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BS 970 EN9K vs IS 1570 (Part 2/Sec 1) 55C4

Strong Match — 89.7% match based on chemical composition and mechanical property overlap.

BS 970 EN9K (BS 970:1955) and IS 1570 (Part 2/Sec 1) 55C4 (IS 1570 (Part 2/Sec 1):1979) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN9K is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 2/Sec 1) 55C4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN9K vs IS 1570 (Part 2/Sec 1) 55C4 is a 89.7% 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 89.7%.

Frequently Compared With BS 970 EN9K:
BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
89.7%
MECHANICAL MATCH
No shared data
OVERALL
89.7%
Specifications
Property BS 970 EN9K IS 1570 (Part 2/Sec 1) 55C4
Standard BS 970:1955 IS 1570 (Part 2/Sec 1):1979
Category Carbon Steel Carbon Steel
C (%) 0.50-0.60 0.50-0.60
Si (%) 0.05-0.35 Not specified
Mn (%) 0.50-0.80 0.30-0.60
S (%) <=0.050 Not specified
P (%) <=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 EN9K IS 1570 (Part 2/Sec 1) 55C4
Tensile Strength ≥695 MPa (45 tons/sq in, converted) Not specified
Yield Strength ≥355 MPa (23 tons/sq in, converted) Not specified
Elongation ≥18% Not specified
Hardness 201-255 HB Not specified
Condition Normalised, ruling section 4 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN9K
Not documented
IS 1570 (Part 2/Sec 1) 55C4
springs, knives, hand tools, agricultural tools, wear-resistant parts
Key Differences
Can BS 970 EN9K Be Substituted With IS 1570 (Part 2/Sec 1) 55C4?
BS 970 EN9K and IS 1570 (Part 2/Sec 1) 55C4 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 55C4 is often considered as a substitute for BS 970 EN9K 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
BS 970 EN9K
No active listings currently.
IS 1570 (Part 2/Sec 1) 55C4
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5300–6600 mm (208.66–259.84 in)
On M-EX Right Now
BS 970 EN9K
0 active listings and RFQs →
IS 1570 (Part 2/Sec 1) 55C4
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN9K and IS 1570 (Part 2/Sec 1) 55C4?
BS 970 EN9K specifies Si, S, P which are not specified for IS 1570 (Part 2/Sec 1) 55C4.
Can BS 970 EN9K be substituted with IS 1570 (Part 2/Sec 1) 55C4?
BS 970 EN9K and IS 1570 (Part 2/Sec 1) 55C4 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 55C4 is often considered as a substitute for BS 970 EN9K in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.