Post Stock Login Register

GOST 380 St3ps vs BS 970 (Part 3) 635M15

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

GOST 380 St3ps (GOST 380-2005) and BS 970 (Part 3) 635M15 (BS 970 (Part 3):1991) are both steel grades. GOST 380 St3ps is classified under Structural 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 380 St3ps is typically used for structural steelwork, welded assemblies, construction materials, plates, bars, channels, 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 380 St3ps vs BS 970 (Part 3) 635M15 is a 65.3% 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 380 St3ps:
ASTM A283C CSA G40.21 300W AS/NZS 3679.1 300 AS/NZS 3679.1 350 ASTM A572 Gr.65 CSA G40.21 400W CSA G40.21 350W ASTM A1008 SS Grade 80 CSA G40.21 260W CSA G40.21 480W GOST 19281 09G2S CSA G40.21 400A
Match Breakdown
CHEMISTRY MATCH
65.3%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property GOST 380 St3ps BS 970 (Part 3) 635M15
Standard GOST 380-2005 BS 970 (Part 3):1991
Category Structural Steel Alloy Steel
C (%) 0.14-0.22 0.12-0.18
Si (%) 0.05-0.15 0.10-0.40
Mn (%) 0.40-0.65 0.60-0.90
S (%) <=0.050 <=0.05
P (%) <=0.040 <=0.04
Cu (%) <=0.30 Not specified
Ni (%) <=0.30 0.70-1.10
Cr (%) <=0.30 0.4-0.80
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GOST 380 St3ps BS 970 (Part 3) 635M15
Tensile Strength 370-490 MPa Not specified
Yield Strength >=235 MPa Not specified
Elongation >=22% Not specified
Hardness <=170 HB Not specified
Typical Applications
GOST 380 St3ps
structural steelwork, welded assemblies, construction materials, plates, bars, channels
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 380 St3ps Be Substituted With BS 970 (Part 3) 635M15?
GOST 380 St3ps 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 380 St3ps
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3200–4400 mm (125.98–173.23 in)
BS 970 (Part 3) 635M15
No active listings currently.
On M-EX Right Now
GOST 380 St3ps
2 active listings and RFQs →
BS 970 (Part 3) 635M15
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 380 St3ps and BS 970 (Part 3) 635M15?
Different category: GOST 380 St3ps is Structural Steel, BS 970 (Part 3) 635M15 is Alloy Steel. GOST 380 St3ps specifies Cu which is not specified for BS 970 (Part 3) 635M15.
Can GOST 380 St3ps be substituted with BS 970 (Part 3) 635M15?
GOST 380 St3ps 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.