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IS 5517 40Cr4 vs BS 970 (Part 3) 530M40

Strong Match — 97% match based on chemical composition and mechanical property overlap.

IS 5517 40Cr4 (IS 5517:1993) and BS 970 (Part 3) 530M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 5517 40Cr4 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 530M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 5517 40Cr4 vs BS 970 (Part 3) 530M40 is a 97% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 97%.

Frequently Compared With IS 5517 40Cr4:
IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
97%
MECHANICAL MATCH
No shared data
OVERALL
97%
Specifications
Property IS 5517 40Cr4 BS 970 (Part 3) 530M40
Standard IS 5517:1993 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.36-0.44
Si (%) 0.10-0.35 0.10-0.40
Mn (%) 0.60-0.90 0.60-0.90
Cr (%) 0.90-1.20 0.90-1.20
S (%) <=0.035 <=0.040
P (%) <=0.035 <=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 IS 5517 40Cr4 BS 970 (Part 3) 530M40
Tensile Strength 700-850 MPa Not specified
Yield Strength (0.2% proof) 540 MPa min Not specified
Elongation >=18% Not specified
Izod Impact 55 J min Not specified
Hardness (annealed) <=241 HB Not specified
Condition Hardened and tempered, ruling section up to 100 mm Not specified
Typical Applications
IS 5517 40Cr4
Not documented
BS 970 (Part 3) 530M40
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can IS 5517 40Cr4 Be Substituted With BS 970 (Part 3) 530M40?
IS 5517 40Cr4 and BS 970 (Part 3) 530M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 530M40 is often considered as a substitute for IS 5517 40Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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IS 5517 40Cr4
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BS 970 (Part 3) 530M40
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Frequently Asked Questions
What is the difference between IS 5517 40Cr4 and BS 970 (Part 3) 530M40?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 5517 40Cr4 be substituted with BS 970 (Part 3) 530M40?
IS 5517 40Cr4 and BS 970 (Part 3) 530M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 530M40 is often considered as a substitute for IS 5517 40Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.