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ASTM A572 Grade 50 vs ASTM A572/A572M Grade 50

Strong Match — 96.2% match based on chemical composition and mechanical property overlap.

ASTM A572 Grade 50 (ASTM A572) and ASTM A572/A572M Grade 50 (ASTM A572/A572M:2018) 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 A572/A572M Grade 50 is commonly used for riveted, bolted or welded structures. ASTM A572 Grade 50 is defined under ASTM International, originating from United States, while ASTM A572/A572M Grade 50 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A572 Grade 50 vs ASTM A572/A572M Grade 50 is a 94.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 96.2%.

Frequently Compared With ASTM A572 Grade 50:
ASTM A572 Gr.65 ASTM A283C GOST 19281 09G2S 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 400A CSA G40.21 350W ASTM A1008 SS Grade 50
Match Breakdown
CHEMISTRY MATCH
94.3%
MECHANICAL MATCH
100%
OVERALL
96.2%
Specifications
Property ASTM A572 Grade 50 ASTM A572/A572M Grade 50
Standard ASTM A572 ASTM A572/A572M:2018
Category Structural Steel Structural Steel
C (%) <=0.23 <=0.23
Mn (%) <=1.35 <=1.35
Si (%) <=0.40 <=0.40
P (%) <=0.040 <=0.030
S (%) <=0.050 <=0.030
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 A572/A572M Grade 50
Tensile Strength 450 MPa min >=450 MPa
Yield Strength 345 MPa min >=345 MPa
Elongation 18% min >=18%
Hardness 137-187 HB Not specified
Condition Not specified Tension test per Table 4; one set of minimum values for all product thicknesses; Elongation is in 200 mm gauge length, 50 mm values in the tensile block
Typical Applications
ASTM A572 Grade 50
High-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication
ASTM A572/A572M Grade 50
Riveted, bolted or welded structures
Key Differences
Can ASTM A572 Grade 50 Be Substituted With ASTM A572/A572M Grade 50?
ASTM A572 Grade 50 and ASTM A572/A572M Grade 50 overlap closely enough on chemistry and mechanical properties that ASTM A572/A572M Grade 50 is often considered as a substitute for ASTM A572 Grade 50 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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 A572/A572M Grade 50
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ASTM A572 Grade 50
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ASTM A572/A572M Grade 50
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Frequently Asked Questions
What is the difference between ASTM A572 Grade 50 and ASTM A572/A572M Grade 50?
ASTM A572 Grade 50 specifies Nb, V which are not specified for ASTM A572/A572M Grade 50.
Can ASTM A572 Grade 50 be substituted with ASTM A572/A572M Grade 50?
ASTM A572 Grade 50 and ASTM A572/A572M Grade 50 overlap closely enough on chemistry and mechanical properties that ASTM A572/A572M Grade 50 is often considered as a substitute for ASTM A572 Grade 50 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.