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AS/NZS 3678 Grade 350WR vs CSA G40.21 480A

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 350WR (AS/NZS 3678:2016) and CSA G40.21 480A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel (Corten / Weathering) category. AS/NZS 3678 Grade 350WR is typically used for weather-resistant (corrosion-resistant) structural steel; exposed bridge and structural applications requiring atmospheric corrosion resistance, while CSA G40.21 480A is commonly used for high-strength atmospheric corrosion-resistant (weathering) structural steel; heavy exposed structural members, bridge girders. AS/NZS 3678 Grade 350WR is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while CSA G40.21 480A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, AS/NZS 3678 Grade 350WR vs CSA G40.21 480A is a 82.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With AS/NZS 3678 Grade 350WR:
EN 10025-5 S355J0WP CSA G40.21 350A ASTM A588 JIS G3114 SMA400 EN 10025-5 S355J2W EN 10025-5 S355J2WP CSA G40.21 50W ASTM A588 Grade A CSA G40.21 260WT ASTM A709 Grade HPS 70W ASTM A588 Grade B EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
82.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property AS/NZS 3678 Grade 350WR CSA G40.21 480A
Standard AS/NZS 3678:2016 CSA G40.21-13 (R2023)
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) <=0.20 <=0.23
Mn (%) <=1.70 <=1.60
Si (%) <=0.50 <=0.40
P (%) <=0.035 <=0.035
S (%) <=0.035 <=0.035
Cu (%) 0.25-0.55 0.20-0.40
Cr (%) 0.40-0.80 0.40-0.65
Ni (%) <=0.65 Not specified
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 350WR CSA G40.21 480A
Tensile Strength 480-620 MPa 620-760 MPa
Yield Strength 350 MPa min 480 MPa min
Elongation 20% min 15% min
Impact Not specified 27J at 0°C
Typical Applications
AS/NZS 3678 Grade 350WR
Weather-resistant (corrosion-resistant) structural steel; exposed bridge and structural applications requiring atmospheric corrosion resistance
CSA G40.21 480A
High-strength atmospheric corrosion-resistant (weathering) structural steel; heavy exposed structural members, bridge girders
Key Differences
Can AS/NZS 3678 Grade 350WR Be Substituted With CSA G40.21 480A?
AS/NZS 3678 Grade 350WR and CSA G40.21 480A share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
AS/NZS 3678 Grade 350WR
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–2800 mm (98.43–110.24 in)
CSA G40.21 480A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3400 mm (98.43–133.86 in)
On M-EX Right Now
AS/NZS 3678 Grade 350WR
2 active listings and RFQs →
CSA G40.21 480A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 350WR and CSA G40.21 480A?
AS/NZS 3678 Grade 350WR specifies Ni which is not specified for CSA G40.21 480A.
Can AS/NZS 3678 Grade 350WR be substituted with CSA G40.21 480A?
AS/NZS 3678 Grade 350WR and CSA G40.21 480A share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.