A515 Pressure Vessel Steel Plate

‌Material Overview & Core Advantages‌ ASTM A515 specifies ‌carbon steel plates‌ for ‌500°C high-temperature pressure vessels‌ in power generation and hydrocarbon processing. With tensile strengths ranging from ‌415 MPa (Grade 60) to 620 MPa (Grade 70)‌, these normalized steels meet ASME SA-515 requirements for boiler drums and heat exchangers. ‌Key Benefits‌: ‌Cost Efficiency‌: 35% lower material cost vs. chromium-moly alloys. ‌Global Equivalents‌: EN 10028-2 P265GH (Grade 60), JIS G3103 SB480 (Grade 70). ‌Weldability‌: 50% faster deposition rates with E7018 electrodes.

ASTM A515 Grade 60/65/70 Carbon Steel Plate

ASME-Certified High-Temperature Vessel Solution‌


‌Material Overview & Core Advantages‌

ASTM A515 specifies ‌carbon steel plates‌ for ‌500°C high-temperature pressure vessels‌ in power generation and hydrocarbon processing. With tensile strengths ranging from ‌415 MPa (Grade 60) to 620 MPa (Grade 70)‌, these normalized steels meet ASME SA-515 requirements for boiler drums and heat exchangers.

‌Key Benefits‌:

  • ‌Cost Efficiency‌: 35% lower material cost vs. chromium-moly alloys.
  • ‌Global Equivalents‌: EN 10028-2 P265GH (Grade 60), JIS G3103 SB480 (Grade 70).
  • ‌Weldability‌: 50% faster deposition rates with E7018 electrodes.

‌Technical Specifications‌

‌1. Chemical Composition (ASME SA-515 Standard)‌

Grade C Range Mn ≥ CEV* Max Thickness
Grade 60 0.24–0.31% 0.98% 0.43 150mm
Grade 65 0.28–0.33% 0.98% 0.47 200mm
Grade 70 0.31–0.35% 1.30% 0.53 250mm
*CEV = C + (Mn)/6 + (Cr + Mo + V)/5

‌2. Mechanical Properties‌

Grade Tensile (MPa) Yield (MPa) Elongation (%) Impact (-30°C)
Grade 60 415–550 220 25 27 J
Grade 65 450–585 240 23 32 J
Grade 70 485–620 260 21 35 J

‌Physical Properties‌:

  • Density: 7.80 g/cm³ (0.282 lb/in³)
  • Thermal Conductivity: 46.8 W/m·K (20–400°C)

‌Production & Fabrication‌

‌1. Manufacturing Methods‌

  • ‌Normalizing‌: 890–940°C × 1h/25mm (mandatory for Grade 70).
  • ‌Post-Weld Heat Treatment‌: 595–650°C × 1hr/25mm (ASME VIII).

‌2. Surface Treatments‌

Process Technical Parameters Industry Use Case
Pickling HNO3/HF acid bath (ASTM A380) Food processing tanks
Metal Spraying 150µm Al coating (ISO 2063) Coastal power plants

‌Industrial Applications‌

‌1. Power Generation‌

  • ‌Boiler Drums‌: Grade 65 plates (thickness 40–120mm, PWHT required).
  • ‌Steam Piping‌: Grade 70 seamless tubes (ASME B36.10).

‌2. Oil Refining‌

Component Material Grade Operational Limits
Fractionation Towers Grade 60 380°C @ 6MPa
Coker Drums Grade 70 450°C @ 3.5MPa

‌3. Chemical Processing‌

  • ‌Ammonia Reactors‌: Grade 65 forged heads (HIC tested).
  • ‌Sulfuric Acid Coolers‌: Grade 60 clad plates (ASME Section IX).

‌Quality Assurance‌

  1. ‌Testing Protocols‌:
    • Ultrasonic testing (SA-578 Level II for thickness >50mm).
    • Hardness control: HB 120–190 (Grade 60), HB 140–210 (Grade 70).
  2. ‌Certifications‌:
    • ASME U2 Stamp + EN 10204 3.1 Certificate.
    • ISO 3834-2 Welding Quality Management.

‌Delivery & Storage‌

  • ‌Dimensions‌:
    • Width: 1,500–3,500mm (max length: 15m).
    • Thickness tolerance: ±0.25mm (cold-rolled), ±0.7% (hot-rolled).
  • ‌Packaging‌: VCI film + desiccant packs (18-month shelf life).

‌Welding Advisory‌: Use E7018-G electrodes with 80–120°C preheat for Grade 70*

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