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JIS G3114 SMA400 vs ASTM A959 443

Related Material — 65% match based on chemical composition and mechanical property overlap.

JIS G3114 SMA400 (JIS G 3114:2022) and ASTM A959 443 (ASTM A959:2011) are both steel grades. JIS G3114 SMA400 is classified under Structural Steel (Corten / Weathering), while ASTM A959 443 is classified under Stainless Steel — a different category, which is worth noting alongside the chemistry match below. JIS G3114 SMA400 is typically used for used in bridges, transmission towers, railway wagons, containers, and structural frameworks., while ASTM A959 443 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). JIS G3114 SMA400 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A959 443 is defined under ASTM International, originating from United States.

As per chemical composition, JIS G3114 SMA400 vs ASTM A959 443 is a 72% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With JIS G3114 SMA400:
EN 10025-5 S355J2W AS/NZS 3678 Grade 350WR CSA G40.21 350A ASTM A588 ASTM A588 Grade A EN 10025-5 S355J0WP CSA G40.21 260WT EN 10025-5 S355J2WP ASTM A709 Grade HPS 70W CSA G40.21 50W ASTM A588 Grade B CSA G40.21 480A
Match Breakdown
CHEMISTRY MATCH
72%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property JIS G3114 SMA400 ASTM A959 443
Standard JIS G 3114:2022 ASTM A959:2011
Category Structural Steel (Corten / Weathering) Stainless Steel
C (%) 0.18 max <=0.20
Si (%) 0.35-0.75 <=1.00
Mn (%) 0.60-1.40 <=1.00
P (%) 0.035 max <=0.040
S (%) 0.035 max <=0.030
Cu (%) 0.20-0.50 0.90-1.25
Cr (%) 0.30-1.25 18.0-23.0
Ni (%) 0.20-0.65 <=0.50
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G3114 SMA400 ASTM A959 443
Tensile Strength 400-540 MPa Not specified
Yield Strength 245 MPa min Not specified
Elongation 17% min Not specified
Hardness 120-170 HB Not specified
Typical Applications
JIS G3114 SMA400
Used in bridges, transmission towers, railway wagons, containers, and structural frameworks.
ASTM A959 443
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can JIS G3114 SMA400 Be Substituted With ASTM A959 443?
JIS G3114 SMA400 and ASTM A959 443 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
JIS G3114 SMA400
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4100 mm (110.24–161.42 in)
ASTM A959 443
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On M-EX Right Now
JIS G3114 SMA400
2 active listings and RFQs →
ASTM A959 443
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Frequently Asked Questions
What is the difference between JIS G3114 SMA400 and ASTM A959 443?
Different category: JIS G3114 SMA400 is Structural Steel (Corten / Weathering), ASTM A959 443 is Stainless Steel.
Can JIS G3114 SMA400 be substituted with ASTM A959 443?
JIS G3114 SMA400 and ASTM A959 443 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.