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GOST 1050 45 vs BS 970 EN111A

Related Material — 65% match based on chemical composition and mechanical property overlap.

GOST 1050 45 (GOST 1050-2013) and BS 970 EN111A (BS 970:1955) are both steel grades. GOST 1050 45 is classified under Carbon Steel, while BS 970 EN111A is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. BS 970 EN111A is defined under British Standards (BS) (United Kingdom).

As per chemical composition, GOST 1050 45 vs BS 970 EN111A is a 65.8% 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 65%.

Frequently Compared With GOST 1050 45:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
65.8%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GOST 1050 45 BS 970 EN111A
Standard GOST 1050-2013 BS 970:1955
Category Carbon Steel Alloy Steel
C (%) 0.42-0.50 0.33-0.38
Si (%) 0.17-0.37 0.10-0.35
Mn (%) 0.50-0.80 0.60-0.90
S (%) <=0.040 <=0.050
P (%) <=0.035 <=0.050
Cr (%) <=0.25 0.45-0.75
Ni (%) <=0.25 1.00-1.50
Cu (%) <=0.25 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 GOST 1050 45 BS 970 EN111A
Tensile Strength 600-750 MPa Not specified
Yield Strength >=355 MPa Not specified
Elongation >=16% Not specified
Hardness 170-229 HB Not specified
Typical Applications
GOST 1050 45
gears, shafts, spindles, bolts, axles, forged components
BS 970 EN111A
Not documented
Key Differences
Can GOST 1050 45 Be Substituted With BS 970 EN111A?
GOST 1050 45 and BS 970 EN111A 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
GOST 1050 45
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6600–7000 mm (259.84–275.59 in)
BS 970 EN111A
No active listings currently.
On M-EX Right Now
GOST 1050 45
2 active listings and RFQs →
BS 970 EN111A
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 1050 45 and BS 970 EN111A?
Different category: GOST 1050 45 is Carbon Steel, BS 970 EN111A is Alloy Steel. GOST 1050 45 specifies Cu which is not specified for BS 970 EN111A.
Can GOST 1050 45 be substituted with BS 970 EN111A?
GOST 1050 45 and BS 970 EN111A 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.