EN10028-3 P460NL2 steel requirements for pressure vessels

(1) When used for pressure components of containers, the use of steel for EN10028-3 P460NL2 pressure vessels steelshall not exceed the allowable range specified in the corresponding standards.
(2) When carbon steel and low alloy carbon steel used for welding the main pressure components of the structural pressure vessel, the phosphorus content of the steel for EN10028-3 P460NL2 pressure vessel steel shall not exceed 0.030%, and the amount of sulfur (S) Should not be greater than 0.020%.
(3) When carbon steel and low alloy steel used for welding the main pressure components of the structural pressure vessel, the carbon content of the EN10028-3 P460NL2 pressure vessel steel shall not exceed 0.25%, and the carbon equivalent Ceq(1) shall not exceed 0.45%. If you want to use

EN10028-3 P460NL2 pressure vessel steel with carbon content greater than 0.25%, the following requirements should be met:
1. Obtain the consent of the user before construction;
2. The carbon equivalent Ceq shall not be greater than 0.45%;
3. Provide the welding test report and welding procedure evaluation report of the material, and report it to the safety supervision organization of the General Administration for review and approval.
(4) For quenched and tempered low alloy steel used for welding structural pressure vessels, if the standard tensile strength of steel for EN10028-3 P460NL2 pressure vessel is σь ≥ 540 MPa, EN10028-3 P460NL2 steel for pressure vessels The amount of phosphorus (P) should not exceed 0.020%.

The amount of sulfur (S) should not exceed 0.015%. The welding crack sensitivity coefficient Pcm(2) should not be greater than 0.25%. The welding test report and welding procedure evaluation report of the materials shall be provided and reported to the safety supervision agency of the General Administration for review and approval.
Note:

(1) Ceq=C+Si/24+Ni/40+Cr/5+Mo/4+V/14
(2) Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B
(5) For steel plates used for mobile pressure vessel tanks and low alloy steel plates for pressure vessels, two EN10028-3 P460NL2 pressure vessel steel plates shall be pumped in each batch for impact test at a test temperature of -20 ° C or according to the drawings. Provisions.

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