Rolled Alloys Blog

Machinability Guidelines and Comparisons

An often asked question is how to compare machinability of different alloys. The answer is available here on our website. The key column is relative machinability, listing speed as a percentage more

Rolled Alloys Lab Services

Rolled Alloys Metallurgical Services (RAMS) is dedicated to our customers and can provide the following services at no cost: Failure analyses:  we have more than 60 years of technical more

Duplex Grain Size in Austenitic and Nickel Based Super-alloys

Metals have a crystalline structure. When a metal solidifies from the molten state, a multitude of tiny crystals start to grow. These crystals form the grains in the solid metal.  As a wrought more

Temperature Limits - What Do They Really Mean?

Data sheets for most heat resistant alloys list a temperature limit. What does this temperature limit really mean? Can material always be used up to that temperature limit? The answer is: it depends. more

Utilizing our Weld Wire Selection Tool

Rolled Alloys provides an online tool; the Weld Wire Selector to help determine the best wire options when welding. When visiting, select Weld Wire Selection from the tools menu more

NACE MR0175/ISO 15156/NACE MR0103

NACE International has developed two significant standards relative to the use of materials in hydrogen sulfide bearing environments. One is titled MR0175/ISO 15156, Petroleum and Natural Gas more

CORROSION 2015 Conference

Rolled Alloys has been a long time participant in NACE® International – The Worldwide Corrosion Authority. NACE International was founded in 1943 by a group of corrosion engineers involved more

Pipe Sizes and Tolerances

Steel pipe sizes around the world are standardized on  historic dimensions that are now referred to as Nominal Pipe Sizes (NPS). In addition to standardizing the nominal outside diameter (OD), a more

Facts About LME

LME – No, we’re not talking about the London Metal Exchange!  LME in this case stands for Liquid Metal Embrittlement. Molten metal can cause a variety of problems in a range of more

Dual Certification

The term "dual certification" is most commonly used to refer to the practice of certifying a material as meeting the requirements of a specification(s) as two different alloys. The most common more

The Unified Numbering System

The Unified Numbering System (UNS) is an alloy identification system created in the early 1970’s and formalized with the issuance of joint standard ASTM E527 and SAE J1086 in August of 1974. more

Why? Why? Why? 316Ti – UNS S31635

It is common to find a connection to a German equipment manufacturer or design. However, 316Ti is practically non-existent in North American inventory, and usually requires a mill production run. more

Bar Product Terminology and Finish

The terminology used for bar products is occasionally misunderstood. General requirements, such as those for tolerances, marking, packaging, etc., are standardized in ASTM A484 for stainless bar more

RAMS Blog – Seeking Your Advice

Within these areas we have touched on properties and applications of established and newer alloys.  We have discussed issues to consider when ordering material, such as flatness and standard more

Pitting Corrosion

What is pitting corrosion and how does it happen? Pitting corrosion is in itself a corrosion mechanism, but is also a form of corrosion often associated with other types of corrosion mechanisms. It more

The Debate: Cast vs Wrought, Which is Better?

Both castings and wrought alloys have their place in the heat treating world, but learn where and when to use each. For example, cast materials typically have higher yield, tensile and creep more

RA330: Over 60 Years of Proven Success in the Heat Treat Industry

RA330 has a proven history for use in high temperature applications, and is a very versatile material.  With a nominal composition of 35 Ni and 19 Cr, chemically it is more than a stainless more

High Temperature Creep Rates and Creep Rupture

Creep-Rupture Why short term yield and tensile properties may not be useful at high temperatures. Metals behave much differently at high temperatures than they do near room temperature. If a metal more

Plate Product Thickness Variations

With the increased capability of hot mills to rolls heavy coil (up to ½” thick) product in stainless and nickel alloys, has come an increased awareness of the thickness variations that more

Plate and Sheet Flatness

We would prefer if all plate and sheet were “flat”.  Unfortunately, the reality is quite different and the standard commercial specifications to which these products are produced more

Wet Scrubber Ductwork using Rolled Alloys 253 MA

Recently, Envitech was tasked by a leading waste oil refiner in Southern California to supply and install a wet scrubber on a process gas afterburner.  The goal of the project was to reduce the more

How does a brand name provide a benefit?

ZERON 100 Super Duplex Compared to Generic S32760 Super Duplex. ZERON® 100, developed as a wrought super duplex in the 1980s, was given the code UNS S32760 in 1989.  Since that time several more

NORSOK M 650 Requirements

Why are customers asking for products manufactured by Norsok M650 qualified mills? Oil and Gas Customers increasingly ask for products manufactured by NORSOK M 650 qualified mills. NORSOK M 650 is a more

What is alloy sensitization?

What alloys are prone to sensitization and how to avoid it? Sensitization refers to the precipitation of carbides at grain boundaries in a stainless steel or alloy, causing the alloy to be more

Looking for an EN10204, 3.2 Certification?

EN10204 is a Euronorm (issued by the European Community) specification that describes different types of material test reports and certifications.  The standard contains no requirements relative more

Does choosing the best material for the job have you stymied?

It isn’t an exact science and it is often necessary to be guided by past experience and to make informed judgments based on sometimes incomplete information or data. Consider using the more

How to weld Duplex Stainless Steel

I often receive questions on the correct parameters for welding duplex stainless steels. There seems to be a lot of confusion on which practices and quality checks are best. I also notice that each more


Why controlling the procedure is just as important as controlling the end product? The Engineering Equipment and Materials Users Association (EEMUA) out of England has been increasingly concerned more

How to Measure Tensile Strength, Elastic Modulus, and Ductility

Tensile Strength Tensile strength, or ultimate tensile strength, measures a metal’s resistance to breaking or pulling apart in two pieces.  To find out how strong a wire is, one could just more

Visit Rolled Alloys at the Global Petroleum Show; June 12-14, 2012

Rolled Alloys is exhibiting at the Global Petroleum Show Expo and Conference in Calgary, Alberta.  We will have representatives from our sales, marketing, procurement, and technical groups more

Galvanic Corrosion

Here is a good paper written by Roger Francis on “Galvanic Corrosion of High Alloy Stainless Steels in Sea Water” The coupling of dissimilar metals in conducting, corrosive solutions such more

ZERON 100 at OTC in Houston

As nickel alloys climb in price, duplex and superduplex stainless steels are in high demand for many oil and gas applications.  Rolled Alloys has supplied all product forms of ZERON 100 for more

Rolled Alloys Services the Oil & Gas Industry

With a broad selection of corrosion resistant and heat resistant alloys, the oil and gas market is a good fit for Rolled Alloys.  What you may not know is that Rolled Alloys also offers more

Selecting Filler Metals for Dissimilar Alloy Welding

Have you ever wondered what is the best filler metal for welding two different alloys together? A common question I receive is the proper alloy filler metal for joining two dissimilar metals. more

What is a Duplex Stainless Steel?

Did you know that duplex stainless steels such as LDX2101 lean duplex (UNS S32101), 2205 (S32205) and ZERON® 100 super duplex (S32760) are made up of two phases? Unlike 300 series stainless more

ZERON 100 (S32760) is a Cost Saving Option for Seawater

ZERON 100 (S32760) is a superduplex stainless steel with 50% austenite and 50% ferrite. This gives the alloy the benefits of the austenitic microstructure, such as ductility, and also those of the more