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BS 970 EN8 vs BS 970 (Part 1) 045M10

Minimal Match — 52.7% match based on chemical composition and mechanical property overlap.

BS 970 EN8 (BS 970:1955) and BS 970 (Part 1) 045M10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN8 is typically used for shafts, gears, studs, keys, general machined parts, while BS 970 (Part 1) 045M10 is commonly used for case hardening steel (section four). BS 970 EN8 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN8 vs BS 970 (Part 1) 045M10 is a 79% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 52.7%.

Frequently Compared With BS 970 EN8:
BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A12 BS 970 (Part 1) 040A04 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
79%
MECHANICAL MATCH
0%
OVERALL
52.7%
Specifications
Property BS 970 EN8 BS 970 (Part 1) 045M10
Standard BS 970:1955 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.35-0.45 0.07-0.13
Si (%) 0.05-0.35 Not specified
Mn (%) 0.60-1.00 0.30-0.60
S (%) <=0.060 Not specified
P (%) <=0.060 Not specified
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 EN8 BS 970 (Part 1) 045M10
Tensile Strength ≥541 MPa (35 tons/sq in, converted) 430 MPa min
Yield Strength ≥278 MPa (18 tons/sq in, converted) Not specified
Elongation ≥20% 18 % min
Hardness 152-207 HB Not specified
Condition NGC 1, Normalised, ruling section 6 in (lowest-strength condition of the standard) Case hardened, 19 mm test bar
Typical Applications
BS 970 EN8
Shafts, gears, studs, keys, general machined parts
BS 970 (Part 1) 045M10
Case hardening steel (section four)
Key Differences
Can BS 970 EN8 Be Substituted With BS 970 (Part 1) 045M10?
BS 970 EN8 and BS 970 (Part 1) 045M10 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 EN8
Round Bar → (30 listings)
Diameter: 32–70 mm (1.26–2.76 in)
Length: 4800–7000 mm (188.98–275.59 in)
Square Bar → (6 listings)
Size: 30–40 mm (1.18–1.57 in)
Length: 4900–6600 mm (192.91–259.84 in)
Forging → (6 listings)
Diameter: 150–150 mm (5.91–5.91 in)
Length: 500–800 mm (19.69–31.5 in)
Wire Rod Coil → (4 listings)
Diameter: 10–12 mm (0.39–0.47 in)
Flat Bar → (4 listings)
Thickness: 30–30 mm (1.18–1.18 in)
Width: 150–150 mm (5.91–5.91 in)
Length: 3100–6500 mm (122.05–255.91 in)
Hollow Bar → (3 listings)
OD: 120–120 mm (4.72–4.72 in)
ID: 60–60 mm (2.36–2.36 in)
Length: 5500–6500 mm (216.54–255.91 in)
BS 970 (Part 1) 045M10
No active listings currently.
On M-EX Right Now
BS 970 EN8
53 active listings and RFQs →
BS 970 (Part 1) 045M10
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN8 and BS 970 (Part 1) 045M10?
BS 970 EN8 specifies Si, S, P which are not specified for BS 970 (Part 1) 045M10.
Can BS 970 EN8 be substituted with BS 970 (Part 1) 045M10?
BS 970 EN8 and BS 970 (Part 1) 045M10 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.