ASME SA 387 Gr. 5 Cl. 1 & Cl. 2 Plates

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Business Type	Manufacturer, Exporter, Supplier, Retailer, Trader, Distributor, Importer
Type	Plates
Material	Chrome-Moly Alloy Steel
Color	Metallic
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Product Details

Thickness

6 Mm - 100 Mm

Width

1000 Mm - 3000 Mm

Length

3000 Mm - 12000 Mm

Surface Finish

Mill / Shot Blasted / Painted

Chromium Content

~5%

Molybdenum Content

~0.5%

Tensile Strength

415 - 690 MPa

Yield Strength

≥ 205 - ≥ 275 MPa

Elongation

≥ 20%

Impact Toughness

As Per ASME Requirement

Product Overview

ASME SA 387 Gr. 5 Cl. 1 and Cl. 2 Plates are chrome-moly alloy steel plates designed for high-temperature, pressure vessel, and boiler applications. With a 5% chromium and 0.5% molybdenum composition, these plates offer excellent oxidation resistance, thermal stability, and high-temperature strength.

The main difference between Class 1 and Class 2 is the tensile strength, with Class 2 offering slightly higher strength. These plates are ideal for use in refineries, petrochemical plants, power stations, and heat exchangers.

Key Features

Excellent heat and oxidation resistance
Maintains strength at elevated temperatures
Enhanced creep and rupture resistance
Good weldability and formability
Available in normalized and tempered condition

Specifications

StandardASME SA 387 / ASTM A387

Grade	Gr. 5
Class	1 (Cl.1) and 2 (Cl.2)
Condition	Normalized and Tempered
Chromium Content	~5%
Molybdenum Content	~0.5%
Thickness	6 mm – 100 mm
Width	1000 mm – 3000 mm
Length	3000 mm – 12000 mm
Surface Finish	Mill / Shot Blasted / Painted

Mechanical Properties

PropertyClass 1Class 2

Tensile Strength	415 – 585 MPa	515 – 690 MPa
Yield Strength	≥ 205 MPa	≥ 275 MPa
Elongation	≥ 20%	≥ 20%
Impact Toughness	As per ASME requirement	As per ASME requirement

Chemical Composition (% max)

CMnSiPSCrMo

0.15

0.60

0.50

0.025

4.00–6.00

0.45–0.65

Testing & Quality Assurance

Ultrasonic Testing – As per EN 10160 or ASTM A578
Charpy Impact Testing (on request)
Tensile, Yield, and Elongation Testing
Chemical Composition and Hardness Testing
Third-party Inspection – TUV, DNV, SGS, Lloyd’s (on request)

Applications

Oil refineries and chemical plants
Pressure vessels and reactors
Heat exchangers and boilers
High-temperature piping and tanks
Power generation and thermal processing units

Certifications & Documentation

Mill Test Certificate – EN 10204 3.1 / 3.2
Mechanical and Chemical Test Reports
Heat Treatment Records
Third-party Inspection Reports (if required)
Full Traceability and QA/QC Documentation

Would you like to prepare this in a PDF brochure format, compare Gr.5 with Gr.9 or Gr.11, or add this to a full chrome moly steel catalog? I can assist further.

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