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IS 1570 (Part 4) 105Cr5 vs BS 970 (Part 1) 535A99

Close Alternative — 84.3% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 105Cr5 (IS 1570 (Part 4):1988) and BS 970 (Part 1) 535A99 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 105Cr5 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 535A99 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 4) 105Cr5 vs BS 970 (Part 1) 535A99 is a 84.3% 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 84.3%.

Frequently Compared With IS 1570 (Part 4) 105Cr5:
NF A35-565 100C6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr4Mo5H
Match Breakdown
CHEMISTRY MATCH
84.3%
MECHANICAL MATCH
No shared data
OVERALL
84.3%
Specifications
Property IS 1570 (Part 4) 105Cr5 BS 970 (Part 1) 535A99
Standard IS 1570 (Part 4):1988 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.90-1.20 0.95-1.10
Si (%) 0.10-0.35 Not specified
Mn (%) 0.40-0.80 0.40-0.70
Cr (%) 1.00-1.60 1.20-1.60
P (%) Not specified <=0.035
S (%) Not specified <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
IS 1570 (Part 4) 105Cr5
Not documented
BS 970 (Part 1) 535A99
Used for aircraft fittings, gears, high-strength shafts, crankshafts, heavy-duty fasteners, and transmission parts.
Key Differences
Can IS 1570 (Part 4) 105Cr5 Be Substituted With BS 970 (Part 1) 535A99?
IS 1570 (Part 4) 105Cr5 and BS 970 (Part 1) 535A99 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
IS 1570 (Part 4) 105Cr5
No active listings currently.
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)
On M-EX Right Now
IS 1570 (Part 4) 105Cr5
0 active listings and RFQs →
BS 970 (Part 1) 535A99
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 105Cr5 and BS 970 (Part 1) 535A99?
IS 1570 (Part 4) 105Cr5 specifies Si which is not specified for BS 970 (Part 1) 535A99. BS 970 (Part 1) 535A99 specifies P, S which are not specified for IS 1570 (Part 4) 105Cr5.
Can IS 1570 (Part 4) 105Cr5 be substituted with BS 970 (Part 1) 535A99?
IS 1570 (Part 4) 105Cr5 and BS 970 (Part 1) 535A99 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.