Alloy Steel · Plates · ASTM A387 Grade 22
ASTM A387 Grade 22 Plates
In short: ASTM A387 Grade 22 plate is used for hydroprocessing reactors, pressure vessels and boiler drums in elevated-temperature hydrogen and steam service.
- P22
- Designation
- 7.85
- density, g/cm³
- 3.1 / 3.2
- EN 10204 certificates
- 5
- P22 product forms
Why this combination
Why P22 in plates
Hydroprocessing reactor shells are classic A387 Gr 22 applications, often Class 2 normalised and tempered.
Step-cooling and toughness requirements may apply for temper embrittlement; state them on the order.
Specification
How to specify ASTM A387 Grade 22
Thickness about 3 – 150 mm (and heavier on request), widths 1,000 – 3,000 mm, lengths 2,000 – 12,000 mm; cut-to-size and profile-cut parts
- Specification
- ASTM A387 Grade 22
- Class
- Class 1 or Class 2
Sizes and weights
ASTM A387 Grade 22 sizes, weighed at 7.85 g/cm³
Other sizes on request. For general plates information, such as manufacturing routes and end finishes, see the plates guide.
| Thickness mm | kg/m² | 1,500 × 6,000 plate, kg | 2,000 × 6,000 plate, kg |
|---|---|---|---|
| 3 | 23.5 | 212 | 283 |
| 5 | 39.3 | 353 | 471 |
| 6 | 47.1 | 424 | 565 |
| 8 | 62.8 | 565 | 754 |
| 10 | 78.5 | 707 | 942 |
| 12 | 94.2 | 848 | 1,130 |
| 16 | 125.6 | 1,130 | 1,507 |
| 20 | 157.0 | 1,413 | 1,884 |
| 25 | 196.3 | 1,766 | 2,355 |
| 30 | 235.5 | 2,120 | 2,826 |
| 40 | 314.0 | 2,826 | 3,768 |
| 50 | 392.5 | 3,533 | 4,710 |
| 65 | 510.3 | 4,592 | 6,123 |
| 80 | 628.0 | 5,652 | 7,536 |
| 100 | 785.0 | 7,065 | 9,420 |
Chemistry
P22 composition
- Density
- 7.85 g/cm³
| Element | Limit, % | Why it matters |
|---|---|---|
| C | 0.05 – 0.15 | |
| Mn | 0.30 – 0.60 | |
| P | 0.025 max | |
| S | 0.025 max | |
| Si | 0.50 max | |
| Cr | 1.90 – 2.60 | |
| Mo | 0.87 – 1.13 |
Limits per ASTM A335 (P22); other product forms and specifications differ slightly. Your order's specification and edition govern.
Questions
About ASTM A387 Grade 22
What is the difference between Class 1 and Class 2?
Class 2 has higher strength requirements; both are normalised and tempered or annealed per A387.
Is Gr 22 plate used for reactors?
Yes, it is a standard hydroprocessing reactor material.
From enquiry to dispatch
How a ASTM A387 Grade 22 order runs
- 01 EnquiryGrade, specification, size, quantity
- 02 ReviewChecked against your standard
- 03 InspectPMI, dimensions, TPI if required
- 04 CertifyEN 10204 3.1 / 3.2, heat traceable
- 05 ShipPacked and documented for the destination
Need ASTM A387 Grade 22?
Send size, quantity, specification and destination. We reply with availability, certificates and delivery.