Post Stock Login Register

AS/NZS 3678 Grade 350 vs ASTM A572 Gr.65

Close Alternative — 71.4% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 350 (AS/NZS 3678:2016) and ASTM A572 Gr.65 (ASTM A572) are both steel grades. Both fall under the Structural Steel category. AS/NZS 3678 Grade 350 is typically used for bridges,heavy structures,mining equipment,cranes,offshore platforms,pressure vessels,structural components, while ASTM A572 Gr.65 is commonly used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.. AS/NZS 3678 Grade 350 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while ASTM A572 Gr.65 is defined under ASTM International, originating from United States.

As per chemical composition, AS/NZS 3678 Grade 350 vs ASTM A572 Gr.65 is a 89.1% match. As per mechanical properties, the match is 36.1%. Combined, this makes them a close alternative overall at 71.4%.

Frequently Compared With AS/NZS 3678 Grade 350:
CSA G40.21 260W CSA G40.21 300W AS/NZS 3679.1 300 CSA G40.21 350W CSA G40.21 400A CSA G40.21 480W GOST 19281 09G2S CSA G40.21 400W AS/NZS 3679.1 350 ASTM A1008 SS Grade 80 ASTM A1008 SS Grade 50 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
89.1%
MECHANICAL MATCH
36.1%
OVERALL
71.4%
Specifications
Property AS/NZS 3678 Grade 350 ASTM A572 Gr.65
Standard AS/NZS 3678:2016 ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.22 0.23 max
Mn (%) <=1.70 1.35 max
P (%) <=0.040 0.040 max
S (%) <=0.040 0.050 max
Si (%) Not specified 0.40 max
V (%) Not specified 0.15 max
Nb (%) Not specified 0.05 max
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AS/NZS 3678 Grade 350 ASTM A572 Gr.65
Tensile Strength 480-620 MPa 550-690 MPa
Yield Strength 360 MPa min 450 MPa min
Elongation 18-22 % 18-21%
Hardness Not specified 170-220 HB
Typical Applications
AS/NZS 3678 Grade 350
bridges,heavy structures,mining equipment,cranes,offshore platforms,pressure vessels,structural components
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
Key Differences
Can AS/NZS 3678 Grade 350 Be Substituted With ASTM A572 Gr.65?
AS/NZS 3678 Grade 350 and ASTM A572 Gr.65 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
AS/NZS 3678 Grade 350
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3300–4500 mm (129.92–177.17 in)
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)
On M-EX Right Now
AS/NZS 3678 Grade 350
2 active listings and RFQs →
ASTM A572 Gr.65
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 350 and ASTM A572 Gr.65?
ASTM A572 Gr.65 specifies Si, V, Nb which are not specified for AS/NZS 3678 Grade 350.
Can AS/NZS 3678 Grade 350 be substituted with ASTM A572 Gr.65?
AS/NZS 3678 Grade 350 and ASTM A572 Gr.65 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.