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IS 11169 (Part 1) 45C8 vs BS 970 (Part 3) 070M55

Strong Match — 89% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 45C8 (IS 11169 (Part 1):1984) and BS 970 (Part 3) 070M55 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Carbon Steel category. IS 11169 (Part 1) 45C8 is typically used for cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1), while BS 970 (Part 3) 070M55 is commonly used for used for springs, blades, wear plates, hand tools, shafts, and cutting components.. IS 11169 (Part 1) 45C8 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 070M55 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 45C8 vs BS 970 (Part 3) 070M55 is a 89% 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 89%.

Frequently Compared With IS 11169 (Part 1) 45C8:
BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
89%
MECHANICAL MATCH
No shared data
OVERALL
89%
Specifications
Property IS 11169 (Part 1) 45C8 BS 970 (Part 3) 070M55
Standard IS 11169 (Part 1):1984 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.40-0.50 0.50-0.60
Mn (%) 0.60-0.90 0.50-0.90
Si (%) 0.10-0.35 0.10-0.40
P (%) Not specified <=0.05
S (%) Not specified <=0.05
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) 45C8 BS 970 (Part 3) 070M55
Tensile Strength (hardened and tempered) 700-850 MPa (16 mm) / 660-810 MPa (40 mm) / 620-770 MPa (100 mm) Not specified
0.2% Proof Stress >=460 MPa (16 mm) / >=410 MPa (40 mm) / >=375 MPa (100 mm) Not specified
Elongation >=14% (16 mm) / >=16% (40 mm) / >=17% (100 mm) Not specified
Hardness, annealed <=170 HB Not specified
Typical Applications
IS 11169 (Part 1) 45C8
Cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
BS 970 (Part 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
Key Differences
Can IS 11169 (Part 1) 45C8 Be Substituted With BS 970 (Part 3) 070M55?
IS 11169 (Part 1) 45C8 and BS 970 (Part 3) 070M55 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 070M55 is often considered as a substitute for IS 11169 (Part 1) 45C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
IS 11169 (Part 1) 45C8
No active listings currently.
BS 970 (Part 3) 070M55
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4800–5800 mm (188.98–228.35 in)
On M-EX Right Now
IS 11169 (Part 1) 45C8
0 active listings and RFQs →
BS 970 (Part 3) 070M55
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 45C8 and BS 970 (Part 3) 070M55?
BS 970 (Part 3) 070M55 specifies P, S which are not specified for IS 11169 (Part 1) 45C8.
Can IS 11169 (Part 1) 45C8 be substituted with BS 970 (Part 3) 070M55?
IS 11169 (Part 1) 45C8 and BS 970 (Part 3) 070M55 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 070M55 is often considered as a substitute for IS 11169 (Part 1) 45C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.