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Crack In Alloy Steel Flange? - ResearchGate
Takeshi OGAWA's research works - ResearchGate | Find and ...

Takeshi OGAWA's 129 research works with 192 citations and 741 reads, including: Crack Growth Characteristics of Aluminum Alloys Dominated by the Mechanisms …

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FAILURE ANALYSIS OF WELDED STEAM BOILER FLANGE - …

Steam boiler flange made of carbon steel alloy ASTM A105 was failed at area adjacent to the welding zone when the operating pressure and temperature suddenly increased over than designed ones.

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Stainless Steel Alloy - an overview | ScienceDirect Topics

Neal Berke, in Handbook of Environmental Degradation of Materials (Second Edition), 2012. 11.8 Stainless Steel. A few studies exist on the performance of stainless steel alloys in concrete. 55–57 Though performance is improved significantly, depending upon the alloy used, initial costs are quite high. 57 Therefore, its use is limited. Furthermore, as will be shown later, there is an ...

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Crack in alloy steel flange? - ResearchGate

low alloy steel flange (2.25% Cr) was welded to carbon steel pipe (ASTM A106) by mistake and the welding was done by E7018 electrode. after that, we have noticed a longtudinal crack in HAZ of ...

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Steel Standards - ASTM International

Standard Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service: A540 / A540M - 15: Standard Specification for Alloy-Steel Bolting for Special Applications: A694 / A694M - 16

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Flange Bolt Applications in Corrosive and General Environments

In considering the more corrosion resistant 316 stainless steel bolting material available under B16.5 (see the above Table) the more cost effective is the A193-B8M Class 1. This is a low yield strength, 316 stainless steel bolt. Since the majority (it's probably safe to say 95%) of your facility’s flange …

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S. Tschumak's research works - ResearchGate | Find and ...

The crack growth behavior of low-alloy bainitic 51CrV4 steel was investigated. ... investigated both in an actual flange forming process and under idealized isothermal bainitic transformation ...

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Carbon Steel Bolts for All Alloys - Corrosion engineering ...

Is carbon steel nuts and bolts with PTFE coat suitable for all alloys suchas SS316, DSS (22% Cr), SDSS (25% Cr), Alloy 825 and Alloy 625? Our client accepts CS nuts and bolts even without coating for piping flanges and asks for CRA nuts and bolts used for valves. Also SS316 for non-wetted nuts and bolts are accepted for DSS/SDSS valves.

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Failure Analysis of Flange Crack - Yaang

The material used for the cracked flange is 304 stainless steel. Because of its excellent mechanical properties and corrosion resistance, the stainless steel is widely used in various corrosive environments, especially in the harsh marine environment, but the corrosion of stainless steel components and parts for a long time in this corrosive ...

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Copper-nickel Welding and Fabrication

2.0 The Alloys There are two main grades of copper-nickel alloy used in marine service - 90-10 (10% nickel) and 70-30 (30% nickel). The 70-30 alloy is stronger and has greater resistance to seawater flow; but 90-10 will provide good service for most applications and, being less expensive, tends to …

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Metallurgical Processes and Defects in Steel Products ...

Oct 10, 2016· Cracks – These are defined as a discontinuity produced either by tearing of the steel while in a plastic condition (hot crack) or by fracture when cold (cold crack). Cracks can occur in either the weld metal or parent steel. In weld metal they are classified as longitudinal, transverse, crater, and hairline cracks.

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Alloy 625 Weld Overlays for Offshore and Onshore Projects

- Smaller diameter Alloy 625 filltr metals allow zero crack weld deposits. - Small weld puddles are preferred to large ones in order to reduce stress cracking and bring the two expansion coefficients of the carbon steel base metal and Alloy 625 weld deposit: to a common ground.

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Inclusions and Laminations - Rolled Alloys, Inc.

Laminations are an imperfection in a steel or alloy, resulting from blisters, seams, foreign material, and/or scratches on an ingot or billet that are not repaired during the rolling process. Laminations can be: A rolled in lap on the surface of the metal, invisible when the product ships, but which opens up upon further work machining or rolling

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Carbon Steel Pipe Fittings and Mild Steel Pipe Fittings ...

Our offered range consists of best grade Carbon Steel Fittings, Carbon Steel Pipe Fittings, and Carbon Steel Tube. These products are designed with the use of best quality materials. Our products are appreciated for their features like longer life, easy to use, sturdy designs, many sizes available, and crack …

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What is a steel flange - OilVoice

ASME B31.1 says that when connecting flat face cast iron flanges to carbon steel flanges, the raised face on the carbon steel flange must be removed, and that a full face gasket is required. This is to keep the thin, bittle cast iron flange from being sprung into the gap caused by the raised face of the carbon steel flange.

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Materials Selection For High-Reliability Copper Alloy ...

In practice many systems are a mixture of these two logical approaches resulting in the high initial costs of one and the high maintenance costs of the other. For example, a plant which has experienced costly replacement to galvanized steel piping may replace it with copper alloy piping leaving valves fittings, etc., in carbon steel and cast iron.

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Alloy 625 Overlays on Carbon Steel - Cracking - Metal and ...

Feb 15, 2005· It is a fairly common practise to overlay carbon steel componenents with alloy 625. Valve seat pockets and flange ring grooves are two applications which I have encountered many times in the petrochemical industry. Recently, I heard about a crack like failure between overlay and carbon steel in a valve for sour gas service.

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Welding of Carbon and Low Alloy Steels and Hydrogen ...

Sep 23, 2016· These cracks, which are often caused by sulphur (S) and phosphorus (P), are more likely to occur in higher C alloy steels. Mostly, the base steel plate is their source. The susceptibility to cracking, based on weld composition, has been compared with empirical equations, such as UCS = 230 X % C + 190 X % S + 75 X % P + 45 X % Nb – 12.3 X % Si ...

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Should I weld my cracked aluminium wheel? - Precision Wheels

A crack inside the barrel is also inadvisable to weld. The direction of the crack: Most of the time, a crack on the back side of the wheel will cross the flange and bead area at right angles to the direction the wheel spins. This type of crack can be welded, because it can be opened up to accept the weld.

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List of ASTM International standards - Wikipedia

This is a list of ASTM International standards.Standard designations usually consist of a letter prefix and a sequentially assigned number. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted.

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Fastener Standards - ASTM International

Standard Specification for Alloy Steel Eyebolts : F835 - 20: Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws: F844 - 07a(2013) Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use: F912 - 11(2017) Standard Specification for Alloy Steel Socket Set Screws: F959 / F959M - 17a

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Stress Corrosion Cracking - Rolled Alloys, Inc.

Temperatures typically need be in excess of 120oF for SCC in stainless steel. When we consider chloride induced SCC in specialty alloys, the nickel content is a primary factor in the susceptibility of alloys. The following curve suggests the probability of an alloy to crack, based upon the nickel content of that alloy.

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Low Alloy Steel - an overview | ScienceDirect Topics

The low alloy steels include alloys with small additions of chrome and nickel up to the 11/13Cr steels with 4% nickel. The addition of these elements improves the high temperature performance and imparts some corrosion resistance. The addition of chrome and nickel improves the thermal stability of steel and makes these steels popular for applications which suffer wide temperature ranges ...

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Carbon Equivalant Calculator | American Piping Products

The American Piping Products carbon equivalent calculator allows for the measurement of what the carbon equivalent is for piping materials that are an alloy steel. Understanding the carbon equivalent of an alloy steel pipe is integral to a piping project, especially when welding will …

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How to Avoid Cracking in Aluminum Alloys

Alloy Content Chart. Fig 1. This figure shows the effects of four different alloy additions on the crack sensitivity of aluminum. Fig 2 Here are two GTAW (TIG) welds side by side made on a 6061-T6 base plate. The top weld was deposited with no filler alloy, and then subjected to liquid penetrant testing.

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Forge or quench crack? - Metal and Metallurgy engineering ...

Feb 14, 2011· Martensite formed in a steel with 0.47% C is going to be very hard and brittle and will crack due to these stresses. Conversely, the martensite formed in a steel with 0.25% C will not be as hard or brittle and will resist cracking in the same conditions.

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Copper and Copper Alloys Casting Problems

Cast copper alloys are used for applications such as bearings, bushings, gears, fittings, valve bodies, and miscellaneous components for the chemical processing industry. These alloys are poured into many types of castings such as sand, shell, investment, permanent …

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Failure Analysis of Flange Crack - Metal & Oil & Gas News

Dec 21, 2018· Abstract:There were many radial cracks on the stainless steel flange surface after storing for five years in Nibo. Marco and micro observation, chemical composition analysis and metallurgical examination were carried out to find out the failure cause. The results show that the fracture mode is stress corrosion. The material of the flange is 1Cr17Ni7, but ...

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Non Destructive Testing - Magnetic Particle Inspection (MPI)

EN 10246-18, Non-destructive testing of steel tubes - Part 18: Magnetic particle inspection of the tube ends of seamless and welded ferromagnetic steel tubes for the detection of laminar imperfections; American Society of Testing and Materials (ASTM) ASTM E1444-05; ASTM A 275/A 275M Test Method for Magnetic Particle Examination of Steel Forgings

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Guidelines for - Nickel Institute

4 Guidelines for the welded fabrication of nickel alloys for corrosion-resistant service Tables Table 1 Wrought nickel alloys by group . . . . . . . . . . . . .9

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Biggest defects of Investment Casting | Crack

3)The surface of the crack is oxidized and has no metallic luster. The crack surface of the steel casting is approximately black; 4)The crack ends are round and blunt, with significant oxidation and decarburization on both sides. Sometimes there are obvious …

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Filler Alloy Selection For Aluminum Welding

Alloy 2219 with 6.3% Cu shows good resistance to hot cracking because of its relatively narrow coherence range. Alloy 2024 contains approximately 4.5% Cu which may initially encourage us to suppose that it would have relatively low crack sensitivity. However, alloy 2024 also contains a small amount of Magnesium (Mg).

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Alloy 20 - Rolled Alloys, Inc.

Restricted carbon plus columbium stabilization permits welded fabrications to be used in corrosive environments, normally without post-weld heat treatment. At 33% nickel, Alloy 20 has practical immunity to chloride stress corrosion cracking. This alloy is often chosen to solve SCC problems, which may occur with 316L stainless.

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High Strength Aluminium Alloy - an overview ...

Steel and titanium alloys are used where higher strength or temperature capabilities are required and the weight penalty can be accepted. The main aluminium alloys are the precipitation hardening 2### and 7### series. In the former, the main alloying addition is copper and in …

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Repairing Cracked Steel Structures with Carbon Fiber ...

One special class of FRP with an incredible strength-to-weight ratio and stiffness is carbon-fiber-reinforced polymers (CFRP; see Figure 4), which have been successfully used to rehabilitate cracked steel structures. CFRP patches provide a solution to avoid the propagation of cracks in steel and concrete structures (see Figure 5).

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TROUBLESHOOTING CRACKS IN STEEL CASTINGS

Quench Crack Crack Morphology: Surface: a straight sharp crack with no branching Crack face: most of the crack face will be a fine trans-granular surface with a light tan or blue heat tint. The perimeter of the crack will have a curved edge. Inspect the crack face for chevrons that indicate crack origin. Inspect origin for pre-existing flaw or ...

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