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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P355NL1 steel plate supplier, P355NL1 steel seller

P355NL1 steel grade is a normalized, weldable fine grain steels for pressure purposed. The dimensions and tolerance on dimensions should be according to EN 10028-1.

P355NH is a normalised steel grade with a minimum yield strength of 275-460 N/mm² and plates are available ex–stock from our warehouse.

P…N mean the room temperature, P…NH means the elevated temperature quality.

P…NL1 means the low temperature quality, P…NL2 means the special low temperature quality.

P355NL1 steel plate sizes:

Thickness: 5mm to 300mm,

Width: 1500mm to 4050mm,

Length: 3000mm to 15000mm

Heat treatment: Normalizing,Annealing,Tempering,Quenching,Hardening and tempering,Seasoning,Surface hardening,Carburizing

P355NL1 Chemical composition cast analysis:

Element	P355NL1 Max %	Element	P355NL1 max %
C	0.18	Cr	0.30
Si	0.50	Cu	0.30
Mn	1.10-1.70	Mo	0.08
P	0.025	Nb	0.050
S	0.015	Ni	0.50
AL	0.020	Ti	0.03
N	0.012	V	0.01

P355NL1 Mechanical properties:

Grade	Type	Thickness	Yield Strength	Tensile Strength	Elongation	Impact Energy
		(mm)	MPa (min)	MPa	% (min)	(KV J) (min)
						-40 degree
P355NL1	Normalized	≤ 16	355	490-630	22	27
		16> to ≤40	345	490-630	22	27
		40> to ≤60	335	490-630	22	27
		60> to ≤100	315	470-610	21	27
		100> to ≤150	305	460-600	21	27
		150> to ≤250	295	450-590	21	27

P355NL1 and P355NL2 compared

The differences between P355NL1 and P355NL2 can be seen in the tables below but are summarised as follows:

Chemistry: P355NL2 has a more tightly controlled Phosphorus and Sulphur content

Mechanical Properties: P355NL2 has higher required impact values at all specified temperatures and in both longitudinal and transverse directions. It also specifies requirements for transverse impact testing at -50 deg C.

Any need in P355NL steel plate, please feel free to contact us by email or calling us.