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BS 970 (Part 1) 080M46 vs BS 970 (Part 3) 070M55

Close Alternative — 83.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 080M46 (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) 080M46 is typically used for used for crankshafts, connecting rods, spindles, gears, shafts, and machine tools., 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) 080M46 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) 080M46 vs BS 970 (Part 3) 070M55 is a 83.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 83.4%.

Frequently Compared With BS 970 (Part 1) 080M46:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A45 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
83.4%
MECHANICAL MATCH
No shared data
OVERALL
83.4%
Specifications
Property BS 970 (Part 1) 080M46 BS 970 (Part 3) 070M55
Standard BS 970 (Part 1):1983 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.42-0.50 0.50-0.60
Mn (%) 0.60-1.00 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) 080M46
Used for crankshafts, connecting rods, spindles, gears, shafts, and machine tools.
BS 970 (Part 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
Key Differences
Can BS 970 (Part 1) 080M46 Be Substituted With BS 970 (Part 3) 070M55?
BS 970 (Part 1) 080M46 and BS 970 (Part 3) 070M55 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 080M46
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5900–6600 mm (232.28–259.84 in)
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) 080M46
2 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) 080M46 and BS 970 (Part 3) 070M55?
BS 970 (Part 3) 070M55 specifies Si which is not specified for BS 970 (Part 1) 080M46.
Can BS 970 (Part 1) 080M46 be substituted with BS 970 (Part 3) 070M55?
BS 970 (Part 1) 080M46 and BS 970 (Part 3) 070M55 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.