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JIS G3131 SPHC vs AS/NZS 3678 Grade 450

Strong Match — 86.8% match based on chemical composition and mechanical property overlap.

JIS G3131 SPHC (JIS G 3131:2010) and AS/NZS 3678 Grade 450 (AS/NZS 3678:2016) are both steel grades. Both fall under the Structural Steel category. JIS G3131 SPHC is typically used for used in automotive parts, welded tubes, drums, furniture, brackets, and sheet metal fabrications., while AS/NZS 3678 Grade 450 is commonly used for heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.. JIS G3131 SPHC is defined under Japanese Industrial Standards (JIS), originating from Japan, while AS/NZS 3678 Grade 450 is defined under Australian/New Zealand Standard (AS/NZS), originating from Australia/New Zealand.

As per chemical composition, JIS G3131 SPHC vs AS/NZS 3678 Grade 450 is a 86.8% 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 86.8%.

Frequently Compared With JIS G3131 SPHC:
CSA G40.21 480W CSA G40.21 300W CSA G40.21 260W ASTM A1008 SS Grade 50 AS/NZS 3679.1 300 CSA G40.21 400A CSA G40.21 400W CSA G40.21 350W GOST 19281 09G2S AS/NZS 3679.1 350 ASTM A283C ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
86.8%
MECHANICAL MATCH
No shared data
OVERALL
86.8%
Specifications
Property JIS G3131 SPHC AS/NZS 3678 Grade 450
Standard JIS G 3131:2010 AS/NZS 3678:2016
Category Structural Steel Structural Steel
C (%) 0.15 max max 0.2
Mn (%) 0.60 max max 1.6
P (%) 0.050 max max 0.03
S (%) 0.050 max max 0.03
Si (%) Not specified max 0.55
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G3131 SPHC AS/NZS 3678 Grade 450
Tensile Strength 270-410 MPa Not specified
Yield Strength 205 MPa min Not specified
Elongation 28% min Not specified
Hardness 95-130 HB Not specified
Typical Applications
JIS G3131 SPHC
Used in automotive parts, welded tubes, drums, furniture, brackets, and sheet metal fabrications.
AS/NZS 3678 Grade 450
Heavy cranes, offshore platforms, pressure vessels, structural members in high-rise construction, mining equipment.
Key Differences
Can JIS G3131 SPHC Be Substituted With AS/NZS 3678 Grade 450?
JIS G3131 SPHC 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 JIS G3131 SPHC 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
JIS G3131 SPHC
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 4000–4200 mm (157.48–165.35 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
JIS G3131 SPHC
2 active listings and RFQs →
AS/NZS 3678 Grade 450
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G3131 SPHC and AS/NZS 3678 Grade 450?
AS/NZS 3678 Grade 450 specifies Si which is not specified for JIS G3131 SPHC.
Can JIS G3131 SPHC be substituted with AS/NZS 3678 Grade 450?
JIS G3131 SPHC 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 JIS G3131 SPHC in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.