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BS 4659 BD2 vs EN ISO 4957 X155CrVMo12-1

Strong Match — 85.8% match based on chemical composition and mechanical property overlap.

BS 4659 BD2 (BS 4659:1989) and EN ISO 4957 X155CrVMo12-1 (EN ISO 4957:2018) 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 EN ISO 4957 X155CrVMo12-1 is commonly used for blanking dies, forming dies, thread rolling dies, gauges. BS 4659 BD2 is defined under British Standards (BS), originating from United Kingdom, while EN ISO 4957 X155CrVMo12-1 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 4659 BD2 vs EN ISO 4957 X155CrVMo12-1 is a 78.6% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 85.8%.

Frequently Compared With BS 4659 BD2:
GB/T 1299 3Cr2W8V EN ISO 4957 1.2316 GB/T 1299 4Cr5MoSiV 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
Match Breakdown
CHEMISTRY MATCH
78.6%
MECHANICAL MATCH
100%
OVERALL
85.8%
Specifications
Property BS 4659 BD2 EN ISO 4957 X155CrVMo12-1
Standard BS 4659:1989 EN ISO 4957:2018
Category Tool & Die Steels Tool & Die Steels
C (%) 1.40–1.60 1.55–1.65
Mn (%) 0.20–0.60 0.20–0.50
Cr (%) 11.00–13.00 11.50–12.50
Mo (%) 0.70–1.20 0.60–0.80
V (%) 0.50–1.10 0.70–1.00
Si (%) Not specified ≤0.40
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 EN ISO 4957 X155CrVMo12-1
Hardness HRC (hardened) 58–62 58–62
Hardness HB (annealed) ≤255 ≤255
Wear Resistance Not specified Excellent
Typical Applications
BS 4659 BD2
Blanking dies, forming dies, thread rolling dies
EN ISO 4957 X155CrVMo12-1
Blanking dies, forming dies, thread rolling dies, gauges
Key Differences
Can BS 4659 BD2 Be Substituted With EN ISO 4957 X155CrVMo12-1?
BS 4659 BD2 and EN ISO 4957 X155CrVMo12-1 overlap closely enough on chemistry and mechanical properties that EN ISO 4957 X155CrVMo12-1 is often considered as a substitute for BS 4659 BD2 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 BD2
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–3000 mm (106.3–118.11 in)
EN ISO 4957 X155CrVMo12-1
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3200 mm (98.43–125.98 in)
On M-EX Right Now
BS 4659 BD2
2 active listings and RFQs →
EN ISO 4957 X155CrVMo12-1
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 4659 BD2 and EN ISO 4957 X155CrVMo12-1?
EN ISO 4957 X155CrVMo12-1 specifies Si which is not specified for BS 4659 BD2.
Can BS 4659 BD2 be substituted with EN ISO 4957 X155CrVMo12-1?
BS 4659 BD2 and EN ISO 4957 X155CrVMo12-1 overlap closely enough on chemistry and mechanical properties that EN ISO 4957 X155CrVMo12-1 is often considered as a substitute for BS 4659 BD2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.