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BS 4659 BH11 vs GB/T 1299 4Cr5MoSiV

Strong Match — 98.8% match based on chemical composition and mechanical property overlap.

BS 4659 BH11 (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 BH11 is typically used for die casting dies, extrusion tooling, while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. BS 4659 BH11 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 BH11 vs GB/T 1299 4Cr5MoSiV is a 98.1% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 98.8%.

Frequently Compared With BS 4659 BH11:
GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F GB/T 1299 3Cr2W8V AISI 52100 EN ISO 683-17 100Cr6 IS 1570 (Part 6) 118T3 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
98.1%
MECHANICAL MATCH
100%
OVERALL
98.8%
Specifications
Property BS 4659 BH11 GB/T 1299 4Cr5MoSiV
Standard BS 4659:1989 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.33–0.43 0.32–0.45
Si (%) 0.80–1.20 0.80–1.20
Mn (%) 0.20–0.50 0.20–0.50
Cr (%) 4.75–5.50 4.75–5.50
Mo (%) 1.10–1.60 1.10–1.60
V (%) 0.30–0.60 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 BS 4659 BH11 GB/T 1299 4Cr5MoSiV
Hardness HRC (hardened) 40–54 40–54
Hardness HB (annealed) ≤235 ≤235
Typical Applications
BS 4659 BH11
Die casting dies, extrusion tooling
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Can BS 4659 BH11 Be Substituted With GB/T 1299 4Cr5MoSiV?
BS 4659 BH11 and GB/T 1299 4Cr5MoSiV overlap closely enough on chemistry and mechanical properties that GB/T 1299 4Cr5MoSiV is often considered as a substitute for BS 4659 BH11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 4659 BH11
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3500–3500 mm (137.8–137.8 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 BH11
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 4659 BH11 and GB/T 1299 4Cr5MoSiV?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 4659 BH11 be substituted with GB/T 1299 4Cr5MoSiV?
BS 4659 BH11 and GB/T 1299 4Cr5MoSiV overlap closely enough on chemistry and mechanical properties that GB/T 1299 4Cr5MoSiV is often considered as a substitute for BS 4659 BH11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.