A516 Pressure Vessel Steel Plate

‌Material Overview & Competitive Advantages‌ ASTM A516 specifies ‌normalized carbon-manganese steel plates‌ for ‌-45°C to 345°C pressure vessels‌ in oil/gas and cryogenic storage. With tensile strengths from ‌380 MPa (Gr.55) to 620 MPa (Gr.70)‌, these plates meet ASME SA-516 requirements for LPG tanks and heat exchangers. ‌Key Benefits‌: ‌Cryogenic Performance‌: 40J impact energy at -45°C (Gr.70). ‌Global Equivalents‌: EN 10028-2 P355GH (Gr.70), JIS G3115 SPV490 (Gr.65). ‌Fabrication Efficiency‌: 25% faster weld speeds vs. alloy steels.
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Product Introduction

ASTM A516 Gr.55/60/65/70 Pressure Vessel Steel: ASME-Certified Low-Temperature Solution with Enhanced Notch Toughness


‌Material Overview & Competitive Advantages‌

ASTM A516 specifies ‌normalized carbon-manganese steel plates‌ for ‌-45°C to 345°C pressure vessels‌ in oil/gas and cryogenic storage. With tensile strengths from ‌380 MPa (Gr.55) to 620 MPa (Gr.70)‌, these plates meet ASME SA-516 requirements for LPG tanks and heat exchangers.

‌Key Benefits‌:

  • ‌Cryogenic Performance‌: 40J impact energy at -45°C (Gr.70).
  • ‌Global Equivalents‌: EN 10028-2 P355GH (Gr.70), JIS G3115 SPV490 (Gr.65).
  • ‌Fabrication Efficiency‌: 25% faster weld speeds vs. alloy steels.

‌Technical Specifications‌

‌1. Chemical Composition (ASME SA-516 Standard)‌

Grade C (≤) Mn (≤) CEV* Thickness Range
Gr.55 0.25% 1.30% 0.43 6–250mm
Gr.60 0.25% 1.20% 0.47 6–300mm
Gr.65 0.28% 1.20% 0.53 6–350mm
Gr.70 0.30% 1.20% 0.58 6–400mm
*CEV = C + Mn/6 + (Cr + Mo + V)/5

‌2. Mechanical Properties‌

Grade Tensile (MPa) Yield (MPa) Elongation (%) Impact (-45°C)
Gr.55 380–515 205 27 34J
Gr.60 415–550 220 25 39J
Gr.65 450–585 240 23 45J
Gr.70 485–620 260 21 52J

‌Physical Properties‌:

  • Density: 7.80 g/cm³ (0.282 lb/in³)
  • Thermal Conductivity: 49.8 W/m·K (20–200°C)

‌Production & Fabrication‌

‌1. Manufacturing Processes‌

  • ‌Normalizing‌: 900–925°C × 1h/25mm (mandatory for Gr.70).
  • ‌Post-Forming Treatment‌: 595–650°C stress relief (ASME VIII Div.1).

‌2. Surface Treatments‌

Process Technical Standard Application Example
Galvanizing ASTM A123 (70µm) Coastal water tanks
PTFE Coating ASME RTP-1 Chemical reactors

‌Industrial Applications‌

‌1. Energy Storage‌

  • ‌LPG Spherical Tanks‌: Gr.70 plates (thickness 30–80mm).
  • ‌CNG Transport Vessels‌: Gr.65 seamless shells (NACE MR0175).

‌2. Process Industry‌

Component Material Grade Operational Limits
Ammonia Condensers Gr.60 -33°C @ 2.5MPa
CO2 Scrubbers Gr.55 150°C @ 1.8MPa

‌3. Power Generation‌

  • ‌Deaerator Vessels‌: Gr.60 forged heads (PWHT required).
  • ‌Feedwater Heaters‌: Gr.65 U-tube bundles (ASME TEMA).

‌Quality Assurance‌

  1. ‌Testing Protocols‌:
    • Ultrasonic testing: SA-578 Level II for thickness >50mm.
    • Hardness control: HB 120–190 (Gr.55), HB 150–220 (Gr.70).
  2. ‌Certifications‌:
    • ASME U Stamp + EN 10204 3.1 Certificate.
    • ISO 3834-2 Welding Compliance.

‌Delivery & Storage‌

  • ‌Dimensions‌:
    • Width: 1,500–3,500mm (max length: 18m).
    • Thickness tolerance: ±0.3mm (cold-rolled), ±0.8% (hot-rolled).
  • ‌Packaging‌: VCI film + desiccant (36-month corrosion protection).

‌Welding Advisory‌: Use E7018-G electrodes with 80–150°C preheat for Gr.70*

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