ASME SA516 GR.70 Pressure vessel steel plate

ASTM A516 Grade 70 Plate is also called out as ASME SA516-70. This steel plate grade is a medium carbon alloy that also contains amounts of manganese, phosphorus, sulfur, and silicon. A516 is primarily used for service in welded pressure vessels where improved notch toughness is required

Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm

A516 Grade 70 Chemical Composition
Grade	The Element Max (%)
	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

 

Grade		A516 Grade 70 Mechanical Property
	Thickness	Yield	Tensile	Elongation
A516 grade 70	mm	Min Mpa	Mpa	Min  %
	6-40	260	485-620	21%
	40-100	260	485-620	17%

Materials and Manufacture Details for A516 Plates.The steel shall be killed and shall confirm to the fine austenitic grain size requirement of SPEC A20/A20M.

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 ℃].