Post Stock Login Register

JIS G3114 SMA400 vs ASTM A588 Grade B

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

JIS G3114 SMA400 (JIS G 3114:2022) and ASTM A588 Grade B (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 B 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 B is defined under ASTM International, originating from United States.

As per chemical composition, JIS G3114 SMA400 vs ASTM A588 Grade B 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 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 CSA G40.21 480A EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
72.7%
MECHANICAL MATCH
10.7%
OVERALL
35%
Specifications
Property JIS G3114 SMA400 ASTM A588 Grade B
Standard JIS G 3114:2022 ASTM A588
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) 0.18 max <=0.20
Si (%) 0.35-0.75 0.15-0.30
Mn (%) 0.60-1.40 0.75-1.25
P (%) 0.035 max <=0.040
S (%) 0.035 max <=0.050
Cu (%) 0.20-0.50 0.20-0.40
Cr (%) 0.30-1.25 0.40-0.70
Ni (%) 0.20-0.65 <=0.50
Mo (%) Not specified 0.02-0.10
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 B
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 B
High-strength low-alloy structural steel with atmospheric corrosion resistance (weathering steel); bridges, transmission/communication towers, gusset plates, exposed structural applications
Key Differences
Can JIS G3114 SMA400 Be Substituted With ASTM A588 Grade B?
JIS G3114 SMA400 and ASTM A588 Grade B 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 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)
On M-EX Right Now
JIS G3114 SMA400
2 active listings and RFQs →
ASTM A588 Grade B
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G3114 SMA400 and ASTM A588 Grade B?
ASTM A588 Grade B specifies Mo which is not specified for JIS G3114 SMA400.
Can JIS G3114 SMA400 be substituted with ASTM A588 Grade B?
JIS G3114 SMA400 and ASTM A588 Grade B 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.