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ASTM A588 vs ASTM A588 Grade A

Close Alternative — 81.1% match based on chemical composition and mechanical property overlap.

ASTM A588 (ASTM A588) and ASTM A588 Grade A (ASTM A588) are both steel grades. Both fall under the Structural Steel (Corten / Weathering) category. ASTM A588 is typically used for used for bridges, railway wagons, transmission poles, architectural structures, containers, and outdoor construction., 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. ASTM A588 is defined under ASTM International, originating from United States, while ASTM A588 Grade A is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A588 vs ASTM A588 Grade A is a 96.7% match. As per mechanical properties, the match is 50%. Combined, this makes them a close alternative overall at 81.1%.

Frequently Compared With ASTM A588:
EN 10025-5 S355J2W CSA G40.21 350A AS/NZS 3678 Grade 350WR JIS G3114 SMA400 EN 10025-5 S355J0WP CSA G40.21 260WT EN 10025-5 S355J2WP CSA G40.21 50W ASTM A709 Grade HPS 70W ASTM A588 Grade B CSA G40.21 480A EN 10025-5 S235J2W
Match Breakdown
CHEMISTRY MATCH
96.7%
MECHANICAL MATCH
50%
OVERALL
81.1%
Specifications
Property ASTM A588 ASTM A588 Grade A
Standard ASTM A588 ASTM A588
Category Structural Steel (Corten / Weathering) Structural Steel (Corten / Weathering)
C (%) 0.19 max <=0.19
Mn (%) 0.80-1.25 0.80-1.25
Si (%) 0.30-0.65 0.30-0.65
Cu (%) 0.20-0.40 0.25-0.40
Cr (%) 0.40-0.70 0.40-0.65
Ni (%) 0.40 max <=0.40
P (%) 0.04 max <=0.040
S (%) 0.05 max <=0.050
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 ASTM A588 Grade A
Tensile Strength 485-630 MPa 485 MPa min
Yield Strength 345 MPa min 345 MPa min
Elongation 18-21% 18% min
Hardness 140-190 HB 140-190 HB
Typical Applications
ASTM A588
Used for bridges, railway wagons, transmission poles, architectural structures, containers, and outdoor construction.
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 ASTM A588 Be Substituted With ASTM A588 Grade A?
ASTM A588 and ASTM A588 Grade A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
ASTM A588
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)
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
ASTM A588
2 active listings and RFQs →
ASTM A588 Grade A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A588 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 ASTM A588 be substituted with ASTM A588 Grade A?
ASTM A588 and ASTM A588 Grade A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.