14Cr1MoR For Pressure Vessel

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional 14cr1mor for pressure vessel manufacturers and suppliers in China. Welcome to wholesale customized 14cr1mor for pressure vessel at competitive price from our factory. Good service and quality products are available.

 

14Cr1MoR for Pressure Vessel

14Cr1MoR steel plate is a type of pressure vessel steel plate with high strength, high toughness and corrosion resistance.

The implementation standard for 14Cr1MoR steel plate is GB/T 713.2-2023, which is the second part of steel plates and strips for pressure equipment, specifying the relevant requirements for non-alloy steels and alloy steels with specified temperature properties. This standard has replaced the original GB/T 713-2014 and GB/T 35012-2018 standards and came into effect in March 2024.

14Cr1MoR is a Cr-Mo series medium-temperature hydrogen-resistant steel, belonging to low-alloy high-strength special steel plates for pressure vessels.

The naming of its grade has specific meanings:

"14" indicates that the carbon content is ≤0.17%;

"Cr1" means the chromium content is between 1.15% and 1.50%;

"Mo" represents the molybdenum content is in the range of 0.45% to 0.65%; "R" refers to the fact that this steel plate is mainly used as a container plate.

 

 

C%	SI%	Mn%	Cr%	Ni%	Mo%	Nb%	V%	P%	S%	Alt%
0.05-0.17	0.50-0.80	0.40-1.50		1.15-1.50	0.45-0.65			≤0.020	≤0.010	-
Thickness, in mm			Tensile Strength			Yield Strength, min			Elongation, %, min
60<T≤100			520-680			310			19
100<T≤150			510-670			300

 

 

14Cr1MoR steel plates have excellent mechanical properties, high-temperature resistance, and corrosion resistance, with specific performances as follows:

 

Mechanical properties: The steel plates have high tensile strength and yield strength, which can meet the usage requirements in high-temperature and high-pressure environments. In addition, the steel plates also have good elongation and impact toughness.

High-temperature resistance: In high-temperature environments, 14Cr1MoR steel plates can still maintain good mechanical properties and dimensional stability, and are not prone to creep and deformation.

Corrosion resistance: Due to the addition of alloying elements such as Cr and Mo, the steel plates can effectively resist damages like hydrogen embrittlement and hydrogen corrosion in high-temperature and high-pressure hydrogen environments, thus extending the service life of equipment.

 

 

Due to its excellent performance, 14Cr1MoR steel plates are widely used in multiple fields:

 

Petrochemical industry: Used in manufacturing high-temperature and high-pressure equipment such as hydrogenation reactors, hydrodesulfurization units, coke drums, and synthesis towers.

Nuclear power: Used in manufacturing key components like steam generator shells, which can withstand high-temperature and high-pressure hydrogen corrosion.

Coal chemical industry: Used in manufacturing high-temperature and high-pressure equipment such as coal gasifiers and coal liquefaction reactors.

Energy sector: Play an important role in the manufacturing of equipment like power station boilers and steam turbine cylinders.

Others: Can also be used in manufacturing large-scale equipment in contact with hydrogen or hydrogen-mixed media, as well as low-temperature pressure vessels such as liquid hydrogen storage tanks.

 

 

Matching of thickness and performance: There are differences in the mechanical properties of steel plates with different thicknesses, so it is necessary to select appropriate specifications according to the design pressure and temperature of the equipment.

Welding process control: The preheating temperature, welding heat input and post-weld heat treatment must be strictly controlled to avoid welding defects.

Substitution and comparison: Compared with 15CrMoR, 14Cr1MoR has slightly lower chromium and molybdenum contents, and is more suitable for medium-temperature, high-pressure scenarios sensitive to cost. The actual selection should be based on specific working conditions.

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