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BS 970 (Part 1) 535A99 vs IS 4367 10Cr9Mo10

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 535A99 (BS 970 (Part 1):1983) and IS 4367 10Cr9Mo10 (IS 4367:1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 535A99 is defined under British Standards (BS), originating from United Kingdom, while IS 4367 10Cr9Mo10 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 535A99 vs IS 4367 10Cr9Mo10 is a 61.6% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 1) 535A99:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
61.6%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 (Part 1) 535A99 IS 4367 10Cr9Mo10
Standard BS 970 (Part 1):1983 IS 4367:1991
Category Alloy Steel Alloy Steel
C (%) 0.95-1.10 <=0.15
Mn (%) 0.40-0.70 0.40-0.70
P (%) <=0.035 <=0.035
S (%) <=0.040 <=0.035
Cr (%) 1.20-1.60 2.00-2.50
Si (%) Not specified <=0.50
Ni (%) Not specified <=0.30
Mo (%) Not specified 0.90-1.10
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 535A99 IS 4367 10Cr9Mo10
Tensile Strength Not specified 410-590 MPa
Yield Strength Not specified 245 MPa min
Elongation Not specified >=18%
Izod Impact Not specified 55 J min
Hardness (soft annealed) Not specified <=187 HB
Condition Not specified Normalised and tempered, ruling section up to 50 mm
Typical Applications
BS 970 (Part 1) 535A99
Used for aircraft fittings, gears, high-strength shafts, crankshafts, heavy-duty fasteners, and transmission parts.
IS 4367 10Cr9Mo10
Not documented
Key Differences
Can BS 970 (Part 1) 535A99 Be Substituted With IS 4367 10Cr9Mo10?
BS 970 (Part 1) 535A99 and IS 4367 10Cr9Mo10 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 970 (Part 1) 535A99
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5200–6400 mm (204.72–251.97 in)
IS 4367 10Cr9Mo10
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On M-EX Right Now
BS 970 (Part 1) 535A99
2 active listings and RFQs →
IS 4367 10Cr9Mo10
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 535A99 and IS 4367 10Cr9Mo10?
IS 4367 10Cr9Mo10 specifies Si, Ni, Mo which are not specified for BS 970 (Part 1) 535A99.
Can BS 970 (Part 1) 535A99 be substituted with IS 4367 10Cr9Mo10?
BS 970 (Part 1) 535A99 and IS 4367 10Cr9Mo10 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.