Post Stock Login Register

BS 970 (Part 1) 135M44 vs IS 1570 (Part 2/Sec 1) 45C8

Strong Match — 92.6% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 135M44 (BS 970 (Part 1):1983) and IS 1570 (Part 2/Sec 1) 45C8 (IS 1570 (Part 2/Sec 1):1979) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 135M44 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while IS 1570 (Part 2/Sec 1) 45C8 is commonly used for billets and bars for forgings, carbon steel forgings, cold rolled strip for springs, flame and induction hardened parts, shipbuilding forgings and hardened and tempered parts (the standard links this grade to is 1875, is 2004, is 2507, is 3930, is 3261, is 5517). BS 970 (Part 1) 135M44 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 2/Sec 1) 45C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 135M44 vs IS 1570 (Part 2/Sec 1) 45C8 is a 92.6% 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 92.6%.

Frequently Compared With BS 970 (Part 1) 135M44:
BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A40 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A45
Match Breakdown
CHEMISTRY MATCH
92.6%
MECHANICAL MATCH
No shared data
OVERALL
92.6%
Specifications
Property BS 970 (Part 1) 135M44 IS 1570 (Part 2/Sec 1) 45C8
Standard BS 970 (Part 1):1983 IS 1570 (Part 2/Sec 1):1979
Category Carbon Steel Carbon Steel
C (%) 0.40-0.48 0.40-0.50
Mn (%) 1.20-1.50 0.60-0.90
P (%) <=0.050 Not specified
S (%) <=0.050 Not specified
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) 135M44 IS 1570 (Part 2/Sec 1) 45C8
Tensile Strength Not specified 630-710 MPa
Elongation Not specified >=15%
Typical Applications
BS 970 (Part 1) 135M44
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
IS 1570 (Part 2/Sec 1) 45C8
Billets and bars for forgings, carbon steel forgings, cold rolled strip for springs, flame and induction hardened parts, shipbuilding forgings and hardened and tempered parts (the standard links this grade to IS 1875, IS 2004, IS 2507, IS 3930, IS 3261, IS 5517)
Key Differences
Can BS 970 (Part 1) 135M44 Be Substituted With IS 1570 (Part 2/Sec 1) 45C8?
BS 970 (Part 1) 135M44 and IS 1570 (Part 2/Sec 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 45C8 is often considered as a substitute for BS 970 (Part 1) 135M44 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
BS 970 (Part 1) 135M44
0 active listings and RFQs →
IS 1570 (Part 2/Sec 1) 45C8
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 135M44 and IS 1570 (Part 2/Sec 1) 45C8?
BS 970 (Part 1) 135M44 specifies P, S which are not specified for IS 1570 (Part 2/Sec 1) 45C8.
Can BS 970 (Part 1) 135M44 be substituted with IS 1570 (Part 2/Sec 1) 45C8?
BS 970 (Part 1) 135M44 and IS 1570 (Part 2/Sec 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 45C8 is often considered as a substitute for BS 970 (Part 1) 135M44 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.