ASTM A387 GRADE 91 CLASS 2|A387 Gr.91 CL.2|A387GR91CL2 STEEL

ASTM A387 Gr 91 CL 2 is a chromium molybdenum alloy steel plate intended primarily for welded boiler and pressure vessels designed of elevated temperature service. The Cr content 2.25 % and the Mo content 1.00 %.

Each grade except grade 21L, Grade 22L, Grade 91 and Grade 911 is available in two classes of tensile strength levels. Grade 91 and Grade 911 are available only as Class 2.

Supplementary Technology:   HIC Test | NACE MR0175 | Z15 | Z25 | Z35 | S1 | S2 | S3 | S4
S5 | S6 | S7 | S8 | S9| S11 | S12 | S14 | S17

STEEL DIMENSION:

Thickness: 6MM to 300MM,

Width: 1500mm to 4050mm,

Length: 3000mm to 15000mm
Gnee steel is specialized in supplying ASTM steel plate in A387 Grade91 Class2. For more information of grade A387 Gr.91 Cl.2 steel plates, please check them in following:

A387 Gr.91 CL.2 Chemical Composition Element %

A387 Gr 91 CL 2	C	0.06-0.15	Ni	0.43	Nb	0.05-0.11
	Mn	0.25-0.66	Cr	7.90-9.60	AL	0.05
	P	0.025	Mo	0.80-1.10	Nitrogen	0.025-0.080
	S	0.012	B	–	Tungsten	–
	Si	0.18-0.56	V	0.16-0.27	AL	0.05

 

 

 

 

 

 

 

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

Grade	A387 Gr.91 CL.2Mechanical Property
	Thickness	Yield	Tensile	Elongation
A387 Gr.91 Cl.2	mm	Min Mpa	Mpa	Min  %
	t≦50	415	585-760	18
	50<t≦200	–	–	–