ASTM A516 GR.70 BOILER VESSEL STEEL PLATES

ASTM A516 GR.70 BOILER STEEL PLATES

ASTM A516/ A516, identical with ASME SA-516/ SA-516M, is the standard specification for carbon steel pressure vessel plates for moderate- and lower-temperature services. Carbon steel plates made in accordance with ASTM A516 are primarily intended for service in welded pressure vessels where improved notch toughness is important.

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ASTM A516 Gr.70 Boiler Steel Plate Specification : Chemical Composition and Mechanical Properties:

ASTM A516 Gr.70 Boiler Steel Plate Specification :

Description: Carbon Steel ASTM A516 Grade 70, 65, 60, 55
Manufacturing Types: Hot Rolled
Thickness: 2mm to 150 mm
Width: 0.6m to 3m
Length: 6m, 12m, customized
Surface: Natural, Painted
Packing: Standard sea packing, bundled with streel strip.

Chemical Composition and Mechanical Properties:

A516 Grade 70 Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S
A516 grade 70
Thick <12.5mm	0.27	0.13-0.45	0.79-1.30	0.035	0.035
Thick12.5-50mm	0.28	0.13-0.45	0.79-1.30	0.035	0.035
Thick50-100mm	0.30	0.13-0.45	0.79-1.30	0.035	0.035
Thick100-200mm	0.31	0.13-0.45	0.79-1.30	0.035	0.035
Thick>200mm	0.31	0.13-0.45	0.79-1.30	0.035	0.035

Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

Grade		A516 Grade 70 Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
A516 grade 70	mm	Min Mpa	Mpa	Min %

Heat Treatment:
Plates in thickness of 40 mm [1.5 in] or under it normally supplied in as-rolled condition. In case require normalized or stress relieved shall be informed before the order.
Plates over 40 mm [1.5 in] thickness shall be normalized.
In case notch-toughness tests are required on plates 1.5 in [40 mm] and under this thickness, the plates shall be normalized unless otherwise specified by the purchaser.
Agreed by purchaser, cooling rates faster than cooling in air are permissible for improvement of the toughness, provided the plates are subsequently tempered in 1100 to 1300℉ [595 to 705 ℃].

ASTM standards:
A20/A20M: General requirements of steel plates for pressure vessels and tanks
A435/A435M: Specification for straight-beam ultrasonic examination of steel plates
A577/A577M: For angle-beam ultrasonic examination of steel plates
A578/A578M: For straight-beam UT examniation of rolled plates for special applications