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BS 4659 BH21 vs IS 1570 (Part 6) XT33W9Cr3V4

Close Alternative — 79.3% match based on chemical composition and mechanical property overlap.

BS 4659 BH21 (BS 4659:1989) and IS 1570 (Part 6) XT33W9Cr3V4 (IS 1570 (Part 6):1996) are both steel grades. Both fall under the Tool & Die Steels category. BS 4659 BH21 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 6) XT33W9Cr3V4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 4659 BH21 vs IS 1570 (Part 6) XT33W9Cr3V4 is a 79.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 79.3%.

Frequently Compared With BS 4659 BH21:
GB/T 1299 3Cr2W8V GOST 5950 4H5MFS1 EN ISO 4957 1.2316 GOST 5950 3H2W8F GOST 5950 4H5MFS AISI 52100 EN ISO 683-17 100Cr6 DIN EN ISO 4957 1.2379 DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV1 GB/T 1299 4Cr5MoSiV IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
79.3%
MECHANICAL MATCH
No shared data
OVERALL
79.3%
Specifications
Property BS 4659 BH21 IS 1570 (Part 6) XT33W9Cr3V4
Standard BS 4659:1989 IS 1570 (Part 6):1996
Category Tool & Die Steels Tool & Die Steels
C (%) 0.26–0.36 0.25-0.40
Mn (%) 0.15–0.40 0.20-0.40
Cr (%) 3.00–3.75 2.80-3.30
W (%) 8.50–10.00 8.0-10.0
V (%) 0.30–0.60 0.25-0.50
Si (%) Not specified 0.10-0.35
P (%) Not specified <=0.035
S (%) Not specified <=0.035
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 BH21 IS 1570 (Part 6) XT33W9Cr3V4
Hardness HRC (hardened) 36–54 Not specified
Hardness HB (annealed) ≤229 Not specified
Typical Applications
BS 4659 BH21
Hot extrusion dies, brass/bronze forging dies
IS 1570 (Part 6) XT33W9Cr3V4
Not documented
Key Differences
Can BS 4659 BH21 Be Substituted With IS 1570 (Part 6) XT33W9Cr3V4?
BS 4659 BH21 and IS 1570 (Part 6) XT33W9Cr3V4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
BS 4659 BH21
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 4400–4600 mm (173.23–181.1 in)
IS 1570 (Part 6) XT33W9Cr3V4
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On M-EX Right Now
BS 4659 BH21
2 active listings and RFQs →
IS 1570 (Part 6) XT33W9Cr3V4
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 4659 BH21 and IS 1570 (Part 6) XT33W9Cr3V4?
IS 1570 (Part 6) XT33W9Cr3V4 specifies Si, P, S which are not specified for BS 4659 BH21.
Can BS 4659 BH21 be substituted with IS 1570 (Part 6) XT33W9Cr3V4?
BS 4659 BH21 and IS 1570 (Part 6) XT33W9Cr3V4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.