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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
- Details
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ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. The highest grade (strength level) specified in ASTM A500 is: Grade D, This grade offers the highest mechanical properties among the available grades (A, B, C, and D) in ASTM A500.
Key Requirements For ASTM A500 Grade D
Mechanical Properties
Tensile Strength:
Minimum Tensile Strength: 58ksi (400 MPa)Yield Strength:
Minimum Yield Strength: 36ksi(250MPa)Elongation:
Minimum elongation in 2 inches (50.8 mm) varies based on wall thickness and tube shape but is generally ≥ 16% for structural applications.Chemical Composition (Max % By Weight, Unless Range Is Given):
Carbon (C): ≤ 0.26%
Manganese (Mn): ≤ 1.35%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.035%
Copper (Cu): ≥ 0.20% (when copper steel is specified)
Manufacturing Process:
Tubes can be welded (electric-resistance welded, ERW) or seamless (SMLS).
Cold-forming is required to achieve mechanical properties.
Common Applications:
High-strength structural frameworks
Bridges, buildings, and construction supports
Machinery and heavy-load applications
Comparison With Other ASTM A500 Grades
Grade Tensile Strength (min, ksi) Yield Strength (min, ksi) Elongation (% in 2 in.) A 45 33 25 B 58 42 23 C 62 46 21 D(Highest) 58 36 23
Conclusion
ASTM A500 Grade D offers the highest strength among all ASTM A500 grades, making it ideal for demanding structural applications. Its high yield and tensile strength, combined with specific heat treatment requirements, ensure superior performance in heavy-duty environments .
ASTM A500 GR.D
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Keyword
- Details
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ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. The highest grade (strength level) specified in ASTM A500 is: Grade D, This grade offers the highest mechanical properties among the available grades (A, B, C, and D) in ASTM A500.
Key Requirements For ASTM A500 Grade D
Mechanical Properties
Tensile Strength:
Minimum Tensile Strength: 58ksi (400 MPa)Yield Strength:
Minimum Yield Strength: 36ksi(250MPa)Elongation:
Minimum elongation in 2 inches (50.8 mm) varies based on wall thickness and tube shape but is generally ≥ 16% for structural applications.Chemical Composition (Max % By Weight, Unless Range Is Given):
Carbon (C): ≤ 0.26%
Manganese (Mn): ≤ 1.35%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.035%
Copper (Cu): ≥ 0.20% (when copper steel is specified)
Manufacturing Process:
Tubes can be welded (electric-resistance welded, ERW) or seamless (SMLS).
Cold-forming is required to achieve mechanical properties.
Common Applications:
High-strength structural frameworks
Bridges, buildings, and construction supports
Machinery and heavy-load applications
Comparison With Other ASTM A500 Grades
Grade Tensile Strength (min, ksi) Yield Strength (min, ksi) Elongation (% in 2 in.) A 45 33 25 B 58 42 23 C 62 46 21 D(Highest) 58 36 23
Conclusion
ASTM A500 Grade D offers the highest strength among all ASTM A500 grades, making it ideal for demanding structural applications. Its high yield and tensile strength, combined with specific heat treatment requirements, ensure superior performance in heavy-duty environments .
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Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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