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JIS G3114 SMA400 vs ASTM A588 Grade A

Related Material — 56.1% match based on chemical composition and mechanical property overlap.

JIS G3114 SMA400 (JIS G 3114:2022) and ASTM A588 Grade A (ASTM A588) are both steel grades. Both fall under the Structural Steel (Corten / Weathering) category. JIS G3114 SMA400 is typically used for used in bridges, transmission towers, railway wagons, containers, and structural frameworks., while ASTM A588 Grade A is commonly used for high-strength low-alloy structural steel with atmospheric corrosion resistance (weathering steel); bridges, transmission/communication towers, gusset plates, exposed structural applications. JIS G3114 SMA400 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A588 Grade A is defined under ASTM International, originating from United States.

As per chemical composition, JIS G3114 SMA400 vs ASTM A588 Grade A is a 78.8% match. As per mechanical properties, the match is 10.7%. Combined, this makes them a related material overall at 56.1%.

Frequently Compared With JIS G3114 SMA400:
EN 10025-5 S355J2W AS/NZS 3678 Grade 350WR CSA G40.21 350A ASTM A588 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 EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
78.8%
MECHANICAL MATCH
10.7%
OVERALL
56.1%
Specifications
Property JIS G3114 SMA400 ASTM A588 Grade A
Standard JIS G 3114:2022 ASTM A588
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) 0.18 max <=0.19
Si (%) 0.35-0.75 0.30-0.65
Mn (%) 0.60-1.40 0.80-1.25
P (%) 0.035 max <=0.040
S (%) 0.035 max <=0.050
Cu (%) 0.20-0.50 0.25-0.40
Cr (%) 0.30-1.25 0.40-0.65
Ni (%) 0.20-0.65 <=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 JIS G3114 SMA400 ASTM A588 Grade A
Tensile Strength 400-540 MPa 485 MPa min
Yield Strength 245 MPa min 345 MPa min
Elongation 17% min 18% min
Hardness 120-170 HB 140-190 HB
Typical Applications
JIS G3114 SMA400
Used in bridges, transmission towers, railway wagons, containers, and structural frameworks.
ASTM A588 Grade A
High-strength low-alloy structural steel with atmospheric corrosion resistance (weathering steel); bridges, transmission/communication towers, gusset plates, exposed structural applications
Can JIS G3114 SMA400 Be Substituted With ASTM A588 Grade A?
JIS G3114 SMA400 and ASTM A588 Grade A 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 A588 Grade A
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–2700 mm (98.43–106.3 in)
On M-EX Right Now
JIS G3114 SMA400
2 active listings and RFQs →
ASTM A588 Grade A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G3114 SMA400 and ASTM A588 Grade A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G3114 SMA400 be substituted with ASTM A588 Grade A?
JIS G3114 SMA400 and ASTM A588 Grade A 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.