ASTM A387 Grade 11 Plates: 1.25Cr-0.5Mo, Class 1 & 2. Get quotes from verified suppliers on MetalMitra.
- ASTM A387 Grade 11 Plates
- Alloy Steel Plates
- 1.25Cr-0.5Mo
- Class 1 & 2
Your details are never shown publicly. The MetalMitra team reviews every requirement.
Specifications
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Grade | Grade 11 Class 1, Class 2 |
| Chemistry | 1.25% Cr, 0.5% Mo |
| Thickness | 6 mm to 150 mm |
| Width | 1500 mm to 3000 mm |
| Length | 6000 mm to 12000 mm |
| Condition | Normalised & tempered |
Source ASTM A387 Grade 11 Plates from verified manufacturers, mills and stockists on MetalMitra. A387 Grade 11 chromium-molybdenum plates for elevated-temperature pressure vessels, boilers and refinery equipment.
Share your size, grade, quantity and delivery location once, and compare offers from suppliers who stock or manufacture ASTM A387 Grade 11 Plates to ASTM A387.
What you can source
- Plates — Hot-rolled plates in normalised and tempered condition.
- Cut Pieces — Plates cut to size, circles and rings to drawing.
- Boiler Quality Plates — Plates for pressure vessels and boiler drums.
- Clad-Ready Plates — Base plates for cladding and overlay.
Key properties
- High-Temperature Strength — Retains strength and creep resistance at elevated temperatures.
- Hydrogen Resistance — Chromium-molybdenum chemistry resists hydrogen attack.
- Weldability — Weldable with proper pre-heat and PWHT procedures.
- Pressure Rated — Made for ASME pressure vessel and boiler service.
Applications & industries
- Pressure Vessels
- Boilers
- Reactors
- Heat Exchangers
- Refineries
- Petrochemical Plants
- Power Plants
- Hydrocrackers
Testing & documentation
Inspection and documentation for ASTM A387 Grade 11 Plates follow ASTM A387 / ASME SA387 plus any extra requirements in your PO.
- Ultrasonic test (A435/A578) as applicable
- Mechanical & impact testing
- Chemical analysis
- Heat treatment records
- Dimensional inspection
- EN 10204 3.1 Mill Test Certificate
Why source on MetalMitra
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, test certificates and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Request pricing
Post an RFQ for ASTM A387 Grade 11 Plates with your drawing or specification and receive quotes from verified suppliers.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the test certificate.
Applications & industries
- Pressure Vessels
- Boilers
- Reactors
- Heat Exchangers
- Refineries
- Petrochemical Plants
- Power Plants
- Hydrocrackers
- Oil & Gas
- Petrochemical & Refining
- Power Generation
- Chemical Processing
- Fertiliser
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
FAQs
A specification for chromium-molybdenum alloy steel plates intended for elevated-temperature pressure vessels and boilers.
Class 2 has higher tensile and yield requirements than Class 1 for the same grade.
Yes, A387 plates are normally supplied in the normalised and tempered condition.
Need ASTM A387 Grade 11 Plates?
Share grade, size, quantity and delivery location. We compare suitable suppliers and come back with a clear quotation.
