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IS 11169 (Part 1) 23C8BT vs BS 970 (Part 3) 530M40

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 23C8BT (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) 23C8BT 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) 23C8BT 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) 23C8BT vs BS 970 (Part 3) 530M40 is a 70.6% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With IS 11169 (Part 1) 23C8BT:
UNI 11234 100Cr6 IS 11169 (Part 1) 10Ni5Cr4 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
70.6%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property IS 11169 (Part 1) 23C8BT 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 (%) 0.20-0.25 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) 23C8BT BS 970 (Part 3) 530M40
Core Hardness (CH) >=40 HRC up to 9 mm Not specified
Tensile Strength, annealed (+AC) <=490 MPa (over 5 to 25 mm) Not specified
Typical Applications
IS 11169 (Part 1) 23C8BT
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) 23C8BT Be Substituted With BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 23C8BT and BS 970 (Part 3) 530M40 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
On M-EX Right Now
IS 11169 (Part 1) 23C8BT
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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) 23C8BT and BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 23C8BT specifies B, Cu which are not specified for BS 970 (Part 3) 530M40.
Can IS 11169 (Part 1) 23C8BT be substituted with BS 970 (Part 3) 530M40?
IS 11169 (Part 1) 23C8BT and BS 970 (Part 3) 530M40 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.