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ASTM A1008 SS Grade 80 vs AS/NZS 3678 Grade 450

Strong Match — 96.2% match based on chemical composition and mechanical property overlap.

ASTM A1008 SS Grade 80 (ASTM A1008) and AS/NZS 3678 Grade 450 (AS/NZS 3678:2016) are both steel grades. Both fall under the Structural Steel category. ASTM A1008 SS Grade 80 is typically used for cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts, while AS/NZS 3678 Grade 450 is commonly used for heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.. ASTM A1008 SS Grade 80 is defined under ASTM International, originating from United States, while AS/NZS 3678 Grade 450 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, ASTM A1008 SS Grade 80 vs AS/NZS 3678 Grade 450 is a 96.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 96.2%.

Frequently Compared With ASTM A1008 SS Grade 80:
CSA G40.21 400W ASTM A1008 SS Grade 50 AS/NZS 3679.1 300 CSA G40.21 480W AS/NZS 1595 C450 CSA G40.21 400A GOST 19281 09G2S CSA G40.21 260W ASTM A283C AS/NZS 3679.1 350 CSA G40.21 350W CSA G40.21 300W
Match Breakdown
CHEMISTRY MATCH
96.2%
MECHANICAL MATCH
No shared data
OVERALL
96.2%
Specifications
Property ASTM A1008 SS Grade 80 AS/NZS 3678 Grade 450
Standard ASTM A1008 AS/NZS 3678:2016
Category Structural Steel Structural Steel
C (%) <=0.25 max 0.2
Mn (%) <=1.65 max 1.6
Si (%) <=0.50 max 0.55
P (%) <=0.040 max 0.03
S (%) <=0.040 max 0.03
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 80 AS/NZS 3678 Grade 450
Tensile Strength 570 MPa min Not specified
Yield Strength 550 MPa min Not specified
Elongation 10% min Not specified
Typical Applications
ASTM A1008 SS Grade 80
Cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts
AS/NZS 3678 Grade 450
Heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.
Can ASTM A1008 SS Grade 80 Be Substituted With AS/NZS 3678 Grade 450?
ASTM A1008 SS Grade 80 and AS/NZS 3678 Grade 450 overlap closely enough on chemistry and mechanical properties that AS/NZS 3678 Grade 450 is often considered as a substitute for ASTM A1008 SS Grade 80 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
ASTM A1008 SS Grade 80
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3700 mm (98.43–145.67 in)
AS/NZS 3678 Grade 450
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–4200 mm (98.43–165.35 in)
On M-EX Right Now
ASTM A1008 SS Grade 80
2 active listings and RFQs →
AS/NZS 3678 Grade 450
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A1008 SS Grade 80 and AS/NZS 3678 Grade 450?
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 80 be substituted with AS/NZS 3678 Grade 450?
ASTM A1008 SS Grade 80 and AS/NZS 3678 Grade 450 overlap closely enough on chemistry and mechanical properties that AS/NZS 3678 Grade 450 is often considered as a substitute for ASTM A1008 SS Grade 80 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.