SA 203 GR.D Alloy Pressure Vessel Steel plate

SA 203 Grade D is a specification for pressure vessel steel plate, which is used for high-temperature service applications. The "SA" in SA 203 stands for "Specification for ASME (American Society of Mechanical Engineers) A/SA-203."

The steel plate is composed of alloy materials, including nickel, chromium, and molybdenum, which provide excellent resistance to high-temperature environments. The plate is also designed to withstand high-pressure applications, making it suitable for use in pressure vessels and boilers.

The mechanical properties of SA 203 Grade D steel plate are as follows:
Tensile strength: 65-85 ksi (450-585 MPa)
Yield strength: 37 ksi (255 MPa)
Elongation in 2 inch (50 mm): 19%
These mechanical properties are achieved through appropriate heat treatment during manufacturing, including quenching and tempering.

SA203 Grade D Chemical Composition
Grade	The Element Max (%)
	C	Si	Mn	P	S
SA203 Grade D	0.17	0.13-0.45	0.70-0.80	0.035	0.035

 

Mechanical Property of SA203 Grade D steel plate	SA203 Grade D
Tensile strength, kis [MPa]	65-85 [450-585]
Yield strength, min, kis [MPa]	37 [255]
Elongation in 8 in. [200 mm], min, %	19
Elongation in 2 in. [50 mm], min, %	23