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BS 970 (Part 1) 045M10 vs BS 970 (Part 3) 070M55

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 045M10 (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) 045M10 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., 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) 045M10 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) 045M10 vs BS 970 (Part 3) 070M55 is a 81% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With BS 970 (Part 1) 045M10:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A40 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A57 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A45 BS 970 (Part 1) 070M20 BS 970 (Part 1) 060A81
Match Breakdown
CHEMISTRY MATCH
81%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 (Part 1) 045M10 BS 970 (Part 3) 070M55
Standard BS 970 (Part 1):1983 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.07-0.13 0.50-0.60
Mn (%) 0.30-0.60 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) 045M10
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
BS 970 (Part 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
Key Differences
Can BS 970 (Part 1) 045M10 Be Substituted With BS 970 (Part 3) 070M55?
BS 970 (Part 1) 045M10 and BS 970 (Part 3) 070M55 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 045M10
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) 045M10
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) 045M10 and BS 970 (Part 3) 070M55?
BS 970 (Part 3) 070M55 specifies Si which is not specified for BS 970 (Part 1) 045M10.
Can BS 970 (Part 1) 045M10 be substituted with BS 970 (Part 3) 070M55?
BS 970 (Part 1) 045M10 and BS 970 (Part 3) 070M55 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.