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ASTM A572 Gr.65 vs EN 10346 S450GD

Close Alternative — 73.3% match based on chemical composition and mechanical property overlap.

ASTM A572 Gr.65 (ASTM A572) and EN 10346 S450GD (EN 10346:2015) are both steel grades. Both fall under the Structural Steel category. ASTM A572 Gr.65 is typically used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members., while EN 10346 S450GD is commonly used for higher-strength continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed high-strength structural sections, purlins, roofing and cladding requiring corrosion protection. ASTM A572 Gr.65 is defined under ASTM International, originating from United States, while EN 10346 S450GD is defined under European Standard (EN), originating from Europe.

As per chemical composition, ASTM A572 Gr.65 vs EN 10346 S450GD is a 93.2% match. As per mechanical properties, the match is 33.3%. Combined, this makes them a close alternative overall at 73.3%.

Frequently Compared With ASTM A572 Gr.65:
ASTM A572 Grade 50 ASTM A283C CSA G40.21 300W CSA G40.21 350W CSA G40.21 400W GOST 19281 09G2S CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 480W AS/NZS 3679.1 350 AS/NZS 1595 C450 ASTM A1008 SS Grade 50
Match Breakdown
CHEMISTRY MATCH
93.2%
MECHANICAL MATCH
33.3%
OVERALL
73.3%
Specifications
Property ASTM A572 Gr.65 EN 10346 S450GD
Standard ASTM A572 EN 10346:2015
Category Structural Steel Structural Steel
C (%) 0.23 max <=0.22
Mn (%) 1.35 max <=1.60
Si (%) 0.40 max <=0.50
V (%) 0.15 max Not specified
Nb (%) 0.05 max Not specified
P (%) 0.040 max <=0.040
S (%) 0.050 max <=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 A572 Gr.65 EN 10346 S450GD
Tensile Strength 550-690 MPa 480 MPa min
Yield Strength 450 MPa min 450 MPa min
Elongation 18-21% 12% min
Hardness 170-220 HB Not specified
Typical Applications
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
EN 10346 S450GD
Higher-strength continuous hot-dip galvanized structural steel strip/sheet; roll-formed and cold-formed high-strength structural sections, purlins, roofing and cladding requiring corrosion protection
Key Differences
Can ASTM A572 Gr.65 Be Substituted With EN 10346 S450GD?
ASTM A572 Gr.65 and EN 10346 S450GD 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 A572 Gr.65
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4400 mm (102.36–173.23 in)
EN 10346 S450GD
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–3000 mm (110.24–118.11 in)
On M-EX Right Now
ASTM A572 Gr.65
4 active listings and RFQs →
EN 10346 S450GD
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A572 Gr.65 and EN 10346 S450GD?
ASTM A572 Gr.65 specifies V, Nb which are not specified for EN 10346 S450GD.
Can ASTM A572 Gr.65 be substituted with EN 10346 S450GD?
ASTM A572 Gr.65 and EN 10346 S450GD 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.