SA299 Gr. A Steel Plate for Boilers and Pressure Vessels (ASTM Standard)

SA299 Gr.B Steel Plate

Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.

2026-08-26
ASTM SA299 Gr.A and SA299 Gr.B steel plates

SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.

2026-08-19
SA299 Gr. A Steel Plate for Boilers and Pressu

ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.

2026-08-11
What is the difference between A285 Gr. C and

A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.

2026-08-04
What material is SA283 Gr.B?

SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.

2026-07-31

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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.
The A299 standard includes two grades: SA299 Gr.A and SA299 Gr.B. The execution standard for SA299 Gr.A steel plate is ASME SA-299/SA-299M-2015 (Steel Plates for Pressure Vessels).

Chemical composition of SA299 Gr.A steel plate:

C	Si	Mn	P	S	Ni	Cr
≤0.28	0.15~0.4	0.9~1.5	≤0.025	≤0.025	≤0.4	≤0.3

Mo	Cu	Nb	V	Ti	Alt	B
≤0.12	≤0.4	≤0.02	≤0.03	≤0.03	≥0.02	≤0.001

SA299 Gr.A steel plate delivery conditions:
Hot-rolled, normalized, tempered, normalized and tempered, or quenched and tempered; delivery conditions may also be specified according to technical requirements.
Through-thickness property requirements: Z15, Z25, Z35.
Ultrasonic testing requirements: Level 1, Level 2, or Level 3.

Applications of SA299 Gr. A Steel Plate:
Used in industries such as boilers, chemicals, power generation, and petroleum.
Used to manufacture equipment and components such as reactors, heat exchangers, separators, spherical tanks, gas holders, liquefied gas tanks, nuclear reactor pressure vessels, boiler drums, LPG cylinders, high-pressure penstocks for hydroelectric power plants, and turbine spiral casings.