Tag

Metallurgy
CRA 2550E 140 Grade for Severe Sour Service

CRA 2550E Grade 140

There are several methods by which seamless pipe may be produced. The two major categories, hot working and cold working, are differentiated by whether they are performed above or below the material’s recrystallization temperature. Deformation below the recrystallization temperature results in cold hardening and the resulting increase in strength is retained.
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Support for Engineering Companies on Acid Gas Injection Projects

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Historically, acid gas injection well completions have typically consisted of low alloy steels internally plastic coated or fiberglass lined. However, costly workovers and environmental have caused operators and engineering companies to reevaluate these well completions. CRA often supports engineering companies in these evaluations, helping determine the ideal metallurgy based on the operator's goals and expectations. […]
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Support for Engineering Companies on Acid Gas Injection Projects
Cold Working Vs. Hot Working

Cold Working vs. Hot Working

There are several methods by which seamless pipe may be produced. The two major categories, hot working and cold working, are differentiated by whether they are performed above or below the material’s recrystallization temperature. Deformation below the recrystallization temperature results in cold hardening and the resulting increase in strength is retained.
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Microstructural Evaluation of Cold Hardened Nickel Alloy Tubulars

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The microstructure of cold hardened nickel alloys plays an important role in toughness, corrosion resistance, and environmental cracking resistance. The microstructure plays a much lesser role in strength and ductility, which are more directly related to the cold work imparted. The manufacturing of cold hardened tubulars begins with an as-cast ingot of the required chemical […]
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Microstructure
What are CRAs?

What Are Corrosion Resistant Alloys?

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Corrosion resistant alloys are metals engineered to resist degradation by oxidation or other chemical reactions. The most common cra’s, used for mild to moderate corrosion resistance, are stainless steels. Stainless steels are iron-based alloys containing a minimum of 10.5% chromium, which is sufficient to prevent rust under typical room temperature atmospheric conditions. Stainless steels simply […]
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