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ASTM A572 Grade 50 vs ASTM A1008 SS Grade 80

Related Material — 61.8% match based on chemical composition and mechanical property overlap.

ASTM A572 Grade 50 (ASTM A572) and ASTM A1008 SS Grade 80 (ASTM A1008) are both steel grades. Both fall under the Structural Steel category. ASTM A572 Grade 50 is typically used for high-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication, while ASTM A1008 SS Grade 80 is commonly used for cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts. ASTM A572 Grade 50 is defined under ASTM International, originating from United States, while ASTM A1008 SS Grade 80 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A572 Grade 50 vs ASTM A1008 SS Grade 80 is a 92.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 61.8%.

Frequently Compared With ASTM A572 Grade 50:
ASTM A572 Gr.65 GOST 19281 09G2S ASTM A283C CSA G40.21 260W CSA G40.21 300W AS/NZS 3679.1 300 AS/NZS 3679.1 350 CSA G40.21 480W CSA G40.21 400W CSA G40.21 350W CSA G40.21 400A ASTM A1008 SS Grade 50
Match Breakdown
CHEMISTRY MATCH
92.8%
MECHANICAL MATCH
0%
OVERALL
61.8%
Specifications
Property ASTM A572 Grade 50 ASTM A1008 SS Grade 80
Standard ASTM A572 ASTM A1008
Category Structural Steel Structural Steel
C (%) <=0.23 <=0.25
Mn (%) <=1.35 <=1.65
Si (%) <=0.40 <=0.50
P (%) <=0.040 <=0.040
S (%) <=0.050 <=0.040
Nb (%) <=0.05 Not specified
V (%) <=0.15 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 A572 Grade 50 ASTM A1008 SS Grade 80
Tensile Strength 450 MPa min 570 MPa min
Yield Strength 345 MPa min 550 MPa min
Elongation 18% min 10% min
Hardness 137-187 HB Not specified
Typical Applications
ASTM A572 Grade 50
High-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication
ASTM A1008 SS Grade 80
Cold-rolled high-strength structural steel sheet, higher strength grade; automotive structural/reinforcement components, cold-formed high-strength parts
Key Differences
Can ASTM A572 Grade 50 Be Substituted With ASTM A1008 SS Grade 80?
ASTM A572 Grade 50 and ASTM A1008 SS Grade 80 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 A572 Grade 50
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2800–4600 mm (110.24–181.1 in)
ASTM A1008 SS Grade 80
Plate → (2 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2500–3700 mm (98.43–145.67 in)
On M-EX Right Now
ASTM A572 Grade 50
4 active listings and RFQs →
ASTM A1008 SS Grade 80
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A572 Grade 50 and ASTM A1008 SS Grade 80?
ASTM A572 Grade 50 specifies Nb, V which are not specified for ASTM A1008 SS Grade 80.
Can ASTM A572 Grade 50 be substituted with ASTM A1008 SS Grade 80?
ASTM A572 Grade 50 and ASTM A1008 SS Grade 80 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.