Boiler Quality Plate

Boiler Quality (BQ) Plates, also known as pressure vessel plates, are specialized carbon steel plates engineered to withstand intense internal pressure in valves, boilers, and storage tanks. Jitu Milan Steels provides these high-performance plates, which are valued for their exceptional longevity and versatility across various industrial applications. Common uses for BQ steel include steam boilers, pressure vessels, penstock pipes, and LPG bullets.

The most widely utilized standard for these plates is ASTM A516 (or ASME SA516), which is available in four primary grades: Gr55, Gr60, Gr65, and Gr70. These grades offer tensile strengths ranging from 380 MPa to 620 MPa, allowing for precise selection based on structural requirements. Beyond strength, these plates are specifically designed to resist degradation in corrosive environments, helping to mitigate common issues like crevice corrosion, pitting, and stress corrosion cracking.

We deal in all Thickness is from 3mm-150mm as per client's requirements.

Boiler Quality Plate Grades

Specifications

Standard : ASTM A515 / ASME SA515, A516 / SA516, A285 / SA285
Thickness : 3mm – 600mm
Width : 1000mm – 4500mm
Length : 2500mm – 14000mm
Heat Treatment : Rolled/Normalised/N+T/QT
Process of Manufacturing : : Hot-Rolled (HR)
Uses : : Heat-resistant steel for boilers in the boiler industry is used to produce boiler bodies and vessels, as well as tanks to transport liquefied gases, petroleum products and other liquid and gaseous goods; and to manufacture fittings, valves and other auxiliary elements for pressure equipment.

A515/SA515 Grade 60/70

	C						P max	S max	Si max
	t < 12.5mm	12.5mm < t ≤ 50mm	50mm < t≤ 100mm	100mm < t≤ 200mm	t > 200mm	Mnmax	P max	S max	Si max
A515 Grade 60	0.24	0.27	0.29	0.31	0.31	0.90	0.035	0.035	0.15-0.4
A515 Grade 70	0.31	0.33	0.35	0.35	0.35	1.20	0.035	0.035	0.15-0.4

A285/SA285 Grade B/C

Element	C % Max	Si % Max	Mn % Max	P % Max	S % Max
A285 Gr B	0.22	0.08 – 0.45	0.98	0.035	0.035
A285 Gr C	0.16	0.35	0.4/1.2	0.03	0.03

A516 Grade 60/70

Grade	C	Si	Mn	P	S	Al	Cr	Cu	Ni	Mo	Nb	Ti	V
A 516 Gr. 60	0.20	0.4	0.95/1.50	0.025	0.025	0.02	0.3	0.3	0.3	0.08	0.01	0.03	0.02
A 516 Gr. 70	0.10/ 0.22	0.6	1/ 1.5	0.025	0.025	0.02	0.3	0.3	0.3	0.08	0.01	0.03	0.02

P265 GH

Grade	C	Mn	P	S	Si
P265 GH	≤0.20	0.80 – 1.40	0.025 max	0.015 max	≤0.40

SA 537 Class 1 or 2

C	Mn		P	S	Si	Cr	Cu	Ni	Mo
	≤ 40 mm	> 40 mm
0.24 max	0.70/1.35	1.00/1.60	0.035	0.035	0.15/0.50	0.025	0.35	0.25	0.080

NACE MR0103, MR0175 + HIC

CHEMICAL COMPOSITION
C	Si	MN	P	S	V	Nb	Ti	Other	Carbon Equivalent
Max (b)	Max	Max (b)	Max	Max	Max	Max	Max		% maximum
									CE(IIW)	CE(Pcm)
0.26	–	1.20	0.030	0.030	(c),(d)	(c),(d)	(d)	(a)	–	–

IS 2002 Gr. 1, 2 & 3

Grade	C	Si	P	S
IS 2002 Gr 1	0.18	0.10 – 0.35 max	0.40 max	0.040 max
IS 2002 Gr 2	0.20	0.10 – 0.35 max	0.50 max	0.050 max
IS 2002 Gr 3	0.22	0.10 – 0.35 max	0.50 max	0.050 max