What is A516 Grade 65 Plate?
ASTM A516 Grade 65 is a pressure vessel carbon-manganese steel plate engineered for moderate- and lower-temperature service. Featuring a minimum tensile strength of 65 ksi (450 MPa) and a minimum yield strength of 35 ksi (240 MPa), it provides a balanced combination of strength and notch toughness for welded boilers and pressure vessels.
Key Characteristics of ASTM A516 Grade 65 PVQ Plate
1
With a tensile strength range of 450–585 MPa (65–85 ksi), it reliably satisfies medium- to high-pressure design requirements.
2
Ideally suited for fabricating complex pressure-retaining structures, including ASTM A516 Grade 65 boiler plate assemblies.
3
Elongation up to 23% facilitates cold forming, bending, and shop fabrication processes.
4
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ASTM A516 Grade 65 Pressure Vessel Steel Plate Specification
| Product Name | ASTM A516 Grade 65 Pressure Vessel Steel Plate |
| Standard | ASTM A516; ASME SA516 |
| Thickness | 6-150mm |
| Width | 1500-2500mm |
| Length | 6000-12000mm |
ASTM A516 Gr65 Vessels Steel Plate Chemical Composition
| Thickness | C (max) | Mn | Si | P (max) | S (max) |
|---|---|---|---|---|---|
| ≤ 12.5 mm | 0.24% | 0.85–1.20% | 0.15–0.40% | 0.035% | 0.035% |
| > 12.5 – 50 mm | 0.26% | ||||
| > 50 – 100 mm | 0.28% | ||||
| > 100 – 205 mm | 0.29% |
ASTM A516 Gr65 Vessels Steel Plate Mechanical Property
| Property | Value |
|---|---|
| Tensile Strength | 450 – 585 MPa (65 – 85 ksi) |
| Yield Strength (min) | 240 MPa (35 ksi) |
| Elongation in 200 mm (min) | 19% |
| Elongation in 50 mm (min) | 21% |
| Max Thickness | 205 mm |
ASTM A516 Grade 65 Stock & Supply Program
| Thickness (mm) | Width (mm) | Length (mm) | Delivery Condition | Typical Availability |
|---|---|---|---|---|
| 6 – 8 | 1,500 – 2,000 | 6,000 – 8,000 | As-Rolled | In Stock |
| 10 – 16 | 2,000 – 2,500 | 8,000 – 12,000 | As-Rolled / Normalized | In Stock |
| 18 – 30 | 2,000 – 2,500 | 8,000 – 12,000 | Normalized | In Stock |
| 32 – 50 | 2,000 – 2,500 | 6,000 – 12,000 | Normalized | 1–2 Weeks |
| 52 – 100 | 1,800 – 2,500 | 6,000 – 12,000 | Normalized | 2–3 Weeks |
| 105 – 205 | 1,500 – 2,200 | 4,000 – 10,000 | Normalized | Made to Order |
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We offer cut-to-size service from parent plates. Specify your required dimensions and we will optimize nesting to minimize material waste and cost.
Quality Assurance & Certification
Order Processing Flow
📝
Inquiry
Submit specs & quantity
💰
Quote
Within 48 hours
🏭
Production
Mill rolling / stock release
🔬
Testing
MTR + 3rd party inspection
📦
Shipping
Packed & dispatched
Certification & Test Options
EN 10204 3.1 MTR: Standard mill test report included with every order
EN 10204 3.2 MTR: Available with third-party inspection (BV, SGS, TÜV, Lloyd's)
Ultrasonic Testing (UT): Per ASTM A435/A578 - specified acceptance level
Charpy V-Notch Impact: Per Supplementary Requirement S5 at agreed temperature
HIC Testing: Per NACE TM0284 for sour service (Supplementary Requirement S8)
PMI (Positive Material Identification): Available on request for material verification
ASTM A516 Grade 65 Carbon Steel Plate Typical Applications
Process Pressure Vessels
Drums, separators, and accumulators in petrochemical plants
Heat Exchangers
Shell-and-tube exchanger shells and channels
Storage Tanks
API 650 tank shell courses for moderate design pressure
Chemical Reactors
Reactor vessels and columns in chemical processing
Why Source A516 Grade 65 from Us?
As a specialized pressure vessel steel plate supplier, GNEE Steel provide ASTM A516 Grade 65 (ASME SA-516 Gr 65) with full mill traceability, consistent quality, and flexible delivery options. Our supply chain is optimized for fabricators, EPC contractors, and pressure vessel manufacturers who need certified PVQ material on schedule.
Mill-Direct Supply
Direct partnerships with qualified mills producing to ASTM A516/A516M. Eliminate intermediary markups and ensure full material traceability from melt to delivery.
EN 10204 3.1/3.2 MTR
Every plate ships with a Mill Test Report certifying chemical composition, mechanical properties, and heat treatment condition. Third-party inspection available.
Global Logistics
Container and bulk vessel shipping to any port worldwide. Export packaging per project requirements, including seaworthy wrapping and marking.
Custom Processing
Cutting to size, beveling, UT testing, and PWHT available before shipment. Reduce your workshop processing time with ready-to-weld plates.
FAQ
Does A516 Grade 65 require post-weld heat treatment? What is the temperature range?
Post-weld heat treatment (PWHT) for ASTM A516 Grade 65 is not always mandatory by the material specification itself; it depends on the thickness of the plate, the governing construction code (such as ASME Section VIII), and the service conditions. When PWHT is required or performed to relieve stress, the standard soaking temperature range is 1,100°F to 1,250°F (590°C to 680°C).
What is the minimum service temperature for A516 Grade 65?
The maximum allowable service temperature for ASTM A516 Grade 65 (ASME SA-516 Grade 65) is 1000°F (538°C) under ASME Section VIII Division 1 rules, though the absolute limit varies depending on the specific code or standard governing your application. Prolonged use above 775°F to 800°F (425°C) can risk graphitization of the carbon phase in carbon steels.
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