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BS 970 (Part 1) 226M44 vs IS 1570 (Part 3) 40C15S12

Strong Match — 88.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 226M44 (BS 970 (Part 1):1983) and IS 1570 (Part 3) 40C15S12 (IS 1570 (Part 3):1979) are both steel grades. Both fall under the Free Machining Steel category. BS 970 (Part 1) 226M44 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 3) 40C15S12 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 226M44 vs IS 1570 (Part 3) 40C15S12 is a 88.2% 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 88.2%.

Frequently Compared With BS 970 (Part 1) 226M44:
SAE J403 1144 SAE J403 1144 SAE J403 1144 SAE J403 1117 SAE J403 1118 IS 1570 (Part 3) 10C8S10 IS 4432 10C8S10 SAE J403 1117 SAE J403 1117 SAE J403 1118 SAE J403 1118 SAE J403 1126
Match Breakdown
CHEMISTRY MATCH
88.2%
MECHANICAL MATCH
No shared data
OVERALL
88.2%
Specifications
Property BS 970 (Part 1) 226M44 IS 1570 (Part 3) 40C15S12
Standard BS 970 (Part 1):1983 IS 1570 (Part 3):1979
Category Free Machining Steel Free Machining Steel
C (%) 0.40-0.48 0.35-0.45
Mn (%) 1.30-1.70 1.30-1.70
Si (%) <=0.25 <=0.25
P (%) <=0.060 <=0.060
S (%) 0.22-0.30 0.08-0.15
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 226M44 IS 1570 (Part 3) 40C15S12
Tensile Strength Not specified 600-700 MPa
Elongation Not specified >=15%
Condition Not specified Hot rolled or normalized bars, billets and forgings (Table 2), ruling sections up to 150 mm
Typical Applications
BS 970 (Part 1) 226M44
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
IS 1570 (Part 3) 40C15S12
Not documented
Can BS 970 (Part 1) 226M44 Be Substituted With IS 1570 (Part 3) 40C15S12?
BS 970 (Part 1) 226M44 and IS 1570 (Part 3) 40C15S12 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 3) 40C15S12 is often considered as a substitute for BS 970 (Part 1) 226M44 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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BS 970 (Part 1) 226M44
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IS 1570 (Part 3) 40C15S12
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 226M44 and IS 1570 (Part 3) 40C15S12?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 226M44 be substituted with IS 1570 (Part 3) 40C15S12?
BS 970 (Part 1) 226M44 and IS 1570 (Part 3) 40C15S12 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 3) 40C15S12 is often considered as a substitute for BS 970 (Part 1) 226M44 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.