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IS 11169 (Part 1) 34Cr4 vs BS 970 (Part 3) 530M40

Strong Match — 85% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 34Cr4 (IS 11169 (Part 1):2022) and BS 970 (Part 3) 530M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 34Cr4 is typically used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c), while BS 970 (Part 3) 530M40 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16). IS 11169 (Part 1) 34Cr4 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 11169 (Part 1) 34Cr4 vs BS 970 (Part 3) 530M40 is a 85% 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 85%.

Frequently Compared With IS 11169 (Part 1) 34Cr4:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
85%
MECHANICAL MATCH
No shared data
OVERALL
85%
Specifications
Property IS 11169 (Part 1) 34Cr4 BS 970 (Part 3) 530M40
Standard IS 11169 (Part 1):2022 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.30-0.37 0.36-0.44
Cr (%) 0.90-1.20 0.90-1.20
Cu (%) <=0.25 Not specified
Mn (%) 0.60-0.90 0.60-0.90
P (%) <=0.025 <=0.035
S (%) <=0.025 <=0.040
Si (%) <=0.30 0.10-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 11169 (Part 1) 34Cr4 BS 970 (Part 3) 530M40
Core Hardness (CH) >=46 HRC up to 14 mm Not specified
Tensile Strength, annealed (+AC) <=580 MPa (over 5 to 40 mm) Not specified
Typical Applications
IS 11169 (Part 1) 34Cr4
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
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 11169 (Part 1) 34Cr4 Be Substituted With BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 34Cr4 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 11169 (Part 1) 34Cr4 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 11169 (Part 1) 34Cr4
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BS 970 (Part 3) 530M40
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 34Cr4 and BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 34Cr4 specifies Cu which is not specified for BS 970 (Part 3) 530M40.
Can IS 11169 (Part 1) 34Cr4 be substituted with BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 34Cr4 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 11169 (Part 1) 34Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.