SA-387 Gr 11 Cl 2 Clad PlateASTM A387 · ASTM A264 / A265 · Manufacturer, stockist & exporter, India
ASTM A387 Gr 11 Cl 2 · 1¼Cr-½Mo plate
An SA-387 Gr 11 Cl 2 clad plate is carbon-steel plate bonded to a corrosion-resistant alloy layer, made from SA-387 Gr 11 Cl 2 to ASTM A387 Gr 11 Cl 2 · ASME SA-387. Clad plate puts a thin alloy layer where the fluid is, on a cheaper carbon-steel base that carries the pressure — often far cheaper than solid alloy for thick vessels.
- ASTM A387
- ASTM A264 / A265
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SA-387 Gr 11 Cl 2 Clad Plate?
- What it is
- Carbon-steel plate bonded to a corrosion-resistant alloy layer
- Material
- ASTM A387 Gr 11 Cl 2 · ASME SA-387
- Dimensions
- ASTM A264 / A265 · ASME SA-264 / SA-265
- Grade
- SA-387 Gr 11 Cl 2
- Best at
- Hot, high-pressure reactors and heat exchangers
SA-387 Gr 11 Cl 2 Clad Plate Specification
| Product | SA-387 Gr 11 Cl 2 Clad Plate |
|---|---|
| Material standard | ASTM A387 Gr 11 Cl 2 · ASME SA-387 |
| Dimensional standard | ASTM A264 / A265 · ASME SA-264 / SA-265 |
| Thickness | 4.76 mm (3/16") and up |
| Size | Mill plates or cut to drawing |
| Testing | Chemical & mechanical per heat · NDT · impact where specified |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Clad Plate
Clad plate puts a thin alloy layer where the fluid is, on a cheaper carbon-steel base that carries the pressure — often far cheaper than solid alloy for thick vessels.
- Explosion-bonded or roll-bonded
- Alloy layer 2–6 mm typical
- Base: SA-516 or SA-387
More on choosing: Clad plate guide.
SA-387 Gr 11 Cl 2 Clad Plate: Why 387-11 for clad plates
Clad plate puts a thin alloy layer where the fluid is, on a cheaper carbon-steel base that carries the pressure — often far cheaper than solid alloy for thick vessels. In SA-387 Gr 11 Cl 2, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Carbon and low-alloy plate is the workhorse of pressure vessels and structures. SA-387 Gr 11 Cl 2 is picked for hot, high-pressure reactors and heat exchangers. |
|---|---|
| Typical service | Refineries — Hydroprocessing reactors. |
| Matching filler | ER80S-B2 / E8018-B2 |
SA-387 Gr 11 Cl 2 Clad Plate Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 1.00 – 1.50 |
| Molybdenum | 0.45 – 0.65 |
| Carbon | 0.05 – 0.17 |
| Manganese | 0.40 – 0.65 |
| Silicon | 0.50 – 0.80 |
| Phosphorus | 0.025 max |
| Sulphur | 0.025 max |
SA-387 Gr 11 Cl 2 Clad Plate Mechanical Properties
| Class 2 | Value |
|---|---|
| Tensile strength | 515 – 690 MPa · 75 – 100 ksi |
| Yield strength | 310 MPa · 45 ksi |
| Elongation (50 mm) | 22% |
Full chemistry, properties and equivalents are on the SA-387 Gr 11 Cl 2 grade page.
SA-387 Gr 11 Cl 2 Clad Plates for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSA-387 Gr 11 Cl 2 Clad Plate — questions buyers ask
When is clad plate cheaper than solid alloy?
Usually when the total thickness is well above the corrosion allowance — the thicker the vessel, the bigger the saving.
Which standard covers SA-387 Gr 11 Cl 2 clad plates?
The material is ASTM A387 Gr 11 Cl 2 · ASME SA-387; dimensions follow ASTM A264 / A265 · ASME SA-264 / SA-265. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SA-387 Gr 11 Cl 2 clad plate?
The steel price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026