Section Links :
| Home Page Specification Our Grades |
: : : |
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 |
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.
The steel has a wide range of uses including industrial boilers and pressure vessels, especially in environments where high temperature levels are common.
Equivalents
| BS | EN | ASTM/ASME | DIN |
| 620 B | 13 CRMO 45 | A387-12-2 | 13 CRMO 44 |
Specifications
Chromium & Molybdenum content (according to the ASTM specification):
| Designation | Nominal Chromium Content (%) |
Nominal Molybdenum Content (%) |
| A387 Grade 12 | 1.00% | 0.50% |
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 % | ––– |
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 |
Tension Test Requirements:
Material shall be tested using a test specimen will confirm to the tensile requirements as outlined in Table 2.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
To find out more about Masteel's services and ASTM A387 Grade 12 Class 2 steel plates which we can supply directly to you from stock or from the mill, click here to contact us.
Equivalent Grades :
Request a Callback :
Want to know more? Fill in the form below and click the button to contact us and we will call you right back...
| * Your name | : | |
| * Your company | : | |
| * Telephone no. | : | |
| * Country | : | |
| Steel required | : | |
|
|
Our Steel Products :
Please click on one of the links below...
Can't find the info you need?
The Masteel website has it's own search engine.
Simply enter the phrase you are looking for in the search box above (top left) and a set of site search results will be displayed.
If you still need further information, then please contact us – we will be pleased to help you.
Masteel UK Limited,
The Cedars, Coton Road,
Nether Whitacre, Coleshill,
Birmingham, West Midlands
B46 2HH
t: +44 (0)1675 437733
f: +44 (0)1675 437734
email: enquiries@masteel.co.uk
website: www.masteel.co.uk
blogsite: www.masteel.ning.com