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BS 4659 BH11 vs ASTM A681 H11

Strong Match — 97.3% match based on chemical composition and mechanical property overlap.

BS 4659 BH11 (BS 4659:1989) and ASTM A681 H11 (ASTM A681:2008) 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 ASTM A681 H11 is commonly used for die casting dies, extrusion tooling, forging dies. BS 4659 BH11 is defined under British Standards (BS), originating from United Kingdom, while ASTM A681 H11 is defined under ASTM International, originating from United States.

As per chemical composition, BS 4659 BH11 vs ASTM A681 H11 is a 95.9% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 97.3%.

Frequently Compared With BS 4659 BH11:
GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV 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
Match Breakdown
CHEMISTRY MATCH
95.9%
MECHANICAL MATCH
100%
OVERALL
97.3%
Specifications
Property BS 4659 BH11 ASTM A681 H11
Standard BS 4659:1989 ASTM A681:2008
Category Tool & Die Steels Tool & Die Steels
C (%) 0.33–0.43 0.33-0.43
Si (%) 0.80–1.20 0.80-1.25
Mn (%) 0.20–0.50 0.20-0.60
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
P (%) Not specified <=0.030
S (%) Not specified <=0.030
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 ASTM A681 H11
Hardness HRC (hardened) 40–54 Not specified
Hardness HB (annealed) ≤235 Not specified
Hardness Not specified <=235 HB
Condition Not specified Annealed (maximum Brinell hardness)
Typical Applications
BS 4659 BH11
Die casting dies, extrusion tooling
ASTM A681 H11
Die casting dies, extrusion tooling, forging dies
Key Differences
Can BS 4659 BH11 Be Substituted With ASTM A681 H11?
BS 4659 BH11 and ASTM A681 H11 overlap closely enough on chemistry and mechanical properties that ASTM A681 H11 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)
ASTM A681 H11
Flat Bar → (3 listings)
Thickness: 40–40 mm (1.57–1.57 in)
Width: 180–180 mm (7.09–7.09 in)
Length: 2500–4000 mm (98.43–157.48 in)
On M-EX Right Now
BS 4659 BH11
2 active listings and RFQs →
ASTM A681 H11
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 4659 BH11 and ASTM A681 H11?
ASTM A681 H11 specifies P, S which are not specified for BS 4659 BH11.
Can BS 4659 BH11 be substituted with ASTM A681 H11?
BS 4659 BH11 and ASTM A681 H11 overlap closely enough on chemistry and mechanical properties that ASTM A681 H11 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.