ASME SA 387 GR 91 ALLOY PLATES


Where imperviousness to high temperature and great against corrosion attributes are needed, ASME SA387 Grade 91 Class 2 carbon alloy steel plate is a material to consider.

Due to the materials excellent corrosion resistant properties, SA387 Grade 91 is also an option for use in sour service environments. The material has good weldability and with its heat resistant qualities, the material is a highly versatile steel which can be used in numerous applications.

Vandan Steel & Engg. co. can supply SA387 Grade 91 steel plate from stock to global destinations with mill certification and stampings.

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EQUIVALENTS

BS EN ASTM/ASME DIN
... ... SA387-91-2 ...

SPECIFICATION CHROMIUM & MOLYBDENUM CONTENT ASME SPECIFICATION

Designation Nominal Chromium
Content (%)
Nominal Molybdenum
Content (%)
SA387 Grade 91 9.00% 1.00%

TENSILE REQUIREMENTS FOR CLASS 2 PLATES

Designation: Requirement: Grade 91
SA387 Grade 91 Tensile strength, ksi [MPA] 85 to 110 [585 to 760]
  Yield strength, min, ksi [MPa]/(0.2% offset) 60 [415]
  Elongation in 8 in. [200mm], min % ...
  Elongation in 2 in. [50mm], min, % 18
  Reduction of area, min % ...

CHEMICAL REQUIREMENTS

Element   Chemical Composition (%).
    SA387 Grade 91
Carbon: Heat Analysis: 0.08 - 0.12
  Product Analysis: 0.06 - 0.15
Manganese: Heat Analysis: 0.30 - 0.60
  Product Analysis: 0.25 - 0.66
Phosphorus: Heat Analysis: 0.020
  Product Analysis: 0.025
Sulphur (max): Heat Analysis: 0.010
  Product Analysis: 0.012
Silicon: Heat Analysis: 0.20 - 0.50
  Product Analysis: 0.18 - 0.56
Chromium: Heat Analysis: 8.00 - 9.50
  Product Analysis: 7.90 - 9.60
Molybdenum: Heat Analysis: 0.85 - 1.05
  Product Analysis: 0.80 - 1.10
Nickel, max: Heat Analysis: 0.40
  Product Analysis: 0.43
Vanadium: Heat Analysis: 0.18 - 0.25
  Product Analysis: 0.16 - 0.27
Columbium: Heat Analysis: 0.06 - 0.10
  Product Analysis: 0.05 - 0.11
Nitrogen: Heat Analysis: 0.030 - 0.070
  Product Analysis: 0.025 - 0.080
Aluminium: Heat Analysis: 0.02
  Product Analysis: 0.02
Titanium: Heat Analysis: 0.01
  Product Analysis: 0.01
Zirconium: Heat Analysis: 0.01
  Product Analysis: 0.01

Tension Test Requirements: The material shall be tested using a test specimen and will confirm to the tensile requirements as outlined in above table.


Other requirements: The following requirements and testing procedures (which are not mandatory) are considered suitable for Chrome Molybdenum steel:


   Vacuum treatment
   Product Analysis
   Additional Tension Test
   Charpy V-Notch Impact Test
   Drop Weight Test
   High Temperature Tension Test
   Ultrasonic Examination
   Magnetic Particle Examination

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