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ASTM A1008 SS Grade 50 vs EN 10346 S350GD

Close Alternative — 77.4% match based on chemical composition and mechanical property overlap.

ASTM A1008 SS Grade 50 (ASTM A1008) and EN 10346 S350GD (EN 10346:2015) are both steel grades. Both fall under the Structural Steel category. ASTM A1008 SS Grade 50 is typically used for cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength, while EN 10346 S350GD is commonly used for continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed structural sections, purlins, roofing and cladding requiring corrosion protection. ASTM A1008 SS Grade 50 is defined under ASTM International, originating from United States, while EN 10346 S350GD is defined under European Standard (EN), originating from Europe.

As per chemical composition, ASTM A1008 SS Grade 50 vs EN 10346 S350GD is a 99.4% match. As per mechanical properties, the match is 33.3%. Combined, this makes them a close alternative overall at 77.4%.

Frequently Compared With ASTM A1008 SS Grade 50:
AS/NZS 1595 C450 GOST 19281 09G2S AS/NZS 3679.1 350 ASTM A1008 SS Grade 80 CSA G40.21 300W CSA G40.21 400A AS/NZS 1595 C350 ASTM A283C AS/NZS 3679.1 300 CSA G40.21 400W CSA G40.21 260W CSA G40.21 350W
Match Breakdown
CHEMISTRY MATCH
99.4%
MECHANICAL MATCH
33.3%
OVERALL
77.4%
Specifications
Property ASTM A1008 SS Grade 50 EN 10346 S350GD
Standard ASTM A1008 EN 10346:2015
Category Structural Steel Structural Steel
C (%) <=0.20 <=0.20
Mn (%) <=1.35 <=1.50
Si (%) <=0.50 <=0.50
P (%) <=0.040 <=0.040
S (%) <=0.040 <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A1008 SS Grade 50 EN 10346 S350GD
Tensile Strength 380 MPa min 420 MPa min
Yield Strength 340 MPa min 350 MPa min
Elongation 14% min 14% min
Typical Applications
ASTM A1008 SS Grade 50
Cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength
EN 10346 S350GD
Continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed structural sections, purlins, roofing and cladding requiring corrosion protection
Can ASTM A1008 SS Grade 50 Be Substituted With EN 10346 S350GD?
ASTM A1008 SS Grade 50 and EN 10346 S350GD are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
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)
EN 10346 S350GD
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2700–4100 mm (106.3–161.42 in)
On M-EX Right Now
ASTM A1008 SS Grade 50
2 active listings and RFQs →
EN 10346 S350GD
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A1008 SS Grade 50 and EN 10346 S350GD?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A1008 SS Grade 50 be substituted with EN 10346 S350GD?
ASTM A1008 SS Grade 50 and EN 10346 S350GD are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.