View allProduct
View allHOT News
-
Chemical composition of SA302 Gr.C steel plate:
Carbon (C): ≤0.25% (requirements vary by thickness; e.g., ≤0.20% for thickness ≤25mm)2026-09-25 -
SA302 Gr.B Steel Plate Standards and Origins:
SA302 Gr.B falls under the ASTM A302/A302M standard, jointly established by the American Society of Mechanical Engineers (ASME) and the American Society for Testing and Materials (ASTM).2026-09-18 -
In industrial sectors such as petroleum refining, chemical synthesis, and power generation, pressure vessels often require stable, long-term operation under conditions involving moderate temperatures, high pressures, and even corrosive media.2026-09-11
-
Standard Classification: Complies with ASME SA302/ASTM A302 specifications, applicable to manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates for pressure vessels.2026-09-04
-
Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
Need advice, or a quote?
Chemical composition of SA302 Gr.C steel plate:
Carbon (C): ≤0.25% (requirements vary by thickness; e.g., ≤0.20% for thickness ≤25mm)
Silicon (Si): 0.15%–0.40%
Manganese (Mn): 1.07%–1.62% (some sources cite 1.15%–1.50%)
Phosphorus (P): ≤0.025%
Sulfur (S): ≤0.025%
Nickel (Ni): 0.40%–0.70%
Molybdenum (Mo): 0.45%–0.60%
Mechanical properties of SA302 Gr.C steel:
Tensile strength: 550–690 MPa
Yield strength: ≥345 MPa (some sources cite ≥415 MPa or ≥275 MPa, depending on specific test conditions and standards)
Elongation: ≥17%–18% (200mm gauge length); ≥20%–22% (50mm gauge length)
Impact toughness: At -20°C, transverse impact energy ≥34 J, longitudinal impact energy ≥47 J (some sources specify passing a Charpy impact test at -29°C, with specific values depending on thickness)
Properties of SA302 Gr.C Steel Plate:
High-temperature strength: SA302 Gr.C steel plate exhibits excellent strength at medium to high temperatures, making it suitable for high-pressure vessels.
Corrosion resistance: The addition of nickel and molybdenum provides excellent corrosion resistance in acidic, alkaline, and hydrogen-containing environments.
Weldability: It supports conventional welding methods (such as manual arc welding and submerged arc welding) and yields high-strength welded joints.
Workability: It possesses good plasticity and workability, facilitating cutting, bending, and forming operations.
Delivery condition for SA302 Gr.C steel: Typically delivered in a normalized or tempered condition to ensure microstructural uniformity and consistent performance.
Flaw detection requirements for SA302 Gr.C steel: Ultrasonic testing can be performed upon request, in compliance with standards such as GB/T 2970 and ASME SA-578.
Carbon (C): ≤0.25% (requirements vary by thickness; e.g., ≤0.20% for thickness ≤25mm)
Silicon (Si): 0.15%–0.40%
Manganese (Mn): 1.07%–1.62% (some sources cite 1.15%–1.50%)
Phosphorus (P): ≤0.025%
Sulfur (S): ≤0.025%
Nickel (Ni): 0.40%–0.70%
Molybdenum (Mo): 0.45%–0.60%
Mechanical properties of SA302 Gr.C steel:
Tensile strength: 550–690 MPa
Yield strength: ≥345 MPa (some sources cite ≥415 MPa or ≥275 MPa, depending on specific test conditions and standards)
Elongation: ≥17%–18% (200mm gauge length); ≥20%–22% (50mm gauge length)
Impact toughness: At -20°C, transverse impact energy ≥34 J, longitudinal impact energy ≥47 J (some sources specify passing a Charpy impact test at -29°C, with specific values depending on thickness)
Properties of SA302 Gr.C Steel Plate:
High-temperature strength: SA302 Gr.C steel plate exhibits excellent strength at medium to high temperatures, making it suitable for high-pressure vessels.
Corrosion resistance: The addition of nickel and molybdenum provides excellent corrosion resistance in acidic, alkaline, and hydrogen-containing environments.
Weldability: It supports conventional welding methods (such as manual arc welding and submerged arc welding) and yields high-strength welded joints.
Workability: It possesses good plasticity and workability, facilitating cutting, bending, and forming operations.
Delivery condition for SA302 Gr.C steel: Typically delivered in a normalized or tempered condition to ensure microstructural uniformity and consistent performance.
Flaw detection requirements for SA302 Gr.C steel: Ultrasonic testing can be performed upon request, in compliance with standards such as GB/T 2970 and ASME SA-578.