A299 Gr.B Chemical Composition

A299 Gr.B under standard ASTM A299/ ASME SA299 is a carbon steel for pressure vessel plates. 
A299 Gr.B Chemical Composition 
Carbon, max.: 0.30, Silicon:0.15-0.40, Manganese:0.90 -1.50, Phosphous, max.: 0.025, Sulfur, max.:0.025.

A299 Gr.B Plates Mechanical Properties: 

Tensile strength Mpa[ksi]: 550-690 [80-100]
Yield strength Min. Mpa[ksi] thickness ≦25mm: 325[47]
Yield strength Min. Mpa[ksi] thickness>25mm: 310[45]
Elongation in 8 in. Min, %: 16
Elongation in 2 in.Min, %: 19

ASTM A299Gr.B Plate Technical Requirements & Additional Services:

High tension test
Low temperature impacting test
Normalised for thick plates over 40mm
Simulated post-welded heat treatment (PWHT)
Rolling under standard NACE MR-0175 (HIC+SSCC)
Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
Shot blasting and Painting,Cutting and welding as per end user’s demands
Based on positive and pragmatic attitude, efficient management system, and perfect after-sale service, Shanghai Katalor guarantees to provide you with the prime quality A299 Gr.A steel plates, A299Gr.B steel sheet. If you have any needs, please feel free to contact us. We will offer you best A299Gr.B plate products and service to you as soon as we get your inquiry.

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