Tianjin Bohai Metal Corporation

ASME SA 387 GRADE 11 Class 2 steel

Boiler Pressure Vessel Steel

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Commodity name: ASME SA 387 GRADE 11 Class 2 steel

Product introduction

As a pressure vessel grade steel for use in elevated temperature service, is used in a variety of industries and is highly effective, particularly in the oil, gas and petrochemical industry, where liquids and gases are often stored at higher temperatures.
The higher levels of chromium also provide excellent corrosion and oxidation resistance, which is a must in sour gas applications. Please refer to our technical specifications below for ASME SA387 Grade 11 Class 2.

Technical Data

Equivalents

BS	EN	ASTM/ASME	DIN
621 B	–––	SA387-11-2	–––

Specifications for ASME SA387 Grade 11 Alloy Steel Plates
Chromium & Molybdenum content (according to the ASME specification)

Designation	Nominal Chromium Content (%)	Nominal Molybdenum Content (%)
SA387 Grade 11	1.25%	0.50%

Tensile Requirements for ASME SA387 Grade 11 Alloy Steel Plates Class 2 Plates

Designation:	Requirement:	Grade 11
SA387 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 %	–––

Chemical Requirements for ASME SA387 Grade 11 Alloy Steel Plates

Element		Chemical Composition (%)
		SA387 Grade 11
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