SA 516 Gr 70 Plate Thickness availability

SA 516 Gr 70 Plate Thickness Availability

SA 516 Gr 70 plate thickness availability is a key consideration for engineers designing pressure vessels, boilers, and storage tanks for moderate and lower-temperature service. Specified under ASME SA-516 (identical to ASTM A516 Grade 70), this carbon steel grade offers high strength and toughness, with plates available in a wide range of thicknesses to meet project needs. This article details the thickness availability of SA 516 Gr 70, along with chemical composition, mechanical properties, and comparisons to related grades like ASME SA 516 Gr 65, ASME SA 516 Gr 60, and ASME SA 516 Gr 55. For more details, visit our ASME SA 516 Gr 70 steel plate.

SA 516 Gr 70 Plate Thickness Availability

The thickness availability of SA 516 Gr 70 is governed by ASME SA-516, which specifies plates up to 4 inches (100 mm) in thickness for standard production. However, custom thicknesses are available up to 200 mm or more through specialized rolling. Key details:

• Standard Thickness Range: 3 mm to 100 mm (0.118 inches to 4 inches).
• Common Availability:
  • Thin plates (3-20 mm): Widely available for light-pressure vessels and tanks.
  • Medium plates (20-50 mm): Common for boilers and moderate-pressure applications.
  • Thick plates (50-100 mm): Standard for high-pressure vessels.
  • Custom Thick Plates (>100 mm): Up to 200 mm or 300 mm available upon request for large-scale projects.
• Plate Widths: Up to 3,000 mm (118 inches).
• Plate Lengths: Up to 12,000 mm (39.4 feet), with custom lengths possible.
• Processing for Thickness: Plates >1.5 inches (38 mm) are normalized to ensure fine-grain structure and toughness.

Availability depends on suppliers like Gangsteel, which stocks a wide range for global delivery. For thicknesses beyond 100 mm, contact for custom rolling.

Chemical Composition

The chemical composition of SA 516 Gr 70 supports its use across thicknesses:

Carbon Equivalent (CEV): Typically ≤0.43%, calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring weldability for thick plates.

Mechanical Properties

Mechanical properties vary slightly with thickness:

• Yield Strength: ≥260 MPa for ≤25 mm, decreasing to 235 MPa for >100 mm.
• Tensile Strength: 485-620 MPa across thicknesses.
• Elongation: ≥27% for ≤25 mm, supporting formability.
• Impact Toughness: ≥27 J at -46°C for >13 mm, ensuring low-temperature reliability.

Comparison with Other SA 516 Grades

Key Difference: SA 516 Gr 70 has the widest thickness availability up to 200 mm for custom orders, with the highest strength among SA 516 grades, ideal for high-pressure, thick-plate applications.

Welding and Heat Treatment

SA 516 Gr 70 is weldable across thicknesses:

• Welding: Compatible with SMAW, GMAW, SAW per ASME Section IX. Preheating (149-204°C for >38 mm) prevents cracking; PWHT (593-649°C) for stress relief in thick sections.
• Consumables: E7018 electrodes for SMAW; ER70S-6 wire for GMAW.

Low carbon content ensures robust welds for thick plates.

Applications

SA 516 Gr 70 is used in:

• Pressure Vessels: Boilers and tanks for -46°C to 343°C service.
• Offshore Structures: Cold marine applications with impact toughness.
• Petrochemical Tanks: Low-temperature liquid storage (e.g., LNG).

Explore ASME SA 516 Gr 65 for slightly lower strength needs.

Why Choose Gangsteel?

Gangsteel supplies SA 516 Gr 70:

• Inventory: Extensive stock in China.
• Thickness Availability: 6-200 mm (custom up to 300 mm).
• Widths: Up to 3000 mm.
• Delivery: 7-30 days globally.
• Certifications: ASME SA-516, EN 10204 3.1/3.2, UT testing, ABS/LR/BV/DNV approvals.
• Processing: Cutting, rolling, bending.

Contact us for ASME SA 516 Gr 70 steel plate.

FAQ

What is the plate thickness availability of SA 516 Gr 70?
SA 516 Gr 70 is available in thicknesses up to 100 mm (4 inches) standard, with custom availability up to 200-300 mm for high-pressure vessels.

How does SA 516 Gr 70 thickness affect properties?
SA 516 Gr 70 yield strength decreases from 260 MPa (≤25 mm) to 235 MPa (>100 mm), but tensile strength (485-620 MPa) remains consistent across thicknesses.

What is the standard thickness range for SA 516 Gr 70?
The standard thickness range for SA 516 Gr 70 is 3-100 mm, with plates >38 mm normalized for toughness, suitable for pressure vessels.

How does SA 516 Gr 70 compare to ASME SA 516 Gr 65 in thickness?
SA 516 Gr 70 and Gr 65 share the same thickness availability up to 100 mm standard, but Gr 70 has higher strength (260 MPa yield vs 240 MPa) for thicker sections.

Is SA 516 Gr 70 available in custom thicknesses?
Yes, SA 516 Gr 70 is available in custom thicknesses up to 200-300 mm, with normalization for >38 mm, for large-scale pressure vessel projects.

What certifications for SA 516 Gr 70 thickness?
SA 516 Gr 70 thicknesses come with ASME SA-516 certification, EN 10204 3.1/3.2, and UT testing for all sizes, ensuring quality across availability.