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GOST 1050 35 vs BS 970 (Part 3) 635M15

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

GOST 1050 35 (GOST 1050-2013) and BS 970 (Part 3) 635M15 (BS 970 (Part 3):1991) are both steel grades. GOST 1050 35 is classified under Carbon Steel, while BS 970 (Part 3) 635M15 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. GOST 1050 35 is typically used for shafts, axles, connecting rods, forgings, gears, machine parts, while BS 970 (Part 3) 635M15 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). BS 970 (Part 3) 635M15 is defined under British Standards (BS) (United Kingdom).

As per chemical composition, GOST 1050 35 vs BS 970 (Part 3) 635M15 is a 66.3% 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 35:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
66.3%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GOST 1050 35 BS 970 (Part 3) 635M15
Standard GOST 1050-2013 BS 970 (Part 3):1991
Category Carbon Steel Alloy Steel
C (%) 0.32-0.39 0.12-0.18
Si (%) 0.17-0.37 0.10-0.40
Mn (%) 0.50-0.80 0.60-0.90
S (%) <=0.040 <=0.05
P (%) <=0.035 <=0.04
Cr (%) <=0.25 0.4-0.80
Ni (%) <=0.25 0.70-1.10
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 35 BS 970 (Part 3) 635M15
Tensile Strength 530-680 MPa Not specified
Yield Strength >=315 MPa Not specified
Elongation >=20% Not specified
Hardness 163-207 HB Not specified
Typical Applications
GOST 1050 35
shafts, axles, connecting rods, forgings, gears, machine parts
BS 970 (Part 3) 635M15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Key Differences
Can GOST 1050 35 Be Substituted With BS 970 (Part 3) 635M15?
GOST 1050 35 and BS 970 (Part 3) 635M15 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 35
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–6700 mm (240.16–263.78 in)
BS 970 (Part 3) 635M15
No active listings currently.
On M-EX Right Now
GOST 1050 35
2 active listings and RFQs →
BS 970 (Part 3) 635M15
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Frequently Asked Questions
What is the difference between GOST 1050 35 and BS 970 (Part 3) 635M15?
Different category: GOST 1050 35 is Carbon Steel, BS 970 (Part 3) 635M15 is Alloy Steel. GOST 1050 35 specifies Cu which is not specified for BS 970 (Part 3) 635M15.
Can GOST 1050 35 be substituted with BS 970 (Part 3) 635M15?
GOST 1050 35 and BS 970 (Part 3) 635M15 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.