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

Need advice, or a quote?

P355QL2 steel plate, P355QL2 chemical composition, P355QL2 mechanical property

P355QL2 steel plate under EN10028-6 standard which is a kind boiler steel. P355QL2 steel has a good weldability, it is widely used to build boilers and pressure vessels such as petroleum, chemical industry, power plants.

P…Q means the -20 degree and the impact energy is 27J

P…QH means the -20 temperature quality and the impact energy is 27J

P…QL2 means the -40 temperature quality and the impact energy is 27J

P…QL2 means the -60 temperature quality and the impact energy is 27J

P355QL2 steel plate specification:

Grade: P355QL2 Steel Standard: EN10028-6 Number: 1.8869

Thickness:6mm-450mm, Width:1200mm-4200mm, Length:3000mm-18000mm

P355QL2 chemical composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	N	B
P355QL2	0.16	0.4	1.5	0.020	0.010	0.015	0.005
	Mo	Cu	Nb	Ni	Ti	V	Zr
	0.25	0.3	0.05	0.5	0.03	0.06	0.05

Grade	P355QL2 mechanical property
Grade	Thickness	Yield	Tensile	Elongation
P355QL2	mm	Min Mpa	Mpa	Min %
	6-50	355	490-630	22%
	50-100	335	490-630	22%
	100-150	315	450-590	22%

P355QL2 steel surface treatment: Shot blasting and painting or coated.

P355QL2 steel application:

P355QL2 steel is widely used to build boilers and pressure vessels such as petroleum, chemical industry, power plants.

Additional Condition :

UT (Ultrasonic examination), AR (As Hot Rolled only), TMCP (Thermal Mechanical Control Processing), N(Normalized), Q+T (Quenched and Tempered), Z Direction Test (Z15, Z25, Z35) ,Charpy V-Notch Impact Test, HIC test, NDT, PWHT( Simulated Post Weld Heat Treatment), NACE0175, The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.

If you are interesting in our P355QL2 steel products, please feel free to contact us. Your enquiry will be highly appreciated, and we will give you a quotation upon receiving your detailed requirements.