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IS 11169 (Part 1) 38C8BT vs BS 970 (Part 3) 530M40

Close Alternative — 74.4% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 38C8BT (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) 38C8BT 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) 38C8BT 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) 38C8BT vs BS 970 (Part 3) 530M40 is a 74.4% 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 74.4%.

Frequently Compared With IS 11169 (Part 1) 38C8BT:
NF A35-565 100C6 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6
Match Breakdown
CHEMISTRY MATCH
74.4%
MECHANICAL MATCH
No shared data
OVERALL
74.4%
Specifications
Property IS 11169 (Part 1) 38C8BT BS 970 (Part 3) 530M40
Standard IS 11169 (Part 1):2022 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
B (%) 0.0008-0.005 Not specified
C (%) 0.35-0.40 0.36-0.44
Cr (%) <=0.30 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) 38C8BT BS 970 (Part 3) 530M40
Core Hardness (CH) >=48 HRC up to 11 mm Not specified
Tensile Strength, annealed (+AC) <=570 MPa (over 5 to 40 mm) Not specified
Typical Applications
IS 11169 (Part 1) 38C8BT
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) 38C8BT Be Substituted With BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 38C8BT and BS 970 (Part 3) 530M40 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.
On M-EX Right Now
IS 11169 (Part 1) 38C8BT
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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) 38C8BT and BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 38C8BT specifies B, Cu which are not specified for BS 970 (Part 3) 530M40.
Can IS 11169 (Part 1) 38C8BT be substituted with BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 38C8BT and BS 970 (Part 3) 530M40 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.