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BS 4659 BPO2 vs IS 1570 (Part 4) 15Ni7Cr4Mo2

Related Material — 65% match based on chemical composition and mechanical property overlap.

BS 4659 BPO2 (BS 4659:1989) and IS 1570 (Part 4) 15Ni7Cr4Mo2 (IS 1570 (Part 4):1988) are both steel grades. BS 4659 BPO2 is classified under Tool & Die Steels, while IS 1570 (Part 4) 15Ni7Cr4Mo2 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. BS 4659 BPO2 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 15Ni7Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 4659 BPO2 vs IS 1570 (Part 4) 15Ni7Cr4Mo2 is a 66.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With BS 4659 BPO2:
GOST 5950 3H2W8F EN ISO 4957 1.2316 EN ISO 683-17 100Cr6 GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV1 AISI 52100 GOST 5950 4H5MFS DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV GB/T 1299 3Cr2W8V
Other Tool & Die Steels Grades to Compare With BS 4659 BPO2:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
66.2%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property BS 4659 BPO2 IS 1570 (Part 4) 15Ni7Cr4Mo2
Standard BS 4659:1989 IS 1570 (Part 4):1988
Category Tool & Die Steels Alloy Steel
C (%) 0.07–0.12 0.12-0.18
Mn (%) 0.10–0.40 0.60-1.00
Cr (%) 0.75–1.25 0.75-1.25
Mo (%) 0.15–0.40 0.10-0.20
Ni (%) 0.10–0.50 1.50-2.00
Si (%) Not specified 0.15-0.35
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 BPO2 IS 1570 (Part 4) 15Ni7Cr4Mo2
Hardness HRC (case hardened) 58–64 Not specified
Hardness HRC (core) 20–30 Not specified
Tensile Strength Not specified >=1080 MPa
Elongation Not specified >=9%
Izod Impact Not specified >=35 J
Condition Not specified Case hardening steel, refined and quenched, core properties
Typical Applications
BS 4659 BPO2
Injection mould cavities, zinc die casting dies
IS 1570 (Part 4) 15Ni7Cr4Mo2
Not documented
Key Differences
Can BS 4659 BPO2 Be Substituted With IS 1570 (Part 4) 15Ni7Cr4Mo2?
BS 4659 BPO2 and IS 1570 (Part 4) 15Ni7Cr4Mo2 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
BS 4659 BPO2
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–2900 mm (106.3–114.17 in)
IS 1570 (Part 4) 15Ni7Cr4Mo2
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On M-EX Right Now
BS 4659 BPO2
2 active listings and RFQs →
IS 1570 (Part 4) 15Ni7Cr4Mo2
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Frequently Asked Questions
What is the difference between BS 4659 BPO2 and IS 1570 (Part 4) 15Ni7Cr4Mo2?
Different category: BS 4659 BPO2 is Tool & Die Steels, IS 1570 (Part 4) 15Ni7Cr4Mo2 is Alloy Steel. IS 1570 (Part 4) 15Ni7Cr4Mo2 specifies Si which is not specified for BS 4659 BPO2.
Can BS 4659 BPO2 be substituted with IS 1570 (Part 4) 15Ni7Cr4Mo2?
BS 4659 BPO2 and IS 1570 (Part 4) 15Ni7Cr4Mo2 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.