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GOST 1050 20 vs BS 970 (Part 1) 055M15

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

GOST 1050 20 (GOST 1050-2013) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. GOST 1050 20 is typically used for shafts, bolts, gears, pins, forgings, machined components, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). BS 970 (Part 1) 055M15 is defined under British Standards (BS) (United Kingdom).

As per chemical composition, GOST 1050 20 vs BS 970 (Part 1) 055M15 is a 65.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 1050 20:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
65.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GOST 1050 20 BS 970 (Part 1) 055M15
Standard GOST 1050-2013 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.17-0.24 <=0.20
Si (%) 0.17-0.37 Not specified
Mn (%) 0.35-0.65 <=0.80
S (%) <=0.040 Not specified
P (%) <=0.035 Not specified
Cr (%) <=0.25 Not specified
Ni (%) <=0.25 Not specified
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 20 BS 970 (Part 1) 055M15
Tensile Strength 410-550 MPa 310 MPa min
Yield Strength >=245 MPa Not specified
Elongation >=24% 25 % min
Hardness <=156 HB 121 HB min
Condition Not specified As-rolled
Typical Applications
GOST 1050 20
shafts, bolts, gears, pins, forgings, machined components
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can GOST 1050 20 Be Substituted With BS 970 (Part 1) 055M15?
GOST 1050 20 and BS 970 (Part 1) 055M15 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 20
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5900–5900 mm (232.28–232.28 in)
BS 970 (Part 1) 055M15
No active listings currently.
On M-EX Right Now
GOST 1050 20
2 active listings and RFQs →
BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between GOST 1050 20 and BS 970 (Part 1) 055M15?
GOST 1050 20 specifies Si, S, P, Cr which are not specified for BS 970 (Part 1) 055M15.
Can GOST 1050 20 be substituted with BS 970 (Part 1) 055M15?
GOST 1050 20 and BS 970 (Part 1) 055M15 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.