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BS 970 (Part 3) 070M55 vs IS 1875 Class 5

Strong Match — 95.5% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 070M55 (BS 970 (Part 3):1991) and IS 1875 Class 5 (IS 1875:1992) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 3) 070M55 is typically used for used for springs, blades, wear plates, hand tools, shafts, and cutting components., while IS 1875 Class 5 is commonly used for billets, blooms, slabs and bars for general engineering forgings. BS 970 (Part 3) 070M55 is defined under British Standards (BS), originating from United Kingdom, while IS 1875 Class 5 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 3) 070M55 vs IS 1875 Class 5 is a 95.5% 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 95.5%.

Frequently Compared With BS 970 (Part 3) 070M55:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 055M15 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
95.5%
MECHANICAL MATCH
No shared data
OVERALL
95.5%
Specifications
Property BS 970 (Part 3) 070M55 IS 1875 Class 5
Standard BS 970 (Part 3):1991 IS 1875:1992
Category Carbon Steel Carbon Steel
C (%) 0.50-0.60 0.50-0.60
Si (%) 0.10-0.40 0.15-0.35
Mn (%) 0.50-0.90 0.60-0.90
P (%) <=0.05 <=0.04
S (%) <=0.05 <=0.04
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 3) 070M55 IS 1875 Class 5
Tensile Strength Not specified 710 MPa min
Yield Strength Not specified 350 MPa min
Elongation Not specified >=13%
Hardness Not specified 200 HB min
Condition Not specified as rolled or as forged and normalised, ruling section up to 100 mm
Normalising Temperature Not specified 810-840 °C (for information)
Typical Applications
BS 970 (Part 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
IS 1875 Class 5
Billets, blooms, slabs and bars for general engineering forgings
Can BS 970 (Part 3) 070M55 Be Substituted With IS 1875 Class 5?
BS 970 (Part 3) 070M55 and IS 1875 Class 5 overlap closely enough on chemistry and mechanical properties that IS 1875 Class 5 is often considered as a substitute for BS 970 (Part 3) 070M55 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 (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)
IS 1875 Class 5
No active listings currently.
On M-EX Right Now
BS 970 (Part 3) 070M55
2 active listings and RFQs →
IS 1875 Class 5
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 3) 070M55 and IS 1875 Class 5?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 070M55 be substituted with IS 1875 Class 5?
BS 970 (Part 3) 070M55 and IS 1875 Class 5 overlap closely enough on chemistry and mechanical properties that IS 1875 Class 5 is often considered as a substitute for BS 970 (Part 3) 070M55 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.