SA299 Grade A SA299 Grade B A299 Grade A/B steel plate--YUSHENG STEEL

SA299 Grade A, SA299 Grade B Pressure vessel steel plate

Source：Yusheng steel

Carbon steel with Manganese-Silicon plate SA299 Grade A,SA299 Grade B under steel specification standard ASME SA 299/SA 299M.There are other two steel grades A299 Grade A and A299 Grade B owned the similar steel properity which is according to ASTM A 299/A 299M.As for the heat treatment, steel plate A299 Grade A and A299 Grade B equal and under 50 millimeter are normally rolled in the as-rolled condition,pressure vessel steel plate.

According to ASTM A299/A299M standard, steel plate A299 Grade A and A299 Grade B shall be chosed in the following technical conditions: S1.Vacuum treatment, S2. Product analysis. S3. Simulated post weld heat treatment of mechanical test coupons, S4. Additional tension test, S5. Charpy V-notch impact test, S6. Drop weight test, S7. High temperature tension test.

Mechanical properties for SA299 Grade B pressure vessel steel plate:

Thickness	Yield strength (Mpa)	Tensile strength (Mpa)	Elongation ≥,% 200mm
T≤25	325	550-690	16
T＞25	310	550-690	16

Chemical composition of Heat analysis for SA299 Grade B Crabon steel plate (Max %):

C	Si	Mn	P	S	Ni
0.28	0.15/0.40	0.90/1.50	0.020	0.010	0.25
Cr	Mo	Nb	Cu	Al ≥
0.25	0.10	0.02	0.25	0.020