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GOST 380 St3sp vs ASTM A1008 SS Grade 50

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

GOST 380 St3sp (GOST 380-2005) and ASTM A1008 SS Grade 50 (ASTM A1008) 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 A1008 SS Grade 50 is commonly used for cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength. ASTM A1008 SS Grade 50 is defined under ASTM International (United States).

As per chemical composition, GOST 380 St3sp vs ASTM A1008 SS Grade 50 is a 67.9% match. As per mechanical properties, the match is 0%. 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 400W CSA G40.21 350W CSA G40.21 400A ASTM A1008 SS Grade 80 GOST 19281 09G2S CSA G40.21 300W ASTM A283C ASTM A572 Gr.65 CSA G40.21 480W
Match Breakdown
CHEMISTRY MATCH
67.9%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GOST 380 St3sp ASTM A1008 SS Grade 50
Standard GOST 380-2005 ASTM A1008
Category Structural Steel Structural Steel
C (%) 0.14-0.22 <=0.20
Si (%) 0.15-0.30 <=0.50
Mn (%) 0.40-0.65 <=1.35
S (%) <=0.050 <=0.040
P (%) <=0.040 <=0.040
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 A1008 SS Grade 50
Tensile Strength 370-490 MPa 380 MPa min
Yield Strength >=245 MPa 340 MPa min
Elongation >=22% 14% min
Hardness <=170 HB Not specified
Typical Applications
GOST 380 St3sp
structural components, welded structures, plates, construction equipment, machinery frames, rolled sections
ASTM A1008 SS Grade 50
Cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength
Key Differences
Can GOST 380 St3sp Be Substituted With ASTM A1008 SS Grade 50?
GOST 380 St3sp and ASTM A1008 SS Grade 50 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 A1008 SS Grade 50
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–3400 mm (106.3–133.86 in)
On M-EX Right Now
GOST 380 St3sp
2 active listings and RFQs →
ASTM A1008 SS Grade 50
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 380 St3sp and ASTM A1008 SS Grade 50?
GOST 380 St3sp specifies Cu, Ni, Cr which are not specified for ASTM A1008 SS Grade 50.
Can GOST 380 St3sp be substituted with ASTM A1008 SS Grade 50?
GOST 380 St3sp and ASTM A1008 SS Grade 50 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.