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AS/NZS 1595 C450 vs CSA G40.21 400A

Related Material — 63.3% match based on chemical composition and mechanical property overlap.

AS/NZS 1595 C450 (AS/NZS 1595:1998) and CSA G40.21 400A (CSA G40.21-13 (R2023)) are both steel grades. Both fall under the Structural Steel category. AS/NZS 1595 C450 is typically used for higher-strength cold-rolled structural steel sheet; roll-forming, purlins, high-strength cold-formed sections, 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 1595 C450 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 1595 C450 vs CSA G40.21 400A is a 94.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 63.3%.

Frequently Compared With AS/NZS 1595 C450:
ASTM A1008 SS Grade 50 CSA G40.21 400W CSA G40.21 480W AS/NZS 3679.1 350 CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 350W GOST 19281 09G2S ASTM A1008 SS Grade 80 CSA G40.21 300W ASTM A572 Gr.65 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
94.9%
MECHANICAL MATCH
0%
OVERALL
63.3%
Specifications
Property AS/NZS 1595 C450 CSA G40.21 400A
Standard AS/NZS 1595:1998 CSA G40.21-13 (R2023)
Category Structural Steel Structural Steel
C (%) <=0.22 <=0.23
Mn (%) <=1.60 <=1.60
Si (%) <=0.50 <=0.40
P (%) <=0.040 <=0.035
S (%) <=0.040 <=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 1595 C450 CSA G40.21 400A
Tensile Strength 500 MPa min 520-670 MPa
Yield Strength 450 MPa min 400 MPa min
Elongation 12% min 17% min
Impact Not specified 27J at 0°C
Typical Applications
AS/NZS 1595 C450
Higher-strength cold-rolled structural steel sheet; roll-forming, purlins, high-strength cold-formed sections
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 1595 C450 Be Substituted With CSA G40.21 400A?
AS/NZS 1595 C450 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 1595 C450
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–2500 mm (98.43–98.43 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 1595 C450
2 active listings and RFQs →
CSA G40.21 400A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 1595 C450 and CSA G40.21 400A?
CSA G40.21 400A specifies Cu which is not specified for AS/NZS 1595 C450.
Can AS/NZS 1595 C450 be substituted with CSA G40.21 400A?
AS/NZS 1595 C450 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.