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BS 970 (Part 1) 070M55 vs BS 970 (Part 3) 070M55

Strong Match — 94.3% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 070M55 (BS 970 (Part 1):1983) and BS 970 (Part 3) 070M55 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 070M55 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while BS 970 (Part 3) 070M55 is commonly used for used for springs, blades, wear plates, hand tools, shafts, and cutting components.. BS 970 (Part 1) 070M55 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 070M55 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 070M55 vs BS 970 (Part 3) 070M55 is a 94.3% 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 94.3%.

Frequently Compared With BS 970 (Part 1) 070M55:
BS 970 (Part 1) 060A32 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A45 BS 970 (Part 1) 060A57 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
94.3%
MECHANICAL MATCH
No shared data
OVERALL
94.3%
Specifications
Property BS 970 (Part 1) 070M55 BS 970 (Part 3) 070M55
Standard BS 970 (Part 1):1983 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.50-0.60 0.50-0.60
Mn (%) 0.50-0.90 0.50-0.90
P (%) <=0.050 <=0.05
S (%) <=0.050 <=0.05
Si (%) Not specified 0.10-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 1) 070M55
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
BS 970 (Part 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
Key Differences
Can BS 970 (Part 1) 070M55 Be Substituted With BS 970 (Part 3) 070M55?
BS 970 (Part 1) 070M55 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 BS 970 (Part 1) 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 1) 070M55
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
BS 970 (Part 1) 070M55
0 active listings and RFQs →
BS 970 (Part 3) 070M55
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 070M55 and BS 970 (Part 3) 070M55?
BS 970 (Part 3) 070M55 specifies Si which is not specified for BS 970 (Part 1) 070M55.
Can BS 970 (Part 1) 070M55 be substituted with BS 970 (Part 3) 070M55?
BS 970 (Part 1) 070M55 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 BS 970 (Part 1) 070M55 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.