A516 Grade 70 Pressure Vessel Quality
(PVQ) Plate Supplier in India
On this Page
- What Is A516 Grade 70 PVQ Plate?
- A516 Grade 70 PVQ Plate Specifications
- ASTM A516 Gr 70 PVQ Plate Chemical Composition
- ASME SA 516 Grade 70 PVQ Steel Plate Mechanical Properties
- What Makes A516 Grade 70 a Pressure Vessel Quality Plate
- Where A516 Grade 70 PVQ Plate Is Used
- A516 Grade 70 PVQ Plate Delivery Condition
What is A516 Grade 70 PVQ Plate?
ASTM A516 Grade 70 plate is a pressure vessel quality carbon steel plate intended for welded pressure vessels where improved notch toughness is important, in moderate and lower temperature service. PVQ is the short form of pressure vessel quality. It means the plate is made and tested to the stricter rules that apply to pressure vessel plate, not to the rules for general structural steel.
Where the plate is dual certified, the mill certificate carries both the ASTM A516 Grade 70 and the ASME SA-516 Grade 70 designations. The same plate can then be used against an ASTM purchase specification and on an ASME Section VIII job.
A516 Grade 70 PVQ Plate Specifications
| Parameter | Value |
|---|---|
| Standard | ASTM A516 Grade 70, dual certified to ASME SA-516 Grade 70 where the mill certificate covers both |
| Form | Plate, pressure vessel quality (PVQ) |
| Condition | As-rolled up to 40 mm, which covers all ready stock. Normalized above 40 mm |
| Thickness | 3 mm to 20 mm ex-stock, up to 100 mm on order |
| Width | 1250 mm and 1500 mm |
| Length | 5000 mm and 6300 mm |
| Supply | Cut to size, no minimum order quantity |
| Certification | EN 10204:2004 Type 3.1 mill test certificate on every plate |
| Dispatch | 2 to 3 working days on stock sizes, delivery across India |
Send your plate list. We will confirm stock and price the same day.
ASTM A516 Gr 70 PVQ Plate Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C), max, up to 12.5 mm | 0.27 |
| Carbon (C), max, over 12.5 mm to 50 mm | 0.28 |
| Carbon (C), max, over 50 mm to 100 mm | 0.30 |
| Manganese (Mn), heat analysis | 0.85 to 1.20 |
| Manganese (Mn), product analysis | 0.79 to 1.30 |
| Phosphorus (P), max | 0.025 |
| Sulfur (S), max | 0.025 |
| Silicon (Si), heat analysis | 0.15 to 0.40 |
| Silicon (Si), product analysis | 0.13 to 0.45 |
ASME SA 516 Grade 70 PVQ Steel Plate Mechanical Properties
The table below lists the tensile strength, minimum yield strength and elongation requirements for ASME SA-516 Grade 70 PVQ steel plate.
| Property | Value |
|---|---|
| Tensile strength | 70 to 90 ksi (485 to 620 MPa) |
| Yield strength, min | 38 ksi (260 MPa) |
| Elongation, min | 21% in 50 mm (2 in.) or 17% in 200 mm (8 in.) |
| Density (typical, carbon steel) | 7.85 g/cm³ (0.284 lb/in³) |
Tensile and yield values are the same at every thickness. For elongation, only the gauge length matching the test specimen applies, and the requirement is reduced for plate under 8 mm. The certificate shows the figure for your thickness.
Looking for A516 Grade 70 Pressure Vessel Quality Plate
What Makes A516 Grade 70 a Pressure Vessel Quality Plate
Four requirements sit behind the pressure vessel quality label on this grade.
Killed steel
The steel is fully deoxidised before casting, so it does not gas off as it solidifies. That gives less segregation and a more uniform plate.
Fine grain practice
This is the basis for good notch toughness, which is what a vessel needs at lower temperatures.
Controlled chemistry
Phosphorus and sulfur are capped at 0.025 percent each, and the limits apply to both heat analysis and product analysis.
Full traceability
Each plate is marked and certified to its heat, so the certificate ties back to the plate on your shop floor.
Where A516 Grade 70 PVQ Plate Is Used
- Pressure vessel shells, heads and nozzle reinforcing pads.
- Storage tanks and process vessels.
- Heat exchanger shells and tube sheets.
- Separators, knock-out drums and columns in refinery and petrochemical units.
Get the best price for your thickness. Send the sizes and quantity you need.
A516 Grade 70 PVQ Plate Delivery Condition
Plate 40 mm and under is normally supplied as-rolled. All our ready stock is as-rolled. You can order it normalized or stress relieved instead. Plate over 40 mm is supplied normalized.
Impact testing is not part of the standard requirements, so it is only carried out when you call for it on the order. If you order impact testing on plate up to 40 mm, that plate has to be normalized unless you state otherwise. State the test temperature, specimen orientation and acceptance criteria on the order.
Send these with your enquiry:
- Thickness, width, length and quantity
- Delivery condition, as-rolled or normalized
- Design temperature
- Any impact testing, HIC testing or inspection requirement