Tianjin Bohai Metal Corporation

ASTM A299 GR.A Mn-Si Alloy Pressure vessel steel plate

ASTM A299 /A299M covers manganese, silicon carbon steel plate for used in welded boiler and others pressure vessels in steel grade A299 Grade A and A299 Grade B. ASTM A299 plates in 50 mm and under in thickness are normally supplied in the as-rolled condition. Plates may be ordered normalized or stress relieved, or both.

Boiler Pressure Vessel Steel

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Commodity name: ASTM A299 GR.A Mn-Si Alloy Pressure vessel steel plate

ASTM A299 GR.A Mn-Si Alloy Pressure vessel steel plate Descriptions:

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.

Chemical Composition and Mechanical Properties:

A299 Grade A Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	Mo
A299 GR.A	0.28-0.30	0.13-0.45	0.84 -1.62	0.035	0.035	-

Grade	A299 Grade A Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
A299 GR.A	mm	Min Mpa	Mpa	Min %
	t≦50	275-290	515-655	19
	50<t≦200	275-290	515-655	19

Steel Grade : A 299 Grade A, A 299 Grade B.
Dimension(T*W*L) : Thickness: 8mm to 300mm ; Width: 1500mm to 4020mm ; Length: 4000mm to 18000mm
Adopt Standard: ASTM A299 and ASME SA 299.
Heat Treatment: Hot Rolled, CR, Normalized, Quenched, Tempering, TMCP, Electroslag Remelting Technical.
Steel Services: Cutting, Painting, Ball blast, Pretreatment and the Third party in section in DNV, BV, LR, GL, ABS and CCS in super thick ship steel plate

ASTM A299 Grade A boiler steel plate,ASME SA299 Grade A pressure vessel steel plate are specification for carbon steel and Manganese-Silicon. As for thin plate SA299 Grade A which produced from steel coil SA299 Grade A and furnished without heat treatment or just with stress relieving only,the additional requirements,including additional testing requirements and the reporting of additional test results shall be applied for A20/A20M steel standard.

Technical Requirements & Additional Services: