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ASTM A572 Gr.65 vs AS/NZS 1595 C450

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

ASTM A572 Gr.65 (ASTM A572) and AS/NZS 1595 C450 (AS/NZS 1595:1998) 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 AS/NZS 1595 C450 is commonly used for higher-strength cold-rolled structural steel sheet; roll-forming, purlins, high-strength cold-formed sections. ASTM A572 Gr.65 is defined under ASTM International, originating from United States, while AS/NZS 1595 C450 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, ASTM A572 Gr.65 vs AS/NZS 1595 C450 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 ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
93.2%
MECHANICAL MATCH
33.3%
OVERALL
73.3%
Specifications
Property ASTM A572 Gr.65 AS/NZS 1595 C450
Standard ASTM A572 AS/NZS 1595:1998
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 AS/NZS 1595 C450
Tensile Strength 550-690 MPa 500 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.
AS/NZS 1595 C450
Higher-strength cold-rolled structural steel sheet; roll-forming, purlins, high-strength cold-formed sections
Key Differences
Can ASTM A572 Gr.65 Be Substituted With AS/NZS 1595 C450?
ASTM A572 Gr.65 and AS/NZS 1595 C450 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)
AS/NZS 1595 C450
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–2500 mm (98.43–98.43 in)
On M-EX Right Now
ASTM A572 Gr.65
4 active listings and RFQs →
AS/NZS 1595 C450
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A572 Gr.65 and AS/NZS 1595 C450?
ASTM A572 Gr.65 specifies V, Nb which are not specified for AS/NZS 1595 C450.
Can ASTM A572 Gr.65 be substituted with AS/NZS 1595 C450?
ASTM A572 Gr.65 and AS/NZS 1595 C450 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.