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 the molybdenum content ensures uniform hardness and strength. AISI 4140 steel could be oil hardened to your relatively higher level of hardness with a tensile strength of 850 – AISI 4140 offers a really good balance of strength,toughness and wear-resistance.In comparison with AISI 4130,it features a slightly higher carbon content which gives greater strength and heat treatment capabilities , however it is poor in weldability. Pre hardened and tempered 4140 could be further surface hardened by flame or induction hardening(could be surface hardened to some 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 be easily performed using the recommendations provided by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is normally utilized for a variety of applications within the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who provide the oil, gas and petrochemical industry, require highest specification steels for use within the output of weldable steel pressure vessels and industrial boilers. 16Mo3, that is supplied beneath the EN 10028 euro norm specification, is one of these steels.
16Mo3 is a chrome molybdenum based steel which has excellent heat resistance and corrosion resistant characteristics. Because of this alone, the steel is actually a well known within the manufacture 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 utilized in pipework for transporting hot liquids.
Added chromium within the steel boosts the corrosion resistance whilst the larger molybdenum content promotes the rise in effectiveness against 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 EN24 – whilst the material 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 also extensively utilized by the inshore and offshore industry. Material of this type normally comes along with mill certification and stamping and additional testing is normally supplied on the customers request. You can do this by vjrryg 3rd party testing house or independently inspected by the customer.
The petrochemical industry sets very high demands for carbon steel grades used in their production facilities that is unsurprising given that the working environment is potentially such a hazardous one. The market dictates quality standards for the usage of steel within these production plants using 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 type of steel sought. Chrome Molybdenum is certainly one particular steel type that is popular within the industry.
About Chrome Molybdenum Steel – Also referred to as DIN 1.1191, this particular kind 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 perfect 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 is produced in the steel mill with higher degrees of chromium and molybdenum – the chromium supplies 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.