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BS 4659 BD2 vs GB/T 1299 4Cr5MoSiV

Minimal Match — 43.4% match based on chemical composition and mechanical property overlap.

BS 4659 BD2 (BS 4659:1989) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. BS 4659 BD2 is typically used for blanking dies, forming dies, thread rolling dies, while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. BS 4659 BD2 is defined under British Standards (BS), originating from United Kingdom, while GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, BS 4659 BD2 vs GB/T 1299 4Cr5MoSiV is a 65.1% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 43.4%.

Frequently Compared With BS 4659 BD2:
GB/T 1299 3Cr2W8V EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 AISI 52100 GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS EN ISO 683-17 100Cr6 DIN EN ISO 4957 1.2344 GOST 5950 3H2W8F IS 1570 (Part 6) 133T3 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 118T3
Match Breakdown
CHEMISTRY MATCH
65.1%
MECHANICAL MATCH
0%
OVERALL
43.4%
Specifications
Property BS 4659 BD2 GB/T 1299 4Cr5MoSiV
Standard BS 4659:1989 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 1.40–1.60 0.32–0.45
Mn (%) 0.20–0.60 0.20–0.50
Cr (%) 11.00–13.00 4.75–5.50
Mo (%) 0.70–1.20 1.10–1.60
V (%) 0.50–1.10 0.30–0.60
Si (%) 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 BS 4659 BD2 GB/T 1299 4Cr5MoSiV
Hardness HRC (hardened) 58–62 40–54
Hardness HB (annealed) ≤255 ≤235
Typical Applications
BS 4659 BD2
Blanking dies, forming dies, thread rolling dies
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can BS 4659 BD2 Be Substituted With GB/T 1299 4Cr5MoSiV?
BS 4659 BD2 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
BS 4659 BD2
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–3000 mm (106.3–118.11 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
BS 4659 BD2
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 4659 BD2 and GB/T 1299 4Cr5MoSiV?
GB/T 1299 4Cr5MoSiV specifies Si which is not specified for BS 4659 BD2.
Can BS 4659 BD2 be substituted with GB/T 1299 4Cr5MoSiV?
BS 4659 BD2 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.