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ASTM A572 Gr.65 vs ASTM A572/A572M Grade 65

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

ASTM A572 Gr.65 (ASTM A572) and ASTM A572/A572M Grade 65 (ASTM A572/A572M:2021) 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 ASTM A572/A572M Grade 65 is commonly used for riveted or bolted bridge construction, or riveted, bolted or welded construction in other applications. ASTM A572 Gr.65 is defined under ASTM International, originating from United States, while ASTM A572/A572M Grade 65 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A572 Gr.65 vs ASTM A572/A572M Grade 65 is a 93.3% 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
93.3%
MECHANICAL MATCH
33.3%
OVERALL
73.3%
Specifications
Property ASTM A572 Gr.65 ASTM A572/A572M Grade 65
Standard ASTM A572 ASTM A572/A572M:2021
Category Structural Steel Structural Steel
C (%) 0.23 max <=0.23
Mn (%) 1.35 max <=1.65
Si (%) 0.40 max <=0.40
V (%) 0.15 max Not specified
Nb (%) 0.05 max Not specified
P (%) 0.040 max <=0.030
S (%) 0.050 max <=0.030
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 ASTM A572/A572M Grade 65
Tensile Strength 550-690 MPa >=550 MPa
Yield Strength 450 MPa min >=450 MPa
Elongation 18-21% >=15%
Hardness 170-220 HB Not specified
Condition Not specified Tension test per Table 4; one set of minimum values for all product thicknesses; Elongation is in 200 mm gauge length, 50 mm values in the tensile block
Typical Applications
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
ASTM A572/A572M Grade 65
Riveted or bolted bridge construction, or riveted, bolted or welded construction in other applications
Key Differences
Can ASTM A572 Gr.65 Be Substituted With ASTM A572/A572M Grade 65?
ASTM A572 Gr.65 and ASTM A572/A572M Grade 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
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)
ASTM A572/A572M Grade 65
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ASTM A572 Gr.65
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ASTM A572/A572M Grade 65
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Frequently Asked Questions
What is the difference between ASTM A572 Gr.65 and ASTM A572/A572M Grade 65?
ASTM A572 Gr.65 specifies V, Nb which are not specified for ASTM A572/A572M Grade 65.
Can ASTM A572 Gr.65 be substituted with ASTM A572/A572M Grade 65?
ASTM A572 Gr.65 and ASTM A572/A572M Grade 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.