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

Strong Match — 87.3% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 350WR (AS/NZS 3678:2016) and CSA G40.21 350A (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 350A is commonly used for exposed structural steelwork, bridges, retaining walls, coastal infrastructure, architectural facades.. AS/NZS 3678 Grade 350WR is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while CSA G40.21 350A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, AS/NZS 3678 Grade 350WR vs CSA G40.21 350A is a 85.3% match. As per mechanical properties, the match is 91.2%. Combined, this makes them a strong match overall at 87.3%.

Frequently Compared With AS/NZS 3678 Grade 350WR:
EN 10025-5 S355J0WP JIS G3114 SMA400 ASTM A588 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 CSA G40.21 480A ASTM A588 Grade B EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
85.3%
MECHANICAL MATCH
91.2%
OVERALL
87.3%
Specifications
Property AS/NZS 3678 Grade 350WR CSA G40.21 350A
Standard AS/NZS 3678:2016 CSA G40.21-13 (R2023)
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) <=0.20 max 0.19
Mn (%) <=1.70 max 1.35
Si (%) <=0.50 max 0.65
P (%) <=0.035 max 0.035
S (%) <=0.035 max 0.035
Cu (%) 0.25-0.55 0.25-0.4
Cr (%) 0.40-0.80 0.4-0.65
Ni (%) <=0.65 0.4-0.7
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 350A
Tensile Strength 480-620 MPa 480-650 MPa
Yield Strength 350 MPa min 350 MPa min
Elongation 20% min Not specified
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 350A
Exposed structural steelwork, bridges, retaining walls, coastal infrastructure, architectural facades.
Can AS/NZS 3678 Grade 350WR Be Substituted With CSA G40.21 350A?
AS/NZS 3678 Grade 350WR and CSA G40.21 350A overlap closely enough on chemistry and mechanical properties that CSA G40.21 350A is often considered as a substitute for AS/NZS 3678 Grade 350WR 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 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 350A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3300–3400 mm (129.92–133.86 in)
On M-EX Right Now
AS/NZS 3678 Grade 350WR
2 active listings and RFQs →
CSA G40.21 350A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 350WR and CSA G40.21 350A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AS/NZS 3678 Grade 350WR be substituted with CSA G40.21 350A?
AS/NZS 3678 Grade 350WR and CSA G40.21 350A overlap closely enough on chemistry and mechanical properties that CSA G40.21 350A is often considered as a substitute for AS/NZS 3678 Grade 350WR in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.