Boiler Plate ASTM A387 Grade 11 Class 1 Cr-Mo Alloy Steel Plates

ASTM A387 Grade 11 Class 1 is a chromium-molybdenum (Cr-Mo) alloy steel plate for high-temperature welded boilers and pressure vessels, containing about 1.25% Chromium and 0.5% Molybdenum, offering good strength at elevated temperatures for oil, gas, and petrochemical applications, available in various dimensions with specified tensile properties.

We can supply:

Thickness from 5mm to 150mm

Width: from 1,500mm to 2,500mm

Length: from 6,000mm to 12,000mm

Key Characteristics:

Standard: ASTM A387 / A387M (American Society for Testing and Materials).

Type: Alloy Steel Plate.

Composition: Contains ~1.25% Chromium (Cr) and ~0.5% Molybdenum (Mo).

Application: Designed for welded boilers, pressure vessels, and storage tanks in high-temperature service, especially in oil & gas.

Classes: Available in Class 1 (lower tensile strength) and Class 2 (higher tensile strength). Grade 11 is typically offered in both.

Chromium & Molybdenum content (according to the ASME specification)

As one of the leading manufacturers in China, we warmly welcome you to buy our a387 grade 11 plate. Our factory also accept the customized orders. Please be free to enjoy our competitive price and excellent service.

Skilled skilled knowledge, strong sense of company, to meet the company wants of customers for Boiler Plate ASTM A387 Grade 11 Class 1 Cr-Mo Alloy Steel Plates. Our goal is to establish long-term and mutually profitable business relationships with domestic and overseas clients. We will not live up to the historic opportunity of the times.

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What is the ASTM A387 Grade 11 equivalent to?

ASME SA387 grade 11

ASTM A387 grade 11 equivalent steel is ASME SA387 grade 11. ASTM A387 grade 11 covers A387 grade 11 class 1 and A387 grade 11 class 2, which are equivalent to ASME SA387 grade 11 class 1 and SA387 grade 11 class 2 respectively.

What is ASTM A387 material?

The ASTM A387 specification is the Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum plates used in the application of welded boilers and pressure vessels subjected to elevated temperatures. The two grades SSAB produces are available as Class 1 and/or Class 2.

What is A387 grade 22 material?

Chrome Molybdenum Steel

Chrome Molybdenum Steel – ASTM A387 Grade 22 Class 2. The A387 Grade 22 Class 2 – a grade of chromium-molybdenum alloy – is mainly intended for use in pressure vessels and welded boilers, which are designed for use in elevated temperature service.

What is the difference between SA 387 Grade 11 CL 1 and Class 2?

The difference between SA 387 Grade 11 Class 1 and Class 2 Plate lies in their mechanical properties. However, they both have the same chemical composition. The tensile strength and yield strength of class 2 material is higher than that of class 1, whereas the elongation for class 1 is higher compared to class 2.

GNEE Steel also supplies a variety of boilers and pressure vessel steel plates, such as A204 Grade B,A515 Grade 70,A537 Class 1,SA387 Grade 11 Class 1,P265GH,S537 Class 2,P355Q,P275N,P355N,P690Q,Q345R, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to alloy@gneesteelgroup.com. You are welcome to consult us, and we are very willing to answer your questions.