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ASTM A709 Grade HPS 70W vs JIS G3114 SMA400

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

ASTM A709 Grade HPS 70W (ASTM A709) and JIS G3114 SMA400 (JIS G 3114:2022) are both steel grades. Both fall under the Structural Steel (Corten / Weathering) category. ASTM A709 Grade HPS 70W is typically used for high-performance steel (hps) with enhanced atmospheric corrosion resistance and toughness; primary bridge girders and structural members in bridge construction, while JIS G3114 SMA400 is commonly used for used in bridges, transmission towers, railway wagons, containers, and structural frameworks.. ASTM A709 Grade HPS 70W 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 A709 Grade HPS 70W vs JIS G3114 SMA400 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 ASTM A709 Grade HPS 70W:
CSA G40.21 350A EN 10025-5 S355J0WP EN 10025-5 S355J2W ASTM A588 ASTM A588 Grade A CSA G40.21 50W AS/NZS 3678 Grade 350WR EN 10025-5 S355J2WP CSA G40.21 260WT 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 ASTM A709 Grade HPS 70W JIS G3114 SMA400
Standard ASTM A709 JIS G 3114:2022
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) <=0.11 0.18 max
Mn (%) 1.10-1.35 0.60-1.40
Si (%) 0.30-0.50 0.35-0.75
P (%) <=0.020 0.035 max
S (%) <=0.006 0.035 max
Cu (%) 0.25-0.40 0.20-0.50
Cr (%) 0.45-0.70 0.30-1.25
Ni (%) 0.70-1.00 0.20-0.65
Mo (%) 0.02-0.08 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 A709 Grade HPS 70W JIS G3114 SMA400
Tensile Strength 585 MPa min 400-540 MPa
Yield Strength 485 MPa min 245 MPa min
Elongation 19% min 17% min
Hardness 170-210 HB 120-170 HB
Typical Applications
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
JIS G3114 SMA400
Used in bridges, transmission towers, railway wagons, containers, and structural frameworks.
Key Differences
Can ASTM A709 Grade HPS 70W Be Substituted With JIS G3114 SMA400?
ASTM A709 Grade HPS 70W 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 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)
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 A709 Grade HPS 70W
2 active listings and RFQs →
JIS G3114 SMA400
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A709 Grade HPS 70W and JIS G3114 SMA400?
ASTM A709 Grade HPS 70W specifies Mo which is not specified for JIS G3114 SMA400.
Can ASTM A709 Grade HPS 70W be substituted with JIS G3114 SMA400?
ASTM A709 Grade HPS 70W 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.