What is ASTM A387 Grade 11 Class 1 vs ASTM A387 Grade 11 Class 2?
ASTM A387 Grade 11 belongs to a standard chromium and molybdenum alloy grade. This makes them a choice for use in high pressure and temperature welded vessel grade. Designed near identical chemical compositions, these modules can be differentiated based on their mechanical strength. ASTM grade 11 class 1 is designed with a tensile strength between 415mpa up to 585mpa. They have yield strength of 240mpa. Similarly, ASTM grade 11 class 2 has a superior tensile strength between 485mpa up to 620mpa. The items have yield strength of 310mpa.
What is Alloy Steel Grade 11 Plate?
Alloy steel plate of grade 11 is designed with an outstanding concentration of chromium and molybdenum. The content allows these plates to possess enhanced corrosion and oxidation resistance properties. The Alloy grade 11 plates possess outstanding strength and mechanical properties making them a good choice in high temperature and reducing systems. They can be easily installed and have a longer service life with durability across stress-induced environments.
ASTM A387 Gr 11 Plate vs ASME Sa 387 Gr 11 Plate?
ASTM and ASME are two common grades of a sheet in the ASTM 387 Gr 11 range. These manufacturing types can be differentiated based on key features.
Specifications | ASTM / ASME A387 / SA387 |
---|---|
Technique | Hot Rolled |
Standard | ASTM, API and ASME |
Heat Treatment | Drawing-back/ Normalized |
Grade |
|
Classification | Alloy quality steel |
Type | Oil and offshore platform steel plate |
Form | Foils, Coils, Rolls, Shim Sheet, Plain Sheet, Perforated Sheet, Strip, Blank (Circle), Chequered Plate, Flats, Ring (Flange) |
Thickness | From 4mm to 300mm |
Hardness | Hard, Soft, Half Hard, Spring Hard, Quarter Hard, etc. |
Width | 1500mm upto 4200mm |
Length | 3000mm to 18000mm |
Finish | BA NO(8), Cold rolled sheet (CR), 2B, Hot rolled plate (HR), 2D, SATIN (Met with Plastic Coated) |
ASME Specification
Designation | Nominal Molybdenum Content (%) |
Nominal Chromium Content (%) |
---|---|---|
A387 Grade 11 | 0.50% | 1.25% |
Products | Thickness | Width | Length | Material | Type | Temper | Price |
---|---|---|---|---|---|---|---|
HOT ROLLED PRESSURE VESSEL QUALITY ALLOY STEEL PLATES GRADE: ASTM A387/11 SIZE: 6 X 2500 X 6000 MM (BIS LIC NO.CM/L-4100 | 1/40 in | 6 in | 12 in | Alloy Steel | General Purpose | Annealed | $5.02 / each |
ALLOY STEEL PLATES - ASTM A387 GRADE 11 CLASS 2 SIZE: 26MM OD X WIDTH:2213MM X LENGTH: 9688MM (PRESSURE VESSEL PLATES) | 1/40 in | 12 in | 24 in | Alloy Steel | General Purpose | Annealed | $19.37 / each |
ALLOY STEEL PLATES ASTM A387 GRADE 11 4FEET X 8 FEET X 6 MM | 1/40 in | 24 in | 24 in | Alloy Steel | General Purpose | Annealed | $31.16 / each |
NON ALLOY STEEL ASTM A387 P11 GRADE PLATE {WIDTH-1220 MM,LENGTH -2500 MM ,THICKNESS-10 MM} | 1/40 in | 36 in | 36 in | Alloy Steel | General Purpose | Annealed | $66.88 / each |
ALLOY STEEL PLATE- W: 4 FT, LENGTH: 8FT,THK: 16MM (ASTM A 387 GRADE 11 CL, 2 (NORMALISED & TEMPERED) SHEET, METAL) | 4/125 in | 6 in | 12 in | Alloy Steel | General Purpose | Annealed | $6.78 / each |
SHEET ASTM A387 GRADE 11. SIZE: 13MM THK X 4 X 8 | 4/125 in | 6 in | 36 in | Alloy Steel | General Purpose | Annealed | $20.36 / each |
Grade | Temperature, °F [°C] |
---|---|
22, 22L, 21, 21L and 9 | 1250 [675] |
2, 12 and 11 | 1150 [620] |
5 | 1300 [705] |
Size (in mm) | Size (in inches) |
---|---|
3.40mm | .134" |
3.96mm | .156" |
4.75mm | .187" |
6.35mm | .250" |
7.92mm | .312" |
9.53mm | .375" |
12.7mm | .500" |
15.9mm | .600" |
19.1mm | .750" |
22.2mm | .875" |
25.4mm | 1" |
28.6mm | 1.125" |
31.8mm | 1.250" |
38.1mm | 1.500" |
44.5mm | 1.750" |
50.8mm | 2" |
63.5mm | 2.500" |
76.2mm | 3" |
YIELD MPA | ELONGATION (50MM) | TENSILE MPA | REDUC'N OF AREA* |
---|---|---|---|
310min | 22%min | 515to 690 | - |
Density | Thickness | Plate Weight per Unit Area |
---|---|---|
0.315 lbs/in³8.72 g/cm³ | 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1/4 inches | 0.08 lbs/in²56.245568 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 3/4 inches | 0.235 lbs/in²165.221356 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1 inches | 0.313 lbs/in²220.0607848 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 2 inches | 0.627 lbs/in²440.8246392 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² |
0.315 lbs/in³8.72 g/cm³ | 3 inches | 0.941 lbs/in²661.5884936 kg/m² |
Element | Chemical Composition (%) | |
---|---|---|
A387 Grade 11 | ||
Manganese: | 0.40 - 0.65 | Heat Analysis: |
0.35 - 0.73 | Product Analysis: | |
Carbon: | 0.05 - 0.17 | Heat Analysis: |
0.04 - 0.17 | Product Analysis: | |
Phosphorus: | 0.035 | Heat Analysis: |
0.035 | Product Analysis: | |
Silicon: | 0.50 - 0.80 | Heat Analysis: |
0.44 - 0.86 | Product Analysis: | |
Chromium: | 1.00 - 1.50 | Heat Analysis: |
0.94 - 1.56 | Product Analysis: | |
Sulphur (max): | 0.035 | Heat Analysis: |
0.035 | Product Analysis: | |
Molybdenum: | 0.45 - 0.65 | Heat Analysis: |
0.45 - 0.70 | Product Analysis: |
BS | ASTM/ASME | EN | DIN |
---|---|---|---|
621 B | A387-11-1 | ––– | ––– |
Plate Surface finish | Width (max in) | Gauge (in) |
---|---|---|
BA Mexinox only | 48 | 18–28 |
2B – Cold rolled, heat treated, pickled, skin passed Plate | 72* | 10–24 |
Polished plate (not brushed) | 60 | 11–24 |
2D – Cold rolled, heat treated, pickled plate | 60 | 12–24 |
Temper rolled plate Mexinox only | 48 | 13–29 |
Designation: | Grade 11 | Requirement: |
---|---|---|
A387 Grade 11 | 75 to 100 [515 to 690] | Tensile strength, ksi [MPa] |
43 [310] | Yield strength, min, ksi [MPa]/(0.2% offset) | |
18 | Elongation in 8 in. [200mm], min % | |
22 | Elongation in 2 in. [50mm], min, % | |
––– | Reduction of area, min % |
ASTM A387 Grade 11 Plate | ASME SA387 Grade 11 Class 2 Chrome Moly Steel Plate |
ASTM A387 Grade 11 Class 1 Plate | ASTM A387 Grade 11 Alloy Steel Plate |
A387 Grade 11 Plate | ASTM A387 Gr 11 Plate |
SA 387 Gr 11 Cl 2 Plate | A387 Gr 11 Plate |
ASTM A387 Gr 11 Cl 1 Plate | Alloy Steel Grade 11 Plate |
ASTM A387 Grade 11 Alloy Steel Plates | A387 Grade 11 Cl 2 Sheet |
A387 Grade 11 Chromium Molybdenum Class 2 Plates | Sa 387 Gr 11 Sheet |
ASTM A387 Grade 11 Class 2 Plate | ASTM A387 Grade 11 Sheet |
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