4140 Round Bar Hardness

4140 responds readily to heat treatment and is relatively easy to machine in the heat treated condition.

4140 round bar hardness.

4140 is a 1 chromium molybdenum medium hardenability general purpose high tensile steel generally supplied hardened and tempered in the tensile range of 850 1000 mpa condition t 4140 is now available with improved machinability which greatly increases feeds and or speeds while also extending tool life without adversley affecting mechanical properties. Alloying elements and thermal treatments such as quenching and tempering greatly influence the hardness and strength of the steel. It provides good hardness penetration and the molybdenum imparts uniformity of hardness and high strength. Aisi 4140 steel bar steel plate flats supplier stockist and exporter.

Material 4140 heat treat. Aisi sae 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components like axles shafts bolts gears and other applications. The 4140 product is also available in a precision ground surface finish 25rms max. In the annealed condition bars are supplied to a hardness of hb 207 approximately.

This steel is offered in a wide range of conditions including but not limited to. Also known as chrome moly steel 4140 alloy steel resists fracturing from repeated stress. Shafts gears bolts studs connecting rods spindles tool holders. These sheets and bars are hardened for increased abrasion and impact resistance.

4140 alloy steel round responds well to heat treatment and is relatively easy to machine in the annealed condition. 4140 alloy steel round has good strength and wear resistance excellent toughness coupled with good ductility and the ability to resist. M k s 4140 steel round bar is a cold drawn annealed steel of relatively high hardenability due to its chromium content. 4140 alloy round bar.

Tempering 2 hour 205. Similar to alloy grade aisi 4130 chrome moly alloy steel but with a slightly higher. Some sizes may be calcium treated. It has a tensile strength of 150 000 psi yield strength of 130 000psi and approximately 35 45 elongation.

Typical tensile strength ranges from 114 000 psi annealed condition up to 156 000 psi pre hard quench and tempered condition. Temperature 4140 steel hardness. Aisi 4140 and 4150 is a medium carbon chromium molybdenum alloy steel. The purpose of the molybdenum is to add uniformity of hardness and strength to this alloy.

Cold drawn annealed hot roll heat treated heat treated turned ground and polished. 4140 alloy steel round is an cold drawn annealed steel of relatively high hardenability with its chromium content provides good hardness penetration and the molybdenum imparts uniformity of hardness and high strength.