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IS 1570 (Part 4) 50Cr4 vs BS 970 (Part 3) 530M40

Strong Match — 89% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 50Cr4 (IS 1570 (Part 4):1988) and BS 970 (Part 3) 530M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 50Cr4 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 1570 (Part 4) 50Cr4 vs BS 970 (Part 3) 530M40 is a 89% 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 89%.

Frequently Compared With IS 1570 (Part 4) 50Cr4:
IS 1570 (Part 4) 105Cr5 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Mo6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
89%
MECHANICAL MATCH
No shared data
OVERALL
89%
Specifications
Property IS 1570 (Part 4) 50Cr4 BS 970 (Part 3) 530M40
Standard IS 1570 (Part 4):1988 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.45-0.55 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
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.
Mechanical Properties
Property IS 1570 (Part 4) 50Cr4 BS 970 (Part 3) 530M40
Tensile Strength >=1090 MPa Not specified
Yield Strength >=890 MPa Not specified
Condition Tubes, hardened and tempered Not specified
Typical Applications
IS 1570 (Part 4) 50Cr4
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)
Key Differences
Can IS 1570 (Part 4) 50Cr4 Be Substituted With BS 970 (Part 3) 530M40?
IS 1570 (Part 4) 50Cr4 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 1570 (Part 4) 50Cr4 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 1570 (Part 4) 50Cr4
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BS 970 (Part 3) 530M40
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 50Cr4 and BS 970 (Part 3) 530M40?
BS 970 (Part 3) 530M40 specifies P, S which are not specified for IS 1570 (Part 4) 50Cr4.
Can IS 1570 (Part 4) 50Cr4 be substituted with BS 970 (Part 3) 530M40?
IS 1570 (Part 4) 50Cr4 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 1570 (Part 4) 50Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.