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AS/NZS 3678 Grade 350L0 vs CSA G40.21 400A

Related Material — 62.4% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 350L0 (AS/NZS 3678:2016) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. AS/NZS 3678 Grade 350L0 is typically used for refrigerated storage structures, cold climate construction, lng facility structural steel, antarctic research stations., while CSA G40.21 400A is commonly used for atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed. AS/NZS 3678 Grade 350L0 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while CSA G40.21 400A is defined under Canadian Standards Association (CSA), originating from Canada.

As per chemical composition, AS/NZS 3678 Grade 350L0 vs CSA G40.21 400A is a 93.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 62.4%.

Frequently Compared With AS/NZS 3678 Grade 350L0:
AS/NZS 1595 C350 AS/NZS 1595 C450 AS/NZS 3679.1 300 AS/NZS 3679.1 350 ASTM A1008 SS Grade 80 CSA G40.21 300W GOST 19281 09G2S CSA G40.21 260W ASTM A1008 SS Grade 50 ASTM A572 Gr.65 ASTM A572 Grade 50 CSA G40.21 350W
Match Breakdown
CHEMISTRY MATCH
93.7%
MECHANICAL MATCH
0%
OVERALL
62.4%
Specifications
Property AS/NZS 3678 Grade 350L0 CSA G40.21 400A
Standard AS/NZS 3678:2016 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) max 0.2 <=0.23
Mn (%) max 1.6 <=1.60
Si (%) max 0.55 <=0.40
P (%) max 0.03 <=0.035
S (%) max 0.03 <=0.035
Cu (%) Not specified 0.20-0.40
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 350L0 CSA G40.21 400A
Yield Strength 350 MPa min 400 MPa min
Note L0 designation: low-temperature Charpy impact tested Not specified
Tensile Strength Not specified 520-670 MPa
Elongation Not specified 17% min
Impact Not specified 27J at 0°C
Typical Applications
AS/NZS 3678 Grade 350L0
Refrigerated storage structures, cold climate construction, LNG facility structural steel, Antarctic research stations.
CSA G40.21 400A
Atmospheric corrosion-resistant (weathering) structural steel; exposed bridge girders and structural members where high strength and weathering resistance are both needed
Key Differences
Can AS/NZS 3678 Grade 350L0 Be Substituted With CSA G40.21 400A?
AS/NZS 3678 Grade 350L0 and CSA G40.21 400A 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 350L0
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3000 mm (98.43–118.11 in)
CSA G40.21 400A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4200 mm (110.24–165.35 in)
On M-EX Right Now
AS/NZS 3678 Grade 350L0
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 350L0 and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for AS/NZS 3678 Grade 350L0.
Can AS/NZS 3678 Grade 350L0 be substituted with CSA G40.21 400A?
AS/NZS 3678 Grade 350L0 and CSA G40.21 400A 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.