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, as well as the molybdenum content ensures uniform hardness and high strength. AISI 4140 steel can be oil hardened to your relatively high level of hardness using a tensile strength of 850 – 42CrMo4 offers an excellent balance of strength,toughness and wear-resistance.In contrast to 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 some typical value 58HRC)and also by nitriding( Surface hardness achievable is 600 to 650HV).
AISI 4140 alloy steel has good machinability,operations such as turning, hobbing, drilling, sawing, broaching, tapping and milling can be simply performed utilizing the recommendations supplied by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is commonly utilized for a number 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 in the creation of weldable steel pressure vessels and industrial boilers. 16Mo3, which is supplied under 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 actually 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 used in pipework for transporting hot liquids.
Added chromium in the steel raises the corrosion resistance whilst the larger molybdenum content promotes the rise in effectiveness against elevated temperatures. 16Mo3 even offers good hot and cold forming properties and is also normally delivered in ‘as rolled’ condition. Consideration needs to be made concerning the amount of tensile strength required before procuring AISI 4340 – whilst the content offers good overall tensile strength, this strength decreases as the temperature rises.
Equivalents for this steel grade can be obtained under both the ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 is also extensively used by the inshore and offshore industry. Material of this type normally includes mill certification and stamping and further tests are normally supplied on the customers request. You can do this by vjrryg alternative party testing house or independently inspected through the customer.
The petrochemical industry sets extremely high demands for carbon steel grades used in their production facilities that is unsurprising considering the fact that the working environment is potentially such a hazardous one. The market dictates quality standards for using steel during these production plants with all the emphasis placed heavily on operational safety. Any material supplied must conform fully with all the test criteria specified and such criteria varies dependent on the particular form of steel sought. Chrome Molybdenum is certainly one particular steel type that is popular within the industry.
About Chrome Molybdenum Steel – Also known as C45E, this particular type of steel is used for a variety of purposes like 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 resistance to the results of corrosion and oxidation.
The steel is produced at the steel mill with higher levels 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 such a steel is popular in the oil and gas industry where high working temperature in pressurized conditions are typical place.