Introduction to SA204 Gr A / B / C steel plate

SA204 American standard vessel plates are divided into three levels: A, B and C. SA204 Gr A, SA204 Gr B and SA204 Gr C are killed steel. SA204 Gr A, SA204 Gr B and SA204 Gr C steel plates are mainly used for welding Mo alloy steel plates of boilers and other pressure vessels.

SA204 Gr A / B / C steel plate executive standard: ASME SA204 / SA204M.

SA204 Gr A / B / C steel plate delivery status: normalized rolling, normalized.
The steel plate can be delivered in normalized condition with the thickness of more than 40mm, and it can also be delivered in normalized condition.

SA204 Gr A / B / C steel plate chemical composition, element and finished product smelting analysis:

C	Si	Mn	P	S	Mo
≤0.23	0.15-0.4	≤0.9	≤0.025	≤0.025	0.45-0.6

Mechanical properties of SA204 Gr A / B / C steel plate:

Properties	SA204 Gr A	SA204 Gr B	SA204 Gr C
Tensile strength	65-85 (450-585)	70-90 (485-620)	75-95 (515-655)
Yield strength	≥37 (255)	≥40 (275)	≥43 (295)
Elongation (200mm)	≥19	≥17	≥16
Elongation (50mm)	≥23	≥21	≥20

SA204 Gr A / B / C plate tensile strength:

Grade	Tensile strength		Maximum thickness (mm)
Grade	Ksi	(MPa)	Maximum thickness (mm)
SA204 Gr A	65-85	(450-585)	150
SA204 Gr B	70-90	(485-620)	150
SA204 Gr C	75-95	(515-655)	100

Dimension, shape, weight and allowable deviation of SA204 Gr A / B / C steel plate:
The dimension, shape, weight and allowable deviation of steel plate shall comply with the provisions of ASME SA204M standard.