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GOST 380 St3sp vs ASTM A283C

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

GOST 380 St3sp (GOST 380-2005) and ASTM A283C (ASTM A283) are both steel grades. Both fall under the Structural Steel category. GOST 380 St3sp is typically used for structural components, welded structures, plates, construction equipment, machinery frames, rolled sections, while ASTM A283C is commonly used for used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.. ASTM A283C is defined under ASTM International (United States).

As per chemical composition, GOST 380 St3sp vs ASTM A283C is a 69% match. As per mechanical properties, the match is 19%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 380 St3sp:
AS/NZS 3679.1 300 CSA G40.21 260W AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 400W CSA G40.21 400A ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80 GOST 19281 09G2S CSA G40.21 300W ASTM A572 Gr.65 CSA G40.21 480W
Match Breakdown
CHEMISTRY MATCH
69%
MECHANICAL MATCH
19%
OVERALL
35%
Specifications
Property GOST 380 St3sp ASTM A283C
Standard GOST 380-2005 ASTM A283
Category Structural Steel Structural Steel
C (%) 0.14-0.22 0.24 max
Si (%) 0.15-0.30 0.40 max
Mn (%) 0.40-0.65 0.90 max
S (%) <=0.050 0.040 max
P (%) <=0.040 0.035 max
Cu (%) <=0.30 Not specified
Ni (%) <=0.30 Not specified
Cr (%) <=0.30 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 380 St3sp ASTM A283C
Tensile Strength 370-490 MPa 380-515 MPa
Yield Strength >=245 MPa 205 MPa min
Elongation >=22% 23-27%
Hardness <=170 HB 120-170 HB
Typical Applications
GOST 380 St3sp
structural components, welded structures, plates, construction equipment, machinery frames, rolled sections
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
Key Differences
Can GOST 380 St3sp Be Substituted With ASTM A283C?
GOST 380 St3sp and ASTM A283C 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 St3sp
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3900–3900 mm (153.54–153.54 in)
ASTM A283C
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3700 mm (114.17–145.67 in)
On M-EX Right Now
GOST 380 St3sp
2 active listings and RFQs →
ASTM A283C
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 380 St3sp and ASTM A283C?
GOST 380 St3sp specifies Cu, Ni, Cr which are not specified for ASTM A283C.
Can GOST 380 St3sp be substituted with ASTM A283C?
GOST 380 St3sp and ASTM A283C 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.