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ASTM A 204 gr. A,A 204 gr.B, A 204 gr.C Steel with Cr., Mo.,Cr-Mo.

ASTM A 204 gr. A,A 204 gr.B, A 204 gr.C Steel with Cr., Mo.,Cr-Mo.

A 204 Standard Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum Steel Grade: A 204 Grade A, A 204 Grade B, A 204 Grade C

Category: Alloy Steel
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Updatetime: 21-Aug-2023

 

A204 Standard Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum

  1. Steel Grade:A 204 Grade A, A 204 Grade B, A 204 Grade C

  2. Specification:

Maximum Thickness: A 204 Grade A , B: 150mm A 204 Grade C : 100mm Width: 1500mm to 4020mm Length: 3000mm to 18000mm

  1. Referenced Documents in producing steel.

A 20/A 20M A 435/A 435M A 577/A 577M A 578/A 578M

  1. Heat Treatment

Plates 40 mm and under in thickness are normally supplied in the as-rolled condition Plates over 40 mm in thickness shall be normalized. The steel shall be killed。

  1. Chemical Composition and property.

A: Chemical detail of each grade see A 204/A 204M – 03 B: Property in the following: Tensile strength : min 450-655Mpa Yield Strength : min 255-295Mpa Elongation : 20-23%

  1. Mechanical Requirements

The steel shall conform to the chemical requirements

  1. SUPPLEMENTARY REQUIREMENTS

S1. Vacuum Treatment, S2. Product Analysis, S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons, S4.1 Additional Tension Test, S5. Charpy V-Notch Impact Test, S6. Drop Weight Test, S7. High-Temperature Tension Test, S8. Ultrasonic Examination in accordance with Specification A 435/A 435M, S9. Magnetic Particle Examination, S11. Ultrasonic Examination in accordance with Specification A 577/A 577M, S12. Ultrasonic Examination in accordance with Specification A 578/A 578M, S17. Vacuum Carbon-Deoxidized Steel.

  1. Application Fields: This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels.

  2. Trade Terms: FOB, CFR, CIF , CNF.

  3. Payment Terms: T/T, 100% Irrevocable at sight L/C

  4. Delivery Time: 30-35days

  5. Services of Steel: Cutting, Welding, Painting , Ball blast and others processing according to customers requirement.

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