AISI 4140 steel is Chrome-Moly High Tensile Steel which has at the very least .8%Cr,.15%Mo as strengthening alloy elements.The chromium content provides good hardness penetration, and also the molybdenum content ensures uniform hardness and high strength. AISI 4140 steel can be oil hardened to a relatively higher level of hardness using a tensile strength of 850 – AISI 4140 offers a really good balance of strength,toughness and wear-resistance.In comparison with AISI 4130,it features a slightly higher carbon content which provides greater strength and also heat treatment capabilities , nonetheless it is poor in weldability. Pre hardened and tempered 4140 can be further surface hardened by flame or induction hardening(could be surface hardened to a typical value 58HRC)and also by nitriding( Surface hardness achievable is 600 to 650HV).
AISI 4140 alloy steel has good machinability,operations including turning, hobbing, drilling, sawing, broaching, tapping and milling can be easily performed making use of the recommendations offered by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is often utilized for many different applications in the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who provide you with the oil, gas and petrochemical industry, require the highest specification steels to use in the manufacture of weldable steel pressure vessels and industrial boilers. 16Mo3, which can be supplied beneath the EN 10028 euro norm specification, is among these steels.
16Mo3 is a chrome molybdenum based steel which has excellent heat resistance and corrosion resistant characteristics. Because of this alone, the steel is actually a well known within the manufacture of pressurised vessels and boilers. The material offers good welding properties when using conventional welding methods and as a result of materials excellent heat resistance, 16Mo3 is also used in pipework for transporting hot liquids.
Added chromium within the steel increases the corrosion resistance whilst the higher molybdenum content promotes the increase in resistance to elevated temperatures. 16Mo3 also offers good cold and warm forming properties and is normally delivered in ‘as rolled’ condition. Consideration needs to be made concerning the level of tensile strength required before procuring EN24 – whilst the content offers good overall tensile strength, this strength decreases as the temperature rises.
Equivalents with this steel grade can be found under the ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 can also be extensively used by the inshore and offshore industry. Material of the type normally includes mill certification and stamping and further tests are normally supplied on the customers request. You can do this by vjrryg third party testing house or independently inspected from the customer.
The petrochemical industry sets extremely high demands for carbon steel grades found in their production facilities that is unsurprising considering the fact that the working environment is potentially this kind of hazardous one. The market dictates quality standards for using steel during these production plants using the emphasis placed heavily on operational safety. Any material supplied must conform fully with the test criteria specified and the like criteria varies dependent on the particular form of steel sought. Chrome Molybdenum is just one particular steel type which is popular in the industry.
About Chrome Molybdenum Steel – Also called AISI 1045, this specific form of steel can be used for a variety of purposes including the fabrication of industrial boilers and pressure vessels. Chrome Moly has two key advantages. High temperature tensile strength – chrome moly is a perfect material to use in elevated temperature environments. Corrosion & Oxidation Resistance- chrome moly offers excellent potential to deal with the results of corrosion and oxidation.
The steel itself is produced in the steel mill with higher levels of chromium and molybdenum – the chromium supplies the corrosion and oxidation resistance whilst the molybdenum offers heat resistance. It really is therefore clear to find out why this type of steel is popular inside the oil and gas industry where high working temperature in pressurized conditions are normal place.