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ASTM A572 Gr.65 vs ASTM A572 Grade 50

Related Material — 68.4% match based on chemical composition and mechanical property overlap.

ASTM A572 Gr.65 (ASTM A572) and ASTM A572 Grade 50 (ASTM A572) are both steel grades. Both fall under the Structural Steel category. ASTM A572 Gr.65 is typically used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members., while ASTM A572 Grade 50 is commonly used for high-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication. ASTM A572 Gr.65 is defined under ASTM International, originating from United States, while ASTM A572 Grade 50 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A572 Gr.65 vs ASTM A572 Grade 50 is a 100% match. As per mechanical properties, the match is 5.1%. Combined, this makes them a related material overall at 68.4%.

Frequently Compared With ASTM A572 Gr.65:
ASTM A283C CSA G40.21 260W CSA G40.21 300W CSA G40.21 350W CSA G40.21 400W GOST 19281 09G2S AS/NZS 3679.1 300 CSA G40.21 480W AS/NZS 3679.1 350 AS/NZS 1595 C450 ASTM A1008 SS Grade 50 ASTM A1008 SS Grade 80
Match Breakdown
CHEMISTRY MATCH
100%
MECHANICAL MATCH
5.1%
OVERALL
68.4%
Specifications
Property ASTM A572 Gr.65 ASTM A572 Grade 50
Standard ASTM A572 ASTM A572
Category Structural Steel Structural Steel
C (%) 0.23 max <=0.23
Mn (%) 1.35 max <=1.35
Si (%) 0.40 max <=0.40
V (%) 0.15 max <=0.15
Nb (%) 0.05 max <=0.05
P (%) 0.040 max <=0.040
S (%) 0.050 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 A572 Gr.65 ASTM A572 Grade 50
Tensile Strength 550-690 MPa 450 MPa min
Yield Strength 450 MPa min 345 MPa min
Elongation 18-21% 18% min
Hardness 170-220 HB 137-187 HB
Typical Applications
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
ASTM A572 Grade 50
High-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication
Can ASTM A572 Gr.65 Be Substituted With ASTM A572 Grade 50?
ASTM A572 Gr.65 and ASTM A572 Grade 50 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 Gr.65
Plate → (4 listings)
Thickness: 10–10 mm (0.39–0.39 in)
Width: 1500–1500 mm (59.06–59.06 in)
Length: 2600–4400 mm (102.36–173.23 in)
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)
On M-EX Right Now
ASTM A572 Gr.65
4 active listings and RFQs →
ASTM A572 Grade 50
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A572 Gr.65 and ASTM A572 Grade 50?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A572 Gr.65 be substituted with ASTM A572 Grade 50?
ASTM A572 Gr.65 and ASTM A572 Grade 50 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.