Post Stock Login Register

BS 970 EN3A vs BS 970 (Part 1) 070M20

Strong Match — 90.5% match based on chemical composition and mechanical property overlap.

BS 970 EN3A (BS 970:1955) and BS 970 (Part 1) 070M20 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN3A is typically used for bolts, screws, light structural components, while BS 970 (Part 1) 070M20 is commonly used for wrought steel supplied as bright bar for mechanical and allied engineering purposes (table 4).. BS 970 EN3A is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 070M20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN3A vs BS 970 (Part 1) 070M20 is a 90.5% 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 90.5%.

Frequently Compared With BS 970 EN3A:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 3) 070M20 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 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10
Match Breakdown
CHEMISTRY MATCH
90.5%
MECHANICAL MATCH
No shared data
OVERALL
90.5%
Specifications
Property BS 970 EN3A BS 970 (Part 1) 070M20
Standard BS 970:1955 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) 0.15-0.25 0.16-0.24
Si (%) 0.05-0.35 Not specified
Mn (%) 0.40-0.90 0.50-0.90
S (%) <=0.060 <=0.050
P (%) <=0.060 <=0.050
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 EN3A BS 970 (Part 1) 070M20
Tensile Strength ≥432 MPa (28 tons/sq in, converted) Not specified
Elongation ≥25% Not specified
Condition , ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN3A
Bolts, screws, light structural components
BS 970 (Part 1) 070M20
Wrought steel supplied as bright bar for mechanical and allied engineering purposes (Table 4).
Key Differences
Can BS 970 EN3A Be Substituted With BS 970 (Part 1) 070M20?
BS 970 EN3A and BS 970 (Part 1) 070M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 070M20 is often considered as a substitute for BS 970 EN3A 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 EN3A
Round Bar → (5 listings)
Diameter: 40–45 mm (1.57–1.77 in)
Length: 5100–7000 mm (200.79–275.59 in)
BS 970 (Part 1) 070M20
No active listings currently.
On M-EX Right Now
BS 970 EN3A
5 active listings and RFQs →
BS 970 (Part 1) 070M20
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN3A and BS 970 (Part 1) 070M20?
BS 970 EN3A specifies Si which is not specified for BS 970 (Part 1) 070M20.
Can BS 970 EN3A be substituted with BS 970 (Part 1) 070M20?
BS 970 EN3A and BS 970 (Part 1) 070M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 070M20 is often considered as a substitute for BS 970 EN3A in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.