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ASTM A588 Grade B vs JIS G3114 SMA400

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

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

As per chemical composition, ASTM A588 Grade B vs JIS G3114 SMA400 is a 72.7% match. As per mechanical properties, the match is 10.7%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With ASTM A588 Grade B:
ASTM A588 EN 10025-5 S355J2W EN 10025-5 S355J0WP CSA G40.21 260WT ASTM A588 Grade A CSA G40.21 350A CSA G40.21 50W AS/NZS 3678 Grade 350WR EN 10025-5 S355J2WP CSA G40.21 480A ASTM A709 Grade HPS 70W EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
72.7%
MECHANICAL MATCH
10.7%
OVERALL
35%
Specifications
Property ASTM A588 Grade B JIS G3114 SMA400
Standard ASTM A588 JIS G 3114:2022
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) <=0.20 0.18 max
Mn (%) 0.75-1.25 0.60-1.40
Si (%) 0.15-0.30 0.35-0.75
P (%) <=0.040 0.035 max
S (%) <=0.050 0.035 max
Cu (%) 0.20-0.40 0.20-0.50
Cr (%) 0.40-0.70 0.30-1.25
Ni (%) <=0.50 0.20-0.65
Mo (%) 0.02-0.10 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 ASTM A588 Grade B JIS G3114 SMA400
Tensile Strength 485 MPa min 400-540 MPa
Yield Strength 345 MPa min 245 MPa min
Elongation 18% min 17% min
Hardness 140-190 HB 120-170 HB
Typical Applications
ASTM A588 Grade B
High-strength low-alloy structural steel with atmospheric corrosion resistance (weathering steel); bridges, transmission/communication towers, gusset plates, exposed structural applications
JIS G3114 SMA400
Used in bridges, transmission towers, railway wagons, containers, and structural frameworks.
Key Differences
Can ASTM A588 Grade B Be Substituted With JIS G3114 SMA400?
ASTM A588 Grade B and JIS G3114 SMA400 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
ASTM A588 Grade B
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 3100–3200 mm (122.05–125.98 in)
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)
On M-EX Right Now
ASTM A588 Grade B
2 active listings and RFQs →
JIS G3114 SMA400
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A588 Grade B and JIS G3114 SMA400?
ASTM A588 Grade B specifies Mo which is not specified for JIS G3114 SMA400.
Can ASTM A588 Grade B be substituted with JIS G3114 SMA400?
ASTM A588 Grade B and JIS G3114 SMA400 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.