Characteristics of ASTM A203/A203M Nickel Allo

ASTM A203/A203M nickel alloy steel plates are widely used in the manufacture of pressure vessels and low-temperature equipment.

2026-05-09
Weldability Analysis of ASTM A202 Grade B Stee

ASTM A202 Grade B is a chromium-manganese-silicon low-alloy steel tailored for high-pressure, medium-temperature pressure vessel applications.

2026-04-30
Mechanical Properties of ASTM A202 Grade A Ste

ASTM A202 Grade A is a critical chromium-manganese-silicon low-alloy steel plate specifically designed for welded pressure vessels and boilers operating at medium temperatures.

2026-04-30
ASTM A202 Pressure Vessel Steel Plate

ASTM A202 Pressure Vessel Steel Material and Grades:
Alloy System: **Chromium-Manganese-Silicon (Cr-Mn-Si)** Low-Alloy Heat-Resistant Steel

2026-04-17
ASTM A204/A204M Grade B molybdenum alloy steel

ASTM A204/A204M Grade B molybdenum alloy steel plates for pressure vessels feature superior chemical composition and mechanical properties compared to Grade A

2026-04-10

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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.