Knowledge

P355NL1 and P460NL2 are specific grades of weldable, fine-grain steel for pressure equipment (boilers, vessels) under EN 10028-3, distinguished by str

S355NL and S355J0 are both European standard (EN 10025) high-strength structural steels with a minimum yield strength of 355 MPa, but they differ in d

S355J0 and S355J2 are structural steels under the EN 10025 standard, sharing a minimum yield strength of 355 MPa, but their key difference lies in the

ASTM A517 Grade B and Grade E are both high-strength, quenched and tempered alloy steel plates for fusion-welded pressure vessels, but they differ in

ASME SA537 Class 1 is a normalized carbon-manganese-silicon steel plate used primarily for pressure vessels and boilers, offering excellent toughness

ASTM A387 Grade 11 Class 2 and Grade 22 Class 2 are chromium-molybdenum alloy steels for high-temperature pressure vessels, differing mainly in their

ASTM A202 Grade B (Cr-Mn-Si) and ASTM A203 Grade B (Ni-alloyed) are distinct pressure vessel steels differing in composition, primarily A202's chromiu

ASTM A517 Grades B and F are both high-strength, quenched and tempered alloy steel plates for fusion-welded pressure vessels, but differ in specific c

ASTM A517 Grade A and E are high-strength, quenched & tempered alloy steel plates for pressure vessels, but Grade E is a specific, tougher composition

ASTM A203 Grade A and Grade D are nickel-alloy steel plates for low-temperature welded pressure vessels, differing mainly in nickel content, where Gra

ASTM A533 Grades B and C are manganese-molybdenum (and Mn-Mo-Ni) alloy steel plates for pressure vessels, differing mainly in their required tensile/y

ASTM A533 Grade A and Grade B are low-alloy steels for welded pressure vessels, with Grade B being the more common, offering higher strength and tough