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ASTM A681 D4 vs BS 4659 BD2

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A681 D4 (ASTM A681:2008) and BS 4659 BD2 (BS 4659:1989) are both steel grades. Both fall under the Tool & Die Steels category. ASTM A681 D4 is typically used for tools, dies and fixtures (clause 1.2), while BS 4659 BD2 is commonly used for blanking dies, forming dies, thread rolling dies. ASTM A681 D4 is defined under ASTM International, originating from United States, while BS 4659 BD2 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A681 D4 vs BS 4659 BD2 is a 80.7% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With ASTM A681 D4:
GB/T 1299 3Cr2W8V EN ISO 4957 1.2316 EN ISO 683-17 100Cr6 GOST 5950 3H2W8F GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 118T3 IS 1570 (Part 6) 133T3 GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS1 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
80.7%
MECHANICAL MATCH
100%
OVERALL
69.9%
Specifications
Property ASTM A681 D4 BS 4659 BD2
Standard ASTM A681:2008 BS 4659:1989
Category Tool & Die Steels Tool & Die Steels
C (%) 2.05-2.40 1.40–1.60
Mn (%) 0.10-0.60 0.20–0.60
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Si (%) 0.10-0.60 Not specified
Cr (%) 11.00-13.00 11.00–13.00
V (%) 0.15-1.00 0.50–1.10
Mo (%) 0.70-1.20 0.70–1.20
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A681 D4 BS 4659 BD2
Hardness <=255 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Hardness HRC (hardened) Not specified 58–62
Hardness HB (annealed) Not specified ≤255
Typical Applications
ASTM A681 D4
Tools, dies and fixtures (clause 1.2)
BS 4659 BD2
Blanking dies, forming dies, thread rolling dies
Key Differences
Can ASTM A681 D4 Be Substituted With BS 4659 BD2?
ASTM A681 D4 and BS 4659 BD2 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
ASTM A681 D4
No active listings currently.
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)
On M-EX Right Now
ASTM A681 D4
0 active listings and RFQs →
BS 4659 BD2
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A681 D4 and BS 4659 BD2?
ASTM A681 D4 specifies P, S, Si which are not specified for BS 4659 BD2.
Can ASTM A681 D4 be substituted with BS 4659 BD2?
ASTM A681 D4 and BS 4659 BD2 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.