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EN 10025-3 S420JR vs AS/NZS 3678 Grade 450

Strong Match — 97.7% match based on chemical composition and mechanical property overlap.

EN 10025-3 S420JR (EN 10025-3:2019) and AS/NZS 3678 Grade 450 (AS/NZS 3678:2016) are both steel grades. Both fall under the Structural Steel category. EN 10025-3 S420JR is typically used for used in bridges, heavy machinery frames, structural beams, offshore structures, and crane components., while AS/NZS 3678 Grade 450 is commonly used for heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.. EN 10025-3 S420JR is defined under European Standard (EN), originating from Europe, while AS/NZS 3678 Grade 450 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, EN 10025-3 S420JR vs AS/NZS 3678 Grade 450 is a 97.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 97.7%.

Frequently Compared With EN 10025-3 S420JR:
CSA G40.21 400A CSA G40.21 480W CSA G40.21 400W GOST 19281 09G2S CSA G40.21 260W AS/NZS 3679.1 300 CSA G40.21 300W CSA G40.21 350W AS/NZS 3679.1 350 ASTM A1008 SS Grade 50 ASTM A572 Gr.65 ASTM A283C
Match Breakdown
CHEMISTRY MATCH
97.7%
MECHANICAL MATCH
No shared data
OVERALL
97.7%
Specifications
Property EN 10025-3 S420JR AS/NZS 3678 Grade 450
Standard EN 10025-3:2019 AS/NZS 3678:2016
Category Structural Steel Structural Steel
C (%) 0.20 max max 0.2
Si (%) 0.55 max max 0.55
Mn (%) 1.70 max max 1.6
P (%) 0.030 max max 0.03
S (%) 0.030 max max 0.03
N (%) 0.015 max Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10025-3 S420JR AS/NZS 3678 Grade 450
Tensile Strength 520-680 MPa Not specified
Yield Strength 420 MPa min Not specified
Elongation 17% min Not specified
Hardness 170-220 HB Not specified
Typical Applications
EN 10025-3 S420JR
Used in bridges, heavy machinery frames, structural beams, offshore structures, and crane components.
AS/NZS 3678 Grade 450
Heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.
Key Differences
Can EN 10025-3 S420JR Be Substituted With AS/NZS 3678 Grade 450?
EN 10025-3 S420JR and AS/NZS 3678 Grade 450 overlap closely enough on chemistry and mechanical properties that AS/NZS 3678 Grade 450 is often considered as a substitute for EN 10025-3 S420JR 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
EN 10025-3 S420JR
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3500–3900 mm (137.8–153.54 in)
AS/NZS 3678 Grade 450
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–4200 mm (98.43–165.35 in)
On M-EX Right Now
EN 10025-3 S420JR
2 active listings and RFQs →
AS/NZS 3678 Grade 450
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10025-3 S420JR and AS/NZS 3678 Grade 450?
EN 10025-3 S420JR specifies N which is not specified for AS/NZS 3678 Grade 450.
Can EN 10025-3 S420JR be substituted with AS/NZS 3678 Grade 450?
EN 10025-3 S420JR and AS/NZS 3678 Grade 450 overlap closely enough on chemistry and mechanical properties that AS/NZS 3678 Grade 450 is often considered as a substitute for EN 10025-3 S420JR in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.