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

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

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

As per chemical composition, CSA G40.21 480A vs AS/NZS 3678 Grade 350WR 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 CSA G40.21 480A:
CSA G40.21 350A EN 10025-5 S355J2W ASTM A588 Grade A EN 10025-5 S355J0WP CSA G40.21 50W EN 10025-5 S355J2WP ASTM A588 JIS G3114 SMA400 CSA G40.21 260WT ASTM A588 Grade B ASTM A709 Grade HPS 70W EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
82.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property CSA G40.21 480A AS/NZS 3678 Grade 350WR
Standard CSA G40.21-13 (R2023) AS/NZS 3678:2016
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) <=0.23 <=0.20
Mn (%) <=1.60 <=1.70
Si (%) <=0.40 <=0.50
P (%) <=0.035 <=0.035
S (%) <=0.035 <=0.035
Cu (%) 0.20-0.40 0.25-0.55
Cr (%) 0.40-0.65 0.40-0.80
Ni (%) Not specified <=0.65
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property CSA G40.21 480A AS/NZS 3678 Grade 350WR
Tensile Strength 620-760 MPa 480-620 MPa
Yield Strength 480 MPa min 350 MPa min
Elongation 15% min 20% min
Impact 27J at 0°C Not specified
Typical Applications
CSA G40.21 480A
High-strength atmospheric corrosion-resistant (weathering) structural steel; heavy exposed structural members, bridge girders
AS/NZS 3678 Grade 350WR
Weather-resistant (corrosion-resistant) structural steel; exposed bridge and structural applications requiring atmospheric corrosion resistance
Key Differences
Can CSA G40.21 480A Be Substituted With AS/NZS 3678 Grade 350WR?
CSA G40.21 480A and AS/NZS 3678 Grade 350WR 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
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)
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)
On M-EX Right Now
CSA G40.21 480A
2 active listings and RFQs →
AS/NZS 3678 Grade 350WR
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between CSA G40.21 480A and AS/NZS 3678 Grade 350WR?
AS/NZS 3678 Grade 350WR specifies Ni which is not specified for CSA G40.21 480A.
Can CSA G40.21 480A be substituted with AS/NZS 3678 Grade 350WR?
CSA G40.21 480A and AS/NZS 3678 Grade 350WR 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.