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BS 970 EN8M vs BS 970 (Part 3) 212A42

Strong Match — 96.3% match based on chemical composition and mechanical property overlap.

BS 970 EN8M (BS 970:1955) and BS 970 (Part 3) 212A42 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Free Machining Steel category. BS 970 EN8M is typically used for high volume turned parts, automotive components, while BS 970 (Part 3) 212A42 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; free-cutting steel (table 12). BS 970 EN8M is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 212A42 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN8M vs BS 970 (Part 3) 212A42 is a 96.3% 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 96.3%.

Frequently Compared With BS 970 EN8M:
SAE J403 1140 SAE J403 1140 SAE J403 1141 SAE J403 1118 SAE J403 1138 SAE J403 1138 IS 4432 10C8S10 SAE J403 1138 IS 1570 (Part 3) 10C8S10 SAE J403 1117 SAE J403 1117 SAE J403 1117
Match Breakdown
CHEMISTRY MATCH
96.3%
MECHANICAL MATCH
No shared data
OVERALL
96.3%
Specifications
Property BS 970 EN8M BS 970 (Part 3) 212A42
Standard BS 970:1955 BS 970 (Part 3):1991
Category Free Machining Steel Free Machining Steel
C (%) 0.35-0.45 0.40-0.45
Si (%) <=0.25 <=0.25
Mn (%) 1.0-1.30 1.00-1.30
S (%) 0.12-0.20 0.12-0.20
P (%) <=0.060 <=0.06
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 EN8M BS 970 (Part 3) 212A42
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Yield Strength ≥278 MPa (18 tons/sq in, converted) Not specified
Elongation ≥20% Not specified
Hardness 152-207 HB Not specified
Condition Normalised, ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN8M
High volume turned parts, automotive components
BS 970 (Part 3) 212A42
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; free-cutting steel (Table 12)
Can BS 970 EN8M Be Substituted With BS 970 (Part 3) 212A42?
BS 970 EN8M and BS 970 (Part 3) 212A42 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 212A42 is often considered as a substitute for BS 970 EN8M 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 EN8M
Round Bar → (3 listings)
Diameter: 60–60 mm (2.36–2.36 in)
Length: 4000–6900 mm (157.48–271.65 in)
BS 970 (Part 3) 212A42
No active listings currently.
On M-EX Right Now
BS 970 EN8M
3 active listings and RFQs →
BS 970 (Part 3) 212A42
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN8M and BS 970 (Part 3) 212A42?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN8M be substituted with BS 970 (Part 3) 212A42?
BS 970 EN8M and BS 970 (Part 3) 212A42 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 212A42 is often considered as a substitute for BS 970 EN8M in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.