AISI 4140 steel is Chrome-Moly High Tensile Steel which includes a minimum of .8%Cr,.15%Mo as strengthening alloy elements.The chromium content provides good hardness penetration, as well as the molybdenum content ensures uniform hardness and high strength. AISI 4140 steel can be oil hardened to a relatively top level of hardness using a tensile strength of 850 – AISI 4140 offers a really good balance of strength,toughness and wear-resistance.Compared with AISI 4130,it features a slightly higher carbon content which gives greater strength as well as heat treatment capabilities , nevertheless it is poor in weldability. Pre hardened and tempered 4140 may be further surface hardened by flame or induction hardening(can be surface hardened to your typical value 58HRC)and 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 easily be performed making use of the recommendations offered by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is commonly utilized for a variety of applications in the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who supply the oil, gas and petrochemical industry, require highest specification steels for use within the output of weldable steel pressure vessels and industrial boilers. 16Mo3, which is supplied under the EN 10028 euro norm specification, is one of these steels.
16Mo3 is a chrome molybdenum based steel that has excellent heat resistance and corrosion resistant characteristics. Therefore alone, the steel is a well-known in the manufacture of pressurised vessels and boilers. The content offers good welding properties when utilizing conventional welding methods and as a result of materials excellent heat resistance, 16Mo3 is also utilized in pipework for transporting hot liquids.
Added chromium in the steel boosts the corrosion resistance whilst the greater molybdenum content promotes the rise in potential to deal with elevated temperatures. 16Mo3 even offers good cold and hot forming properties and is normally delivered in ‘as rolled’ condition. Consideration should be made concerning the level of tensile strength required before procuring EN24 – whilst the fabric offers good overall tensile strength, this strength decreases as the temperature rises.
Equivalents for this steel grade can be found under both the ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 is additionally extensively used by the inshore and offshore industry. Material of this type normally comes with mill certification and stamping and further tests are normally supplied on the customers request. This can be achieved by vjrryg alternative party testing house or independently inspected through the customer.
The petrochemical industry sets very high demands for carbon steel grades utilized in their production facilities which is unsurprising given that the working environment is potentially this kind of hazardous one. The industry dictates quality standards for the usage of steel in these production plants with all the emphasis placed heavily on operational safety. Any material supplied must conform fully with all the test criteria specified etc criteria varies dependent on the particular kind of steel sought. Chrome Molybdenum is just one particular steel type which is popular in the industry.
About Chrome Molybdenum Steel – Also called C45E, this particular type of steel can be used for a number of purposes such as the fabrication of industrial boilers and pressure vessels. Chrome Moly has two key advantages. High temperature tensile strength – chrome moly is a perfect material for use in elevated temperature environments. Corrosion & Oxidation Resistance- chrome moly offers excellent effectiveness against the effects of corrosion and oxidation.
The steel itself is produced at the steel mill with higher amounts of chromium and molybdenum – the chromium provides the corrosion and oxidation resistance whilst the molybdenum offers heat resistance. It is therefore clear to find out why such a steel is popular inside the oil and gas industry where high working temperature in pressurized conditions are normal place.