BBNsteel supply high quality SA299 Grade A boiler plate

The chemical composition of SA299 Grade A steel produced by BBNsteel company fully meets the requirements of the ASME SA-299 standard, and the content of harmful impurities such as P and S is low. In the thickness direction of the boiler plate, the chemical composition is uniform without obvious composition segregation. Compared with imported steel plates, domestic steel plates contain lower carbon, manganese and chromium elements.

SA299 Grade A steel composition(%)

Grade	C		Mn		P	S	Si
	≤25mm	＞25mm	≤25mm	＞25mm
SA299 Grade A	≤0.26	≤0.28	0.90-1.40	0.90-1.50	≤0.035	≤0.035	0.15-0.40

SA299 Grade A steel is a carbon-manganese-silicon steel plate for pressure vessels and welded boilers. It is generally used for various welded parts whose working temperature does not exceed 400°C, such as boiler drums and pressure vessels. SA299 Grade A boiler plate has high medium temperature strength, good plasticity, heat treatment process performance and welding process performance.

SA299 Grade A steel plate is mainly used in the head and shell of subcritical boiler drum products. Generally used for various welding parts whose working temperature does not exceed 400°C, such as boiler drums, pressure vessels, etc.