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ASTM A387 Grade 12 Class 2 Pressure Vessel Steel PLATE
1.Chrome Moly Plate Home Page
ASTM A387
ASTM A387 Grade 5 Class 2 | ASTM A387 Grade 9 Class 2 | ASTM A387 Grade 11 Class 2
ASTM A387 Grade 12 Class 2 | ASTM A387 Grade 22 Class 2 | ASTM A387 Grade 91 Class 2
2.We are stockists and suppliers of A387 Grade 12 Class 2 chrome molybdenum steel plates.A387 Grade 12 Class 2 is a high quality chrome molybdenum steel which is ideal for elevated temperature service and offers excellent anti corrosion characteristics.
3.The steel has a wide range of uses including industrial boilers and pressure vessels, especially in environments where high temperature levels are common.
4.Equivalents
|
BS |
EN |
ASTM/ASME |
DIN |
|
620 B |
13 CRMO 45 |
A387-12-2 |
13 CRMO 44 |
5.Specifications
Chromium & Molybdenum content (according to the ASTM specification):
|
Designation |
Nominal Chromium |
Nominal Molybdenum |
|
A387 Grade 12 |
1.00% |
0.50% |
6.Tensile Requirements for Class 2 Plates
|
Designation: |
Requirement: |
Grade 12 |
|
A387 Grade 12 |
Tensile strength, ksi [MPA] |
65 to 85 [450 to 585] |
|
|
Yield strength, min, ksi [MPa]/(0.2% offset) |
40 [275] |
|
|
Elongation in 8 in. [200mm], min % |
19 |
|
|
Elongation in 2 in. [50mm], min, % |
22 |
|
|
Reduction of area, min % |
––– |
7.Chemical Requirements
|
Element |
|
Chemical Composition (%) inc. Grade & UNS No. |
|
|
|
Grade 12 (UNS: K11757) |
|
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: |
0.15 - 0.40 |
|
|
Product Analysis: |
0.13 - 0.45 |
|
Chromium: |
Heat Analysis: |
0.80 - 1.15 |
|
|
Product Analysis: |
0.74 - 1.21 |
|
Molybdenum: |
Heat Analysis: |
0.45 - 0.60 |
|
|
Product Analysis: |
0.40 - 0.65 |
8.Tension Test Requirements:
We shall be tested using a test specimen will confirm to the tensile requirements as outlined in Table 2.
9.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
10.To find out more about our's services and ASTM A387 Grade 12 Class 2 steel plates which we can supply directly to you from stock or from the mill, Please contact us.
