AISI 4140 steel is Chrome-Moly High Tensile Steel that has at 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 strength. AISI 4140 steel may be oil hardened to your relatively top level of hardness using a tensile strength of 850 – DIN 1.7225 offers a really good balance of strength,toughness and wear-resistance.Compared with AISI 4130,it possesses a slightly higher carbon content that gives greater strength and also heat treatment capabilities , nonetheless it is poor in weldability. Pre hardened and tempered 4140 could be further surface hardened by flame or induction hardening(can be surface hardened to a typical value 58HRC)and through 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 easily be performed making use of the recommendations provided by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is normally utilized for a number of applications in the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who provide the oil, gas and petrochemical industry, require highest specification steels to be used within 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 actually 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 using conventional welding methods and due to the materials excellent heat resistance, 16Mo3 is also utilized in pipework for transporting hot liquids.
Added chromium inside the steel increases the corrosion resistance whilst the larger molybdenum content promotes the rise in potential to deal with elevated temperatures. 16Mo3 also has good hot and cold forming properties and it is normally delivered in ‘as rolled’ condition. Consideration needs to be made concerning the degree of tensile strength required before procuring AISI 4340 – whilst the material offers good overall tensile strength, this strength decreases as the temperature rises.
Equivalents with this steel grade can be found under both ASTM and ASME steel specifications for chrome moly (A387 and SA387 respectively). 16Mo3 is additionally extensively utilized by the inshore and offshore industry. Material of the type normally comes along with mill certification and stamping and further testing is normally supplied on the customers request. You can do this by vjrryg 3rd party testing house or independently inspected from the customer.
The petrochemical industry sets very high demands for carbon steel grades found in their production facilities which can be unsurprising considering the fact that the working environment is potentially this kind of hazardous one. The industry dictates quality standards for the use of 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 such criteria varies dependent on the particular type of steel sought. Chrome Molybdenum is one particular steel type which is popular in the industry.
About Chrome Molybdenum Steel – Also known as DIN 1.1191, this kind of type of steel is utilized for a variety 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 an ideal material for use in elevated temperature environments. Corrosion & Oxidation Resistance- chrome moly offers excellent effectiveness against the consequences of corrosion and oxidation.
The steel is produced on the steel mill with higher amounts of chromium and molybdenum – the chromium offers the corrosion and oxidation resistance whilst the molybdenum offers heat resistance. It really is therefore clear to find out why this kind of steel is popular within the oil and gas industry where high working temperature in pressurized conditions are typical place.