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Ask the Experts: ductile iron, cast iron, and stainless steel

Gray iron is upgraded to ductile iron, and ductile iron is upgraded to stainless steel. We want to help you understand the distinction so that you don’t replace a cast iron valve with another cast iron valve when you should be using stainless steel. As always, make sure to reference your CRF and regulation manuals before replacing parts to ...

Comparison of ductile iron vs steel | Penticton Foundry

Which Alloy is Better? Ductile Iron vs Steel. As we’ve already compared ductile iron castings to gray iron castings we thought we’d compare ductile iron and cast steel across a variety of properties to help determine which alloy is better for a given application. This blog is a simple, generic overview. We’ll take a look at tensile ...

Industry Comparisons | Ductile Iron vs Steel |

Key advantages of Ductile Iron Pipe: Ductile Iron Pipe is designed according to rigorous and prudent AWWA standards. Ductile Iron Pipe is typically manufactured with larger inside diameters than steel pipe, resulting in lower pumping costs–and an average 21% savings in energy costs.

AISI 316 Stainless Steel vs. Ductile Cast Iron ...

Both AISI 316 stainless steel and ductile cast iron are iron alloys. They have 67% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

Ductile vs. Cast Iron Valves: What's the Difference?

A few of these materials are PVC, carbon steel, stainless steel, cast iron, and ductile iron. In this post we will focus on two of those materials: ductile iron and cast iron. The argument of "ductile vs. cast iron valves" has been going on for decades, as not everyone knows the differences.

Steel versus Ductile iron - Saguenay foundry

Ductile iron and steel have similar mechanical properties. The difference in properties shouldn’t therefore influence the choice of one material over the other. Steel has better shock resistance than ductile iron. However, ductile iron has better vibration damping properties rendering ductile iron mechanical components noticeably quieter.

Ductile Iron vs Steel

The steel pipe can in fact be around 35% thinner than the ductile iron pipe. In understanding ductile iron vs carbon steel valves and ductile iron vs carbon steel corrosion, it is vital to note that ductile iron has superb yield strength, tensile strength and corrosion resistance, but such is not so with carbon steel …

Cast Steel vs Ductile Iron - Iron foundry

Cast Steel vs Ductile Iron. In the previous article, our dandong foundry has compared the cast iron and cast steel, herein, we will discuss cast steel versus ductile iron. 1. Chemical components Ductile iron chemical components include carbon content of 3.0% to 3.9%, but cast steel normally includes 0.08% to 0.60% carbon. So, ductile iron contains higher carbon content than cast steel.

Cast Iron vs Cast Steel | Metal Casting Blog

Ductile iron; Malleable iron; Wrought iron ; In metallurgy, stainless steel, also known as inox steel or inox from French inoxydable (inoxidizable), is a steel alloy, with a minimum of 11% chromium content by mass and a maximum of 1.2% carbon by mass. Stainless steels are most notable for their corrosion resistance, which increases with increasing chromium content. Additions of molybdenum ...

Ductile Iron Pipe vs. Steel Pipe - LMICO

DUCTILE IRON VS. STEEL PIPE By L. Gregg Horn, P.E., DIPRA Director of Regional Engineers and Mark R. Breslin, P.E., DIPRA Staff Engineer W hen Ductile Iron and steel pipe are bid against each other on transmission main projects, owners and engineers are often inundated with information relating to various aspects of these competitive materials. The

Ductile Iron with 304 Stainless Steel Straps Pipe Repair ...

Searching for Ductile Iron with 304 Stainless Steel Straps Pipe Repair Clamps? Grainger's got your back. Easy online ordering and next-day delivery available with 24/7 expert product support.

A Discussion of Steel Pipe versus Ductile Iron Pipe ...

A Discussion of Steel Pipe versus Ductile Iron Pipe Page 3 of 6 The superior beam strength of steel pipes is a key reason for its frequent selection over ductile iron pipe in seismic zones, as well as for stream and river crossings.

Cast Iron vs Cast Steel -

Jun 25, 2018· Many different types of metals can be cast, but iron and steel are two of the most widely used across a range of applications. Find out which one is best for your project. Learn more on Reliance ...

Comparison of the Mechanical Properties of Steel and ...

To demonstrate the distinguishing mechanical properties of steel and ductile iron, large diameter samples were gathered, cut, and subjected to mechanical property testing. A review of the results will validate the existence of distinct material properties and clearly indicate the need for unique design

Difference in Weight of Steel Versus Cast-Iron | Sciencing

Mar 13, 2018· Stainless steel has a low carbon content, but contains at least 10.5% of another element, chromium. This imparts the desired properties of stainless steel, chiefly erosion resistance. It also makes stainless steel the densest type of steel. Different types of stainless steel have densities slightly exceeding 8,000 kg/m^3


METAL USED IN THE MANUFACTURE OF VALVES AND FITTINGS Aluminum - A non-ferrous metal. Its chemical weight is ... Nickel-Plated Ductile Iron - Nickel coatings has received ... 400 Series Stainless Steel - An alloy of iron, carbon and chromium. This stainless is normally magnetic due to its martensitic structure and iron content. Four Hundred Series

Ductile Iron vs. Cast Iron | Castings Blog

All iron alloys poured in a foundry are cast iron. However, ductile is a relative newcomer compared to traditional cast white and grey irons. These alloys are what people generally mean by cast iron. Why might an engineer choose ductile iron vs cast iron?

Piping Materials & Galvanic Corrosion - Engineering ToolBox

1) Austenitic stainless steel with increased molybdenum content to increase resistance to corrosion compared to other 300 series alloys. Resist scaling at temperatures up to 1600 o F (871 o C). Used in industry, in marine environments and in a wide range of general industrial components. 2) Basic ferritic non-heat treatable stainless steel. Its strengths are in ductility, formability, good ...


DUCTILE VS. STEEL: MAKING THE BEST CHOICE By: Jerry Regula, National Product Engineer, McWane Ductile Initial consideration for a project involves determining the best product for the job. Upon weighing all the factors, we can all certainly agree that ductile iron is the best overall choice for water utility projects. DUCTILE IRON STEEL

Stainless Steel in Contact with Other Metallic Materials

Stainless Steel in Contact with Other Metallic Materials Diamant Building·Bd. A. Reyers 80·1030 Brussels·Belgium·Tel. +32270682-67·Fax -69·e-mail [email protected]· Materials and Applications Series, Volume 10 ISBN 978-2-87997-263-3

Ductile iron - Wikipedia

Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions.

Difference Between Ductile Iron & Malleable Iron | Hunker

Metal workers can draw out a 2-inch test sample of ductile iron by 18 to 30 percent more than its original length. By contrast, malleable iron elongates by only 10 percent. Ductile iron has a higher "yield strength" than malleable iron, meaning it can bear greater loads and higher temperatures.

Stainless steel flanges connecting to ductile iron valves ...

Jul 13, 2011· Ductile iron bodied valves are normally Rilsan coated across the flanges so , with the gasket, provide the electrical insulation required. Gasket needs to be selcted on design pressure. I have used many ductile iron gate valves in pump stations with stainless steel piping. I have not seen evidence of corrosion. Please check out photo on my website.


Mud Valve: Cast iron or cast 316 stainless steel Stem Guide: Ductile iron or cast 316 stainless steel Floorstand: Ductile iron (30" or 36") or cast 316 SS (36") Extension Stem: Carbon steel or stainless steel Wall Bracket: Ductile iron or cast 316 stainless steel Floor Box: Sealed or unsealed, cast iron or cast SS Stem Guide with Handwheel or 2 ...

A Corrosive Environment| Aquatics International Magazine

Stainless steel often is a disappointing material because the expectation is that stainless means no corrosion or staining. Unfortunately, stainless steel is subject to staining, corrosion or even failure under the right conditions. ... Carbon steel, cast iron and ductile iron can be coated with paint, but this is typically a short-lived ...

Underground Pipe; Ductile Iron Pipe vs K Copper Pipe

Jul 30, 2019· I had to repair a leak on a 6" underground cast iron water main. Seems a limestone had been up against it all those years and corroded a hole in it. By the time we got the water off it was a 30' geyser. Bought a stainless band that goes around the pipe and gets bolted together.

Ductile Iron vs. Carbon Steel Body,Gate Valve, News

A carbon steel valve body (for ball valves) be more suitable or equal to a ductile iron body for a glycol-water based coolant system for cooling a large diesel engine? Both the carbon steel and ductile iron could be used. Under equal circumstances the best (material-wise) should be used, which is the nodular cast iron.

Rubber lined pipe vs. duplex stainless

Rubber lined pipe vs. duplex stainless. Home FAQs Suggested Books Help Wanteds Advertise on this site FORUM ... they have specified very expensive duplex stainless steel when others are saying rubber lined carbon steel will be adequate; can you comment? ... An Alloy of Ductile iron has been used for many years for seawater piping. It has been ...

cast iron vs cast steel id -

Mar 04, 2005· Stainless Join Date Jan 2002 Location home Posts 1,025 Post Thanks / Like Likes (Given) 0 ... As far as crank shafts go there is a difference between iron, ductile iron, cast steel & forged steel. The only thing missing in the question is the alloy of …

Pipe Fittings | Flanged Ductile / Cast Iron Flange - 90 ...

FREE SHIPPING Orders Over $99! Shop now for great pricing on pipe fittings. This category contains 125# cast iron and 150# ductile iron flange fittings & 90 degree elbows.

Selection of JCM Stainless Steel Tapping Sleeves

JCM 452 All Stainless Steel Tapping Sleeve - with outlet seal gasket. • Recommended for pipe not susceptible to breakage. Includes ductile iron, PVC, steel, polyethylene and fiberglass. Also recommended for larger cast iron pipe, reduced taps on all types of pipe and for applications with fluctuating pressure variations.

ductile iron investment casting, Investment Casting

Those ductile iron investment casting are produced normally by sodium silicate lost wax casting process. One area of potential confusion is the number of ways ductile iron is described. All of the following are used and are interchangeable - Ductile Iron, Ductile Cast Iron, SG, SG Iron, Spheroidal Graphite and Spheroidal Graphite Cast Iron.

What is black iron? - Finishing

Jun 30, 2008· If you go to a plumbing supplier and ask for black iron pipe you get ductile iron pipe, which is gray and easy to thread. Steel pipe can be used for some pressure application and as structural members. Black iron pipe is only for pressure not for structural. Personally I don't know how you can call steel pipe black iron, just confusing everyone.

Cast Iron Exhaust Manifold Vs. Cast Steel Exhaust Manifold

Cast Iron Exhaust Manifold Vs. Cast Steel Exhaust Manifold. You have had your truck for many years now and during routine maintenance of your vehicle you realize that your exhaust manifold is leaking. Let's say it's at a point where you can't repair the leak, which means you have to replace it.

Ductile Iron Data - Section 10

In the past 40 years the use of Ductile Iron has grown rapidly, mainly through conversions from Gray and Malleable Iron castings and steelcastings, forgings and fabrications but also through its use in new components designed with Ductile Iron. Ductile Iron has been successful because it has offered the design engineer a combination of ...

Cast Steel vs Ductile Iron - ArticleSlash

Nov 22, 2011· Cast steel and ductile iron do not have big difference with tensile strength, clients can choose different material grades to meet their application, however, ductile iron has highest yield strength of 40k psi, but cast steel only can reach 36k psi. So, as for the equable grades, ductile cast iron has higher yield strength. Therefore, ductile ...

How you connect carbon steel with ductile iron - Answers

The more carbon, the harder, less ductile the steel. Stainless steel is Carbon, Iron and Chromium, that is galvinized (diped into zinc, which corrodes the outer layer of stainless steel,) making ...