ASTM A387 Grade 12 Class 1 is a type of chromium - molybdenum alloy steel plate formulated for high - temperature and high - pressure scenarios, in line with the ASTM A387/A387M standard. It is widely applied in the manufacturing of pressure vessels and boiler equipment.
Chemical Composition
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A387 Gr.12 CL.1 Chemical Composition |
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Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
|
A387 Gr.12 Cl.1 |
0.04-0.17 |
0.13-0.45 |
0.35-0.73 |
0.035 |
0.035 |
0.74-1.21 |
0.40-0.65 |
Mechanical Property
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Grade |
A387 Gr.12 CL.1 Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
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|
A387 Gr.12 Cl.1 |
mm |
Min Mpa |
Mpa |
Min % |
|
t≦50 |
230 |
380-550 |
22 |
|
|
50<t≦200 |
- |
- |
18 |
|
applications
Petrochemical & Refining Industry
Fabrication of refinery reactors and fractionation towers for crude oil cracking and distillation under high-temperature and high-pressure conditions.
Power Generation Industry
Manufacturing of boiler drums and header pipes in thermal power plants to withstand high-pressure steam environments.
Oil & Gas Exploration and Transportation
Production of wellhead Christmas trees and blowout preventers (BOPs) for onshore and offshore oil and gas extraction operations.
Chemical Processing Industry
Construction of pressure vessels for fertilizer and synthetic resin production reactors with resistance to weak corrosive media at elevated temperatures.
Other Special Fields
Manufacturing of radiant tubes and furnace shells for high-temperature industrial heat treatment furnaces.
If you have project requirements for ASTM A387 Grade 12 Class 1 , we welcome your inquiry. GNEE maintains a large inventory of commonly used high strength steel grades for your selection.For detailed mechanical properties, chemical composition, and technical data, as well as free samples, please contact our factory immediately. We offer competitive prices, stable quality, and professional service. Email:beam@gneesteelgroup.com.
What is A387 gr 12 material?
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.
What is grade 12 steel?
Send Enquiry. Engineered for use in elevated temperature service, is a chrome molybdenum carbon alloy steel for use in weldable pressure vessels and industrial boilers.
What is the difference between ASTM A387 Grade 12 Class 1 and Class 2?
The main difference between ASTM A387 Grade 12 Class 1 and Class 2 is their mechanical properties (strength), not their chemical composition, with Class 2 offering higher tensile and yield strengths than Class 1 due to different heat treatments (typically quenching and tempering for Class 2 vs. normalizing/annealing for Class 1). This higher strength in Class 2 makes it suitable for more demanding, higher-stress, and high-temperature pressure vessel applications.