AISI 4140 steel is Chrome-Moly High Tensile Steel that has 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 may be oil hardened to a relatively higher level of hardness using a tensile strength of 850 – DIN 1.7225 offers an excellent balance of strength,toughness and wear-resistance.In comparison with AISI 4130,it has a slightly higher carbon content that gives greater strength as well as heat treatment capabilities , however 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 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 utilizing the recommendations offered by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is often utilized for a variety of applications within the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who supply the oil, gas and petrochemical industry, require highest specification steels to use in the output of weldable steel pressure vessels and industrial boilers. 16Mo3, that is supplied beneath the EN 10028 euro norm specification, is just one of these steels.
16Mo3 is actually a chrome molybdenum based steel that has excellent heat resistance and corrosion resistant characteristics. Therefore alone, the steel is a popular in the creation of pressurised vessels and boilers. The material offers good welding properties when using conventional welding methods and due to the materials excellent heat resistance, 16Mo3 is also utilized in pipework for transporting hot liquids.
Added chromium in the steel raises 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 it is normally delivered in ‘as rolled’ condition. Consideration should be made concerning the degree of tensile strength required before procuring EN24 – whilst the content offers good overall tensile strength, this strength decreases because the temperature rises.
Equivalents with this steel grade can be obtained under both ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 is additionally extensively employed by the inshore and offshore industry. Material with this type normally includes mill certification and stamping and further testing is normally supplied on the customers request. This can be done by vjrryg alternative 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 which is unsurprising considering the fact that the working environment is potentially such a hazardous one. The industry dictates quality standards for the use of steel in 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 kind of steel sought. Chrome Molybdenum is just one particular steel type that is popular inside the industry.
About Chrome Molybdenum Steel – Also called AISI 1045, this kind of kind of steel is utilized for a number of purposes including the fabrication of industrial boilers and pressure vessels. Chrome Moly has two key advantages. High temperature tensile strength – chrome moly is an ideal material to be used in elevated temperature environments. Corrosion & Oxidation Resistance- chrome moly offers excellent effectiveness against the consequences of corrosion and oxidation.
The steel itself is produced at the steel mill with higher degrees of chromium and molybdenum – the chromium provides the corrosion and oxidation resistance whilst the molybdenum offers heat resistance. It is actually therefore clear to view why this kind of steel is popular inside the oil and gas industry where high working temperature in pressurized conditions are normal place.