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ASTM A572 Grade 50 vs ASTM A572 Gr.65

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

ASTM A572 Grade 50 (ASTM A572) and ASTM A572 Gr.65 (ASTM A572) 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 Gr.65 is commonly used for used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.. ASTM A572 Grade 50 is defined under ASTM International, originating from United States, while ASTM A572 Gr.65 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A572 Grade 50 vs ASTM A572 Gr.65 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 Grade 50:
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 80 ASTM A1008 SS Grade 50
Match Breakdown
CHEMISTRY MATCH
100%
MECHANICAL MATCH
5.1%
OVERALL
68.4%
Specifications
Property ASTM A572 Grade 50 ASTM A572 Gr.65
Standard ASTM A572 ASTM A572
Category Structural Steel Structural Steel
C (%) <=0.23 0.23 max
Mn (%) <=1.35 1.35 max
Si (%) <=0.40 0.40 max
P (%) <=0.040 0.040 max
S (%) <=0.050 0.050 max
Nb (%) <=0.05 0.05 max
V (%) <=0.15 0.15 max
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 Gr.65
Tensile Strength 450 MPa min 550-690 MPa
Yield Strength 345 MPa min 450 MPa min
Elongation 18% min 18-21%
Hardness 137-187 HB 170-220 HB
Typical Applications
ASTM A572 Grade 50
High-strength low-alloy structural steel; buildings, bridges, transmission towers, construction equipment, general structural fabrication
ASTM A572 Gr.65
Used for bridges, buildings, transmission towers, construction equipment, offshore structures, and structural members.
Can ASTM A572 Grade 50 Be Substituted With ASTM A572 Gr.65?
ASTM A572 Grade 50 and ASTM A572 Gr.65 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 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)
On M-EX Right Now
ASTM A572 Grade 50
4 active listings and RFQs →
ASTM A572 Gr.65
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A572 Grade 50 and ASTM A572 Gr.65?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A572 Grade 50 be substituted with ASTM A572 Gr.65?
ASTM A572 Grade 50 and ASTM A572 Gr.65 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.