CHROME MOLYBDENUM STEEL (CHROMEMOLY) IDEAL FOR USE IN HIGH TEMPERATURE PROCESS PLANT APPLICATIONS
Chrome Moly Plate ASTM / ASME SA / A 387 – Gr.5 Cl. 2, Gr.11 Cl.2, Gr.12 Cl.2, Gr.22 Cl.2.
An Introduction to Chromium Molybdenum Steel :
Chromium Molybdenum Steel – frequently shortened to Chrome Moly – is a kind of low alloy steel used in a number of applications and industries. As the name suggests, the two key alloying elements are Molybdenum (Mo) and Chromium (Cr). These alloys are normally sorted into one main group, with names such as chrome croalloy, chromalloy, moly and CrMo often used. Industries where the alloy is common include Construction, Energy, Oil and Gas, and Automotive.
Why Cr and Mo?
For ages, Mo has been a standard alloying element used to produce creep-resistant steel capable of withstanding temperatures up to 530 °C. This is because Mo decreases the creep rate of steel successfully, and also slows the coagulation and coarsening of carbides during high-temperature use. Furthermore, this high-temperature suitability and creep-resistance mean the key application of Mo-based steel was in power generation and petrochemical plants.
However, continually increasing the Mo content of the steel in order to further improve its properties does not work since creep ductility actually decreases with increasing Mo. Another limitation refers to the fact that graphitization (breaking down of iron carbides) takes place above 500 °C. These drawbacks hinder the application of Mo-based steels.
A solution was discovered by alloying chromium with molybdenum. This gives the steel a number of advantages not found in Mo-based alloys, and CrMo steels were the first to allow steam temperatures in power stations to exceed 500 °C .
The reason this duo of alloying elements works so well is due to their combined properties (with a minimum Cr content of 9%, and a minimum Mo content of 1%). For example, Mo gives the steel higher working temperatures and added strength. Moreover, the Cr results in exceptional oxidation, and helps the steel resist corrosion in a more effective manner. The Cr also provides good hardness penetration, and the Mo content guarantees the hardness is uniform.
This added strength and corrosion resistance explains the fact that CrMo steel is employed when the strength provided by mild carbon steel is not enough. These benefits provide Chrome Moly added reliability, which is why it is used in so many different applications.
Applications of Chrome Moly Steel Grade :
For example, the added Tensile Strength and extra Corrosion Resistance means Chrome Moly is perfect for environments with an elevated temperature level (beyond that of simple Mo-based steels). So any applications or industries that operate equipment under high temperatures can benefit from using Chromium Molybdenum Alloys. These industries include energy, automotive, oil and gas, metal production, and forming equipment. With such a high temperature tensile strength and corrosion resistance, CrMo is also found to be effective in salt-water applications.
Examples of Equipment or Application that use chrome Moly include crack shafts, molds, chain links, machine shafts, bicycle tubing, drill collars and conveyors. The alloy’s properties also make it effective in manufacturing and construction. These properties include creep strength, hardenability, wear resistance, rigidity, good impact resistance, ease of fabrication, and the ability to be alloyed in ways that develop “fitness for use” in specific applications
Common Applications of Chrome Moly Steel :
The applications of Chromoly steels can be found in a variety of industries. They are very commonly used in automotive, bicycle, and heavy equipment parts, the oil and gas industry, metal production and forming equipment, and many other industries. Here are some more specific examples:
- Molds
- Pins
- Bicycle tubing
- Furnace equipment
- Crank shafts
- Chain links
- Drill collars
- Machine shafts
- Conveyors
- Tie rods
- Miscellaneous tooling
- Boilers
- Pressure vessels
- Heat exchangers
We Presinox Impex stock one of the most extensive ranges of Chrome Moly steel plate in Europe both to ASTM / ASME and EN10028-2. It is all available ex-stock for immediate delivery or shipping to your production facility. Chromium molybdenum plates fill an important gap between aluminum and stainless steel.
It is a lot heavier than aluminium but has far less corrosion resistance than Stainless steel. The reason it is so popular is that Chrome Moly Steel Plate is strong and formable. So it can be easily formed into pipes and fittings and rolled into pressure vessels and boilers without either the cost or the cracking that is seen in other materials
Chome Moly steel plate, formally known as Chrome Molybdenum, is usually sold as ASTM A387 or ASME SA387. A387 is alloy steel plate that is designed for use in pressure vessels, process vessels and boilers operating at high temperatures.
There are ten grades of Chromium Molybdenum Steel Plate A387 2, 12, 11, 22, 22L, 21, 21L, 9 and 91 specified by ASTM / ASME, though A387 grades 2, 21, 21L and 22L are generally not available at steel stockholders and have to be ordered in mill quantities. Chrome Moly grades 9 and 91 are also less popular and are often difficult to obtain.
We also have the EN10028-3 equivalents to A387 available – 16Mo3, 13CrMo4-5, 10CrMo 9-10 and 12CrMo 1.5.
CHROME MOLY STEEL PLATE GRADES AVAILABLE EX-STOCK
- ASTM / ASME A387 Grade 5 Class 2
- ASTM / ASME A387 Grade 11 Class 2
- ASTM / ASME A387 Grade 12 Class 2
- ASTM / ASME A387 Grade 22 Class 2
- 13CrMo 4-5
- 10CrMo 9-10
- 12CrMo9-10
- 16Mo3
- 15Mo3
Size range :
| Thickness | : | 6 mm - 100 mm |
| Widths | : | 1500 mm upto 2500 mm |
| Lengths | : | 6000 mm upto 12000 mm |
Chrome Molybdenum Steel (Chromemoly) ideal for use in high temperature process plant applications.
- Available in an extensive thickness range up to 100mm and lengths up to 12000mm and widths up to 2500mm.
- Chrome Molybdenum steel meets leading international specifications.
- ASTM/ASME SA/A 387 – Gr.5 Cl. 2, Gr.11 Cl.2, Gr.12 Cl.2, Gr.22 Cl.2.
- BS EN 10028-2 – 16Mo3, 13 CrMo Si 5-5, 13 CrMo 4-5, 10 CrMo 9-10.
Uses and Applications of Chrome Moly Steel Plates :
Chrome Moly steel plate is popular in the oil and gas industry for on and offshore production facilities because of the alloy’s key properties. It is also used extensively in the energy industry as a key component in power plants. It can be found in
- Boilers and pressure vessels,
- Heat exchangers
- Flanges, fittings and valves
- Ducting and pipe supports
Chrome Moly Steel Plate: High Tensile Strength at High Temperatures
Supply Area :
We Supply Our Chrome Moly Steel Plate to various countries like Saudi Arabia, Kuwait, Qatar, Oman, Yemen, UAE, Iran, Turkey, Kazakhstan, Greece, Singapore, Thailand, Indonesia, Vietnam, South Africa, South America, Brazil, India, Australia, and Egypt.