Post Stock Login Register

AS/NZS 3678 Grade 400 vs ASTM A283C

Related Material — 62.3% match based on chemical composition and mechanical property overlap.

AS/NZS 3678 Grade 400 (AS/NZS 3678:2016) and ASTM A283C (ASTM A283) are both steel grades. Both fall under the Structural Steel category. AS/NZS 3678 Grade 400 is typically used for heavy structural fabrication, crane booms, mining machinery, earthmoving equipment, structural columns., while ASTM A283C is commonly used for used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.. AS/NZS 3678 Grade 400 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand, while ASTM A283C is defined under ASTM International, originating from United States.

As per chemical composition, AS/NZS 3678 Grade 400 vs ASTM A283C is a 93.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 62.3%.

Frequently Compared With AS/NZS 3678 Grade 400:
AS/NZS 1595 C450 AS/NZS 3679.1 300 AS/NZS 1595 C350 AS/NZS 3679.1 350 IS 2062 E250A IS 2062 E250B0 ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80 CSA G40.21 300W ASTM A572 Gr.65 CSA G40.21 400A ASTM A572 Grade 50
Match Breakdown
CHEMISTRY MATCH
93.4%
MECHANICAL MATCH
0%
OVERALL
62.3%
Specifications
Property AS/NZS 3678 Grade 400 ASTM A283C
Standard AS/NZS 3678:2016 ASTM A283
Category Structural Steel Structural Steel
C (%) max 0.2 0.24 max
Mn (%) max 1.6 0.90 max
Si (%) max 0.55 0.40 max
P (%) max 0.03 0.035 max
S (%) max 0.03 0.040 max
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 400 ASTM A283C
Yield Strength 400 MPa min (t<=12mm) 205 MPa min
Tensile Strength ~520 MPa min (approx, equivalent to ASTM A572 Gr.60) 380-515 MPa
Elongation Not specified 23-27%
Hardness Not specified 120-170 HB
Typical Applications
AS/NZS 3678 Grade 400
Heavy structural fabrication, crane booms, mining machinery, earthmoving equipment, structural columns.
ASTM A283C
Used for structural fabrication, storage tanks, buildings, bridges, machinery bases, and welded structures.
Can AS/NZS 3678 Grade 400 Be Substituted With ASTM A283C?
AS/NZS 3678 Grade 400 and ASTM A283C 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 400
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3000–3700 mm (118.11–145.67 in)
ASTM A283C
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2900–3700 mm (114.17–145.67 in)
On M-EX Right Now
AS/NZS 3678 Grade 400
2 active listings and RFQs →
ASTM A283C
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AS/NZS 3678 Grade 400 and ASTM A283C?
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 400 be substituted with ASTM A283C?
AS/NZS 3678 Grade 400 and ASTM A283C 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.