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ASTM A588 vs ASTM A959 443

Related Material — 65% match based on chemical composition and mechanical property overlap.

ASTM A588 (ASTM A588) and ASTM A959 443 (ASTM A959:2011) are both steel grades. ASTM A588 is classified under Structural Steel (Corten / Weathering), while ASTM A959 443 is classified under Stainless Steel — a different category, which is worth noting alongside the chemistry match below. ASTM A588 is typically used for used for bridges, railway wagons, transmission poles, architectural structures, containers, and outdoor construction., while ASTM A959 443 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A588 is defined under ASTM International, originating from United States, while ASTM A959 443 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A588 vs ASTM A959 443 is a 74% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With ASTM A588:
EN 10025-5 S355J2W CSA G40.21 350A ASTM A588 Grade A 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
Match Breakdown
CHEMISTRY MATCH
74%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property ASTM A588 ASTM A959 443
Standard ASTM A588 ASTM A959:2011
Category Structural Steel (Corten / Weathering) Stainless Steel
C (%) 0.19 max <=0.20
Mn (%) 0.80-1.25 <=1.00
Si (%) 0.30-0.65 <=1.00
Cu (%) 0.20-0.40 0.90-1.25
Cr (%) 0.40-0.70 18.0-23.0
Ni (%) 0.40 max <=0.50
P (%) 0.04 max <=0.040
S (%) 0.05 max <=0.030
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 A959 443
Tensile Strength 485-630 MPa Not specified
Yield Strength 345 MPa min Not specified
Elongation 18-21% Not specified
Hardness 140-190 HB Not specified
Typical Applications
ASTM A588
Used for bridges, railway wagons, transmission poles, architectural structures, containers, and outdoor construction.
ASTM A959 443
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A588 Be Substituted With ASTM A959 443?
ASTM A588 and ASTM A959 443 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
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 A959 443
No active listings currently.
On M-EX Right Now
ASTM A588
2 active listings and RFQs →
ASTM A959 443
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A588 and ASTM A959 443?
Different category: ASTM A588 is Structural Steel (Corten / Weathering), ASTM A959 443 is Stainless Steel.
Can ASTM A588 be substituted with ASTM A959 443?
ASTM A588 and ASTM A959 443 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.