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AS/NZS 1594 HA350 vs AS/NZS 3678 Grade 450

Strong Match — 100% match based on chemical composition and mechanical property overlap.

AS/NZS 1594 HA350 (AS/NZS 1594:2025) and AS/NZS 3678 Grade 450 (AS/NZS 3678:2016) are both steel grades. Both fall under the Structural Steel category. AS/NZS 1594 HA350 is typically used for automotive structural parts, trailers, agricultural equipment, general fabrication, light structural sections., while AS/NZS 3678 Grade 450 is commonly used for heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.. AS/NZS 1594 HA350 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while AS/NZS 3678 Grade 450 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, AS/NZS 1594 HA350 vs AS/NZS 3678 Grade 450 is a 100% 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 100%.

Frequently Compared With AS/NZS 1594 HA350:
AS/NZS 1595 C350 AS/NZS 1595 C450 IS 2062 E250B0 CSA G40.21 300W IS 2062 E250A AS/NZS 3679.1 350 AS/NZS 3679.1 300 ASTM A1008 SS Grade 80 ASTM A1008 SS Grade 50 CSA G40.21 400A ASTM A283C ASTM A572 Gr.65
Match Breakdown
CHEMISTRY MATCH
100%
MECHANICAL MATCH
No shared data
OVERALL
100%
Specifications
Property AS/NZS 1594 HA350 AS/NZS 3678 Grade 450
Standard AS/NZS 1594:2025 AS/NZS 3678:2016
Category Structural Steel Structural Steel
C (%) max 0.2 max 0.2
Mn (%) max 1.6 max 1.6
Si (%) max 0.55 max 0.55
P (%) max 0.03 max 0.03
S (%) max 0.03 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 AS/NZS 1594 HA350 AS/NZS 3678 Grade 450
Yield Strength 350 MPa min (AS/NZS 1594) Not specified
Typical Applications
AS/NZS 1594 HA350
Automotive structural parts, trailers, agricultural equipment, general fabrication, light structural sections.
AS/NZS 3678 Grade 450
Heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.
Can AS/NZS 1594 HA350 Be Substituted With AS/NZS 3678 Grade 450?
AS/NZS 1594 HA350 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 AS/NZS 1594 HA350 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
AS/NZS 1594 HA350
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3100–3600 mm (122.05–141.73 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
AS/NZS 1594 HA350
2 active listings and RFQs →
AS/NZS 3678 Grade 450
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 1594 HA350 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 AS/NZS 1594 HA350 be substituted with AS/NZS 3678 Grade 450?
AS/NZS 1594 HA350 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 AS/NZS 1594 HA350 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.