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 some relatively top 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 which gives greater strength and also heat treatment capabilities , nevertheless it is poor in weldability. Pre hardened and tempered 4140 may be further surface hardened by flame or induction hardening(can 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 such as turning, hobbing, drilling, sawing, broaching, tapping and milling can be simply performed utilizing the recommendations offered by the machine’s manufacturer for ideal tool type-feeds and speeds. AISI 4140 is commonly utilized for a number of applications within the oil and gas ,aerospace,automotive, agricultural and defense industries.
Worldwide fabricators who supply the oil, gas and petrochemical industry, require the highest specification steels to use within the output of weldable steel pressure vessels and industrial boilers. 16Mo3, that is supplied underneath 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 popular in the manufacture of pressurised vessels and boilers. The material offers good welding properties when utilizing conventional welding methods and because of the materials excellent heat resistance, 16Mo3 is also found in pipework for transporting hot liquids.
Added chromium in the steel boosts the corrosion resistance whilst the greater molybdenum content promotes the increase in effectiveness against elevated temperatures. 16Mo3 also has good cold and warm forming properties and it is normally delivered in ‘as rolled’ condition. Consideration should be made concerning the level of tensile strength required before procuring DIN 1.6565 – whilst the fabric offers good overall tensile strength, this strength decreases since 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 additionally extensively utilized by the inshore and offshore industry. Material with this type normally comes 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 through 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 market dictates quality standards for using steel during these production plants with the emphasis placed heavily on operational safety. Any material supplied must conform fully with the test criteria specified etc criteria varies dependent on the particular type of steel sought. Chrome Molybdenum is one particular steel type that is popular within the industry.
About Chrome Molybdenum Steel – Also referred to as C45E, this kind of form 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 to use in elevated temperature environments. Corrosion & Oxidation Resistance- chrome moly offers excellent effectiveness against the effects of corrosion and oxidation.
The steel itself is produced in 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 view why such a steel is popular inside the oil and gas industry where high working temperature in pressurized conditions are common place.