 Not specified
P (%) ≤0.025 Not specified
Mo (%) Not specified 1.10–1.60
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 GB/T 18254 GCr15 GB/T 1299 4Cr5MoSiV
Hardness HRC (hardened) 60–66 40–54
Hardness HB (annealed) ≤179–207 ≤235
Typical Applications
GB/T 18254 GCr15
Ball bearings, roller bearings, bearing races
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can GB/T 18254 GCr15 Be Substituted With GB/T 1299 4Cr5MoSiV?
GB/T 18254 GCr15 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
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)
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
GB/T 18254 GCr15
23 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 18254 GCr15 and GB/T 1299 4Cr5MoSiV?
GB/T 18254 GCr15 specifies S, P which are not specified for GB/T 1299 4Cr5MoSiV. GB/T 1299 4Cr5MoSiV specifies Mo, V which are not specified for GB/T 18254 GCr15.
Can GB/T 18254 GCr15 be substituted with GB/T 1299 4Cr5MoSiV?
GB/T 18254 GCr15 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.