Quick Facts. EN 1.4034 / AISI 420 (UNS S42000) is a high carbon martensitic stainless steel, it can be hardened through heat treatment to achieve hardness greater than that of grade 1.4031, due to the higher carbon content. Corrosion resistance can also be optimized by polishing the material surfaces in hardened condition.

The AISI 420 stainless steel round bar with a diameter of 20 mm was heated to 980 °C for 1 h at a heating rate of 10 °C/min. After being discharged, it was quickly cooled it to room temperature in the oil, then reheated to 600 °C and 700 °C, heat-cooled for 2.5 h, and cooled to room temperature naturally. ...

Introduction. AISI 420 (UNS S42000) is a heat treatable martensitic chromium stainless steel (nominal composition: Chromium 12–14%, Manganese 1.0% max, Carbon .15% min, Silicon 1.0 max%, Iron Balance) that is seldom used in cryogenic systems: due to the typical brittleness of martensitic steels at low temperatures, austenitic steels are …

This type of AISI 420 stainless steel type contains 0.16% carbon, 13% chromium, and less nickel. It is more corrosion-resistant than AISI 420A because it contains more chromium. Applications that call for …

AISI 420, for example at a given stress amplitude of 500 MPa, the fatigue lifetime of the non-deep-rolled condition was about 133,000 cycles, whereas the deep rolled specimen was cyclically deformed till 107 cycles without failure. Figure 2. S/N curves of non- and deep rolled martensitic stainless steel AISI 420.

In the previous work of our group, we investigated the microstructure and mechanical performance of hybrid 420/CX SS parts 19. Accordingly, AISI 420 steel was used as a base, and CX SS as ...

Oil quenching is usually preferred for heavy metal sections. Tempering is performed at 150 to 370°C to achieve high hardness and good mechanical properties. Grade 420 should not be tempered between 425 and 600°C. Welding. Grade 420 stainless steels are welded using welding rods, coated with grade 420 metals, to achieve high …

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AISI 420 stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. 420 is the AISI designation for this material. S42000 is the UNS number. Additionally, the British Standard (BS) designation is 420S29. It can have a moderately low ductility and has a moderately high electrical conductivity among ...

AISI 420 stainless steel, a martensitic steel, is a widely used material in tooling applications as it offers high strength, hardness and corrosion properties. ... The magnetic properties of these steels have been investigated as a function of temperature between 300 and 400 K and applied magnetic field of ± 4 T. We observed improved …

In this research, the effect of rapid tempering on the microstructure, mechanical properties and corrosion resistance of AISI 420 martensitic stainless steel has been investigated. At first, all test specimens were austenitized at 1050 °C for 1 h and tempered at 200 °C for 1 h. Then, the samples were rapidly reheated by a salt bath …

The relative density of the as-built SLM 420 stainless steel was measured to be 99.8% by the Archimedes method. The scanning electron micrographs of as-built SLM 420 in Fig. 1 (a) shows a cellular microstructure with martensite needles in random orientation. The higher magnification micrograph in Fig. 1 (b) shows that the cells are of …

The duplex treatment of AISI 420 steel samples by nitriding in a radiofrequency inductively coupled plasma (RF-ICP) discharge of Ar + N2 + H2 atmosphere followed by CrAlN coating deposition was performed in this study. The influence of plasma nitriding (PN) duration (10, 20, 40, and 60 min) on the structural and functional properties …

White layer thickness of nitrided AISI 420 stainless steel as a function of nitriding temperature. Download : Download high-res image (840KB) Download : Download full-size image; Fig. 6. SEM image (a), (b) and element distribution (c), (d) of nitrided layer produced on AISI 420 stainless steel by plasma nitriding at 450 and 510 °C for 4 h.

420 Stainless Steel [Material Data Sheet] COMPOSITION % (AISI/SAE 4140) Fe Balance C 0.15 – 0.25 Cr 12 – 14 P 0.04 (max) Mn 1.0 (max) Si 1.0 (max) S 0.03 (max) MECHANICAL PROPERTIES Production System™ MPIF 35 MPIF 35 Standard Heat Treated (minimum) Heat Treated (typical) Ultimate tensile strength 1 (MPa) Tempered ASTM E8M 1,500 ± …

AISI 420 is a low-chromium member of the martensitic family of stainless steels and is commercially available in a low-carbon version (with a specified carbon content of less than 0.15%), and a medium-carbon version (with a maximum carbon content of 0.5%). ... The average carbide diameters of the two heats are shown in Fig. 20, as a …

420 WNR 1.4021 AISI 420 GRADE 420 UNS S42000 Carbon Manganese Phosphorus Sulfur Silicon Chromium Mechanical Properties SS 420 0.2% YS ksi (Mpa) Reduction in Area, % SS 420, Type 420, WNR 1.4021, UNS S42000, AISI 420, Grade 420, AFNOR Z20C13 SS 420 AFNOR Z20C13 TYPE 420 WNR 1.4021 AISI 420 GRADE 420 UNS …

The deep-rolling, mechanical surface treatment was modified by applying heat during operation on the martensitic stainless steel AISI 420. Fatigue performance of the high-temperature deep-rolled condition was investigated and compared with the non-surface-treated and room-temperature deep-rolled conditions. Thermal and mechanical …

The present paper reports the experimental results on martensitic stainless steel low-temperature plasma assisted carburizing kinetics. The treatments were carried out using a gas mixture of 99.5% (80% H 2 + 20% Ar) + 0.5% CH 4 at temperatures of 623, 673, 723 and 773 K and for times of 4, 8, 12 and 16 h. The peak voltage and the …

AISI 420 stainless steel was nitrided at low temperatures and anodic potential in a plasma atmosphere of ammonia (NH 3) assisted by hollow cathode discharge.The specimens were placed on a worktable connected to the wall of vacuum chamber that was earthed (0 V) and used as anode of glow discharge.Plasma nitriding …

In this study we evaluate the sintered properties of 420 made from both PA and MA+CIP routes as a function of sintering cycle and sintering atmosphere. Published data for as …

The temperature influence on the structural and mechanical properties of AISI 420 stainless steel is studied. The iron-based alloy underwent normalizing at three temperatures 975, 1025, and 1075°C for 1 h, followed by annealing at temperatures ranging from 250 to 650°C for 2 h. At both treatment stages, steel is air-cooled. The material was …

We studied martensitic stainless steel AISI 420, modified using glow discharge plasma nitriding. Microhardness measurements, X-ray diffraction (XRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) were used to investigate the surface microhardness, crystal …

mechanical properties of AISI 420 steel and to study the links with the microstructural evolutions by using several techniques of analysis and observation. 1. Experimental. 1.1. …

Common trade names for stainless 420 include: AISI 420, Alloy 420, 420 stainless steel, UNS S42000, and Ruetom Special 420 SS. For more information, see …

The material used in this study is an AISI 420 martensitic stainless-steel plate, whose chemical composition, as provided by the manufacturer, is shown in Table 1. Specimens with the dimension of 40 mm × 40 mm × 10 mm were subjected to a vacuum stress relief heat treatment at 650 °C for 2 h.

AISI 420 Stainless Steel (SS420), UNS S42000. AISI 420 stainless steel (SS420) is a straight chromium martensitic stainless steel grade with certain wear resistance, …

The martensitic stainless steel AISI 420 has been widely used in manufacturing turbine blades because of its excellent mechanical properties and high …

Additive manufacturing of AISI 420 stainless steel: process validation, defect analysis and mechanical characterization in different process and post-process …

Low-temperature plasma nitrocarburizing was performed in order to study the effect of treatment temperature and time on the microstructure, mechanical properties and growth kinetics of the AISI 420 martensitic stainless steel treated layers. Plasma nitrocarburizing was carried out using DC-pulsed power supply in a 71% N 2 + 18% H 2 …