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AISI 4140 Alloy Steel (UNS G41400) - AZoM

Topics Covered[PDF]


resulting in a case hardness in excess of Rc 50.Parts should be heated as quickly as possible to the austenitic temperature range (840 C - 870 C) and "required case depth followed by an immediate oil or water quench, depending upon hardness required, workpiece" size/shape and quenching arrangements.

4140 Alloy Steel Data Sheet - Simply Tool Steel

4140 Alloy Steel Data Sheet. 4140 is an alloy steel that is supplied in either the annealed or prehardened condition. The prehardened condition is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 54. 4140 annealed is designated as 4140 Ann or simply 4140. 4140 HT is supplied in many forms such ...

AISI / SAE 4140 Alloy Steel - AISI 4140 Forgings | All ...

This heat treatment results in the formation of martensite after quenching, hence a great increase in hardness and tensile strength together with some loss of ductility. The steel should be austenitized at 1500 to 1550 º F (815 to 845 º C), the actual temperature being a function of chemical composition within the allowed range, section size ...

SAE 4140 - steel-grades

This page cover the Mechanical Properties, Chemical Element, Cross Reference of SAE 4140 steel grade.[PDF]

ASTM A 829 - SAE 4140 / SAE 4142 - Dillinger

ASTM A 829 - SAE 4140 / SAE 4142 CR MO-ALLOYED VACUUM DEGASSED STEELS Material data sheet edition December 2012 1) ASTM A 829 - SAE 4140 and ASTM A 829 - SAE 4142 are vacuum degassed fine grained steels which are ... The hardness values will be converted to tensile strength values in accordance with ASTM A 370. Testing * Heat analysis ...[PDF]


Hardness HB *up to 63 680 n 850 - 1000 14 - - 248 - 302 *up to 100 665 min 850 - 1000 15 54min 50min 248 - 302 ... HIGH TENSILE STEEL – AISI 4140 - continued WELDING: Readily welded in the annealed condition but avoid when possible if hardened and tempered due to …

AISI 4140 Steel Bar - Otai Special Steel

Hardness, Rockwell B (converted from Brinell hardness) 92: 92: Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13: 13: ... Welcome customers to inquiry AISI 4140 steel bar, plate, flat steel for the 4140 steel price. We are professional supplier and exporter for more than 20 years.

AISI 4140 Steel, oil quenched, 540°C (1000°F) temper, 25 ...

Property Data; This page displays only the text of a material data sheet. To see MatWeb's complete data sheet for this material (including material property data, metal compositions, material suppliers, etc), please click the button below.

scm440 steel hardness - alibaba

Alibaba offers 203 scm440 steel hardness products. About 9% of these are steel round bars. A wide variety of scm440 steel hardness options are available to you, such as astm, jis.

4140 Steel Plate | Precision Grinding, Inc.

Due to it’s good hardness penetration and uniformity flame hardening, induction hardening, or oil hardening can considerably increase the wear resistance of 4140 steel. 4140 PH has the same industry standard chemistry as 4140 plate HR plate but with an industry standard Rockwell C Hardness …

4340 Steel | 36CrNiMo4 | 1.6511 | EN24 | SNCM439 - Otai ...

Hardened and tempered 4340 alloy steel can also be nitrided, giving a surface hardness of up to Rc 60. Heat to 500°C – 530°C and hold for sufficient time (from 10 to 60 hours) to develop the depth of case.

Hardness of Heat Treated 4140 - Metal and Metallurgy ...

eng-tips› …› Metal and Metallurgy engineering› FAQsThe maximum hardness that can be obtained in any steel depends on carbon content. The section size in which maximum hardness can be obtained depends on alloy content. 4140 has a nominal carbon content of .4% and this carbon content will yield a hardness of Rc 51 for a 90% martensitic structure (9th Edition of the ASM Material Handbook,Volume I).[PDF]

4140 High tensile -

4140 High tensile Typical Analysis C Si Mn Ni Cr Mo S P (Ave. values %) 0.4 0.2 0.8 - 1.0 0.2 0.025 0.025 AS DIN BS AISI NEAREST STANDARD 4140 1.7225 41CrMo4 EN19A 4140 ... Hardness R 250 780-850 480 15 34 201-255 S 250 770-930 540 13 27 223-277 S 150 770-930 570 15 54 223-277 T 100 850-1000 665 13 54 248-302 ...

AISI 4140H Alloy Steel (UNS H41400) - Materials Engineering

Alloy steel is steel alloyed with different elements in total amounts between 1 and 50% by weight to enhance its mechanical properties such as strength, hardness, toughness and wear resistance.[PDF]

Alloys - Alro Steel | American Metal Supplier | Since 1948

Brinell Hardness ..... **302 Min *ETD 150® contains additives for improving machinability. These may be Tellurium, Selenium, Sulphur (.06 max), or others, separately or in combination. **In the event of disagreement between hardness and tensile strength, the tensile

SAE steel grades - Wikipedia

The SAE steel grades system is a standard alloy numbering systems for steel grades maintained by SAE International. In the 1930s and 1940s the American Iron and Steel Institute ... It can be hardened to approximately Rockwell 58 hardness, making it one of the hardest stainless steels. Due to its toughness and relatively low cost, most display ...Carbon steel·

SAE-AISI 4140 (SCM440, G41400) Cr-Mo Steel :: …

Brinell Hardness. 200 to 310. Elastic (Young's, Tensile) Modulus. 190 GPa 27 x 10 6 psi. Elongation at Break. 11 to 26 % Fatigue Strength. 360 to 650 MPa 53 to 94 x 10 3 psi. Poisson's Ratio. 0.29. Shear Modulus. 73 GPa 11 x 10 6 psi. Shear Strength. 410 to 660 …

4130 vs 4140 Steel Comparison | Capital Steel & Wire

4130 vs 4140 Steel Comparison. The following is a comparison of 4130 grade steel and 4140 grade steel. This information may be useful for machining purposes and as a resource for purchasing 4130 and 4140 steel. ... Brinell Hardness: 156: 197: The relative machinability Rating percentage based on SAE1212 as 100% is the following for cold drawn ...

4140 High Tensile Steel | Interlloy | Engineering Steels ...

4140 hardened and tempered bar can also be successfully nitrided, giving a surface hardness of up to Rc 60. Nitriding is carried out at 490 o C - 530 o C, followed by slow cooling (no quench) reducing the problem of distortion. Parts can therefore be machined to near final size, leaving a …

AISI 4140 - Howco

AISI 4140 low alloy steel containing Chromium and Molybdenum is the most widely used alloy for oil patch applications. Usually supplied in the hardened and tempered condition at 22 HRC max. it also finds favour in many applications requiring higher strength levels up to 150 KSI 0.2% PS.

4140 Steel Rounds | 4140 Steel Hexagon | SAE4140 …

Material Properties of SAE4140 steel for Fabrication and Heat Treatment. 4140 steel has the following properties. Machinability ... The hardness of the steel can be increased if it has lower tempering temperature. For example, tensile strength of 225 ksi cab be achieved by tempering at 316°C (600°F), and a tensile strength of 130 ksi can be ...[PDF]

Influence of Machining Parameters on Fatigue …

Influence of Machining Parameters on Fatigue Endurance Limit of AISI 4140 Steel The general purpose of this research is to study the influence of commercial machining parameters on fatigue limits of steels. Specifically in this work, the influence of cutting speeds, depth of cut, feed rate and residual stresses of turned surfaces of AISI 4140 steelPublished in: Journal of The Brazilian Society of Mechanical Sciences and Engineering · 2008Authors: Karina S S Lopes · Wisley Falco Sales · Ernani Sales PalmaAffiliation: Pontificia Universidade Catolica De Minas GeraisAbout: Surface roughness · Residual stress · Surface finish

MetalsDepot® - 4140 Alloy Steel Round Bar

4140 Alloy Round Bar. ... and the molybdenum imparts uniformity of hardness and high strength. 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, ...

Yield Strength - tppinfo

The correlation of hardness with tensile strength is generally good (difference usually less than ± 10 %) but the corresponding correlation of hardness with yield strength is somewhat less impressive but still reasonable (difference usually within ± 15 %). The yield strength is usually about 75-90% of the tensile strength for low alloy steels.

1045 vs 4140 Steel Comparison | Capital Steel & Wire

1045 vs 4140 Steel Comparison. Our 1045 and 4140 grade steels are both very popular options here at Capital Steel & Wire, and we often get questions related to their differences. 1045 and 4140 have distinct chemical and mechanical characteristics which make them valuable for different applications. ... Brinell Hardness ...

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