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JIS G3114 SMA400 vs ASTM A709 Grade HPS 70W

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

JIS G3114 SMA400 (JIS G 3114:2022) and ASTM A709 Grade HPS 70W (ASTM A709) 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 A709 Grade HPS 70W is commonly used for high-performance steel (hps) with enhanced atmospheric corrosion resistance and toughness; primary bridge girders and structural members in bridge construction. JIS G3114 SMA400 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A709 Grade HPS 70W is defined under ASTM International, originating from United States.

As per chemical composition, JIS G3114 SMA400 vs ASTM A709 Grade HPS 70W is a 62.8% match. As per mechanical properties, the match is 0%. 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 CSA G40.21 50W ASTM A588 Grade B CSA G40.21 480A EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
62.8%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property JIS G3114 SMA400 ASTM A709 Grade HPS 70W
Standard JIS G 3114:2022 ASTM A709
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) 0.18 max <=0.11
Si (%) 0.35-0.75 0.30-0.50
Mn (%) 0.60-1.40 1.10-1.35
P (%) 0.035 max <=0.020
S (%) 0.035 max <=0.006
Cu (%) 0.20-0.50 0.25-0.40
Cr (%) 0.30-1.25 0.45-0.70
Ni (%) 0.20-0.65 0.70-1.00
Mo (%) Not specified 0.02-0.08
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 A709 Grade HPS 70W
Tensile Strength 400-540 MPa 585 MPa min
Yield Strength 245 MPa min 485 MPa min
Elongation 17% min 19% min
Hardness 120-170 HB 170-210 HB
Typical Applications
JIS G3114 SMA400
Used in bridges, transmission towers, railway wagons, containers, and structural frameworks.
ASTM A709 Grade HPS 70W
High-performance steel (HPS) with enhanced atmospheric corrosion resistance and toughness; primary bridge girders and structural members in bridge construction
Key Differences
Can JIS G3114 SMA400 Be Substituted With ASTM A709 Grade HPS 70W?
JIS G3114 SMA400 and ASTM A709 Grade HPS 70W 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 A709 Grade HPS 70W
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3800 mm (98.43–149.61 in)
On M-EX Right Now
JIS G3114 SMA400
2 active listings and RFQs →
ASTM A709 Grade HPS 70W
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G3114 SMA400 and ASTM A709 Grade HPS 70W?
ASTM A709 Grade HPS 70W specifies Mo which is not specified for JIS G3114 SMA400.
Can JIS G3114 SMA400 be substituted with ASTM A709 Grade HPS 70W?
JIS G3114 SMA400 and ASTM A709 Grade HPS 70W 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.