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, and also the molybdenum content ensures uniform hardness and strength. AISI 4140 steel may be oil hardened to a relatively higher level of hardness having a tensile strength of 850 – 42CrMo4 offers an excellent balance of strength,toughness and wear-resistance.In contrast to AISI 4130,it features a slightly higher carbon content which provides 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(may be surface hardened to your 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 supplied by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is commonly employed for a number of applications inside 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 for use inside the output of weldable steel pressure vessels and industrial boilers. 16Mo3, which can be supplied underneath the EN 10028 euro norm specification, is among these steels.
16Mo3 is actually a chrome molybdenum based steel which has excellent heat resistance and corrosion resistant characteristics. Because of this alone, the steel is a well known in the creation of pressurised vessels and boilers. The material offers good welding properties when you use conventional welding methods and due to the materials excellent heat resistance, 16Mo3 is also found in pipework for transporting hot liquids.
Added chromium within the steel increases the corrosion resistance whilst the greater molybdenum content promotes the rise in resistance to elevated temperatures. 16Mo3 also offers good cold and warm forming properties and it is normally delivered in ‘as rolled’ condition. Consideration ought to be made concerning the amount of tensile strength required before procuring AISI 4340 – whilst the fabric offers good overall tensile strength, this strength decreases because the temperature rises.
Equivalents for this steel grade are available under both ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 is also extensively utilized by the inshore and offshore industry. Material of this type normally comes along with mill certification and stamping and further tests are normally supplied on the customers request. This can be done by vjrryg alternative party testing house or independently inspected through the customer.
The petrochemical industry sets high demands for carbon steel grades used in their production facilities which can be unsurprising given that the working environment is potentially such a hazardous one. The business dictates quality standards for the use of steel during these production plants with the emphasis placed heavily on operational safety. Any material supplied must conform fully using the test criteria specified and the like criteria varies dependent on the particular kind of steel sought. Chrome Molybdenum is one particular steel type that is popular within the industry.
About Chrome Molybdenum Steel – Also called C45E, this particular form of steel is used 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 a great 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 on the steel mill with higher degrees of chromium and molybdenum – the chromium offers the corrosion and oxidation resistance whilst the molybdenum offers heat resistance. It is actually therefore clear to see why this type of steel is popular within the oil and gas industry where high working temperature in pressurized conditions are normal place.