ASTM A387 Grade 11 Class 2 Steel Plate Manufacturers

A387 Gr 11 contains Chromium and Molybdenum as alloying elements to provide the heat and corrosion resistance than enables it to be used at high temperatures.

As a quality chrome moly steel, A387 Grade 11 Class 2 is used in a variety of industries and is highly effective, particularly in the oil, gas and chemical industry, where liquids and gases are often stored at high temperature (see pressure vessels).

ASTM A387 Grade 11 Class 2 Chemical Requirements:

Element		Chemical Composition (%) inc. Grade & UNS No.
		Grade 11 (UNS: K11789)
Carbon:	Heat Analysis:	0.05 - 0.17
	Product Analysis:	0.04 - 0.17
Manganese:	Heat Analysis:	0.40 - 0.65
	Product Analysis:	0.35 - 0.73
Phosphorus:	Heat Analysis:	0.035
	Product Analysis:	0.035
Sulphur (max):	Heat Analysis:	0.035
	Product Analysis:	0.035
Silicon:	Heat Analysis:	0.50 - 0.80
	Product Analysis:	0.44 - 0.86
Chromium:	Heat Analysis:	1.00 - 1.50
	Product Analysis:	0.94 - 1.56
Molybdenum:	Heat Analysis:	0.45 - 0.65
	Product Analysis:	0.45 - 0.70

Tensile Requirements for ASTM A387 Grade 11 Class 2:

Designation:	Requirement:	Grade11
A387 Grade 11	Tensile strength, ksi [MPa]	75 to 100 [515 to 690]
	Yield strength, min, ksi [MPa]/(0.2% offset)	43 [310]
	Elongation in 8 in. [200mm], min %	18
	Elongation in 2 in. [50mm], min, %	22
	Reduction of area, min %	–––

A387 Grade 11 is a chrome moly steel according to the ASTM/ASME A387 standard and is designed for use in welded boilers and pressure vessels used a elevated temperatures.