Products tagged with 'sulfide-stress cracking'

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An Exploratory Investigation of the Cracking Susceptibility of Three Corrosion Resistant Alloys under Thermal Cycles and Conditions Exceeding the Traditional NACE MR0175/ISO 15156 Recommendations

Product Number: 51324-20455-SG

Author: Manuel Marya

Publication Date: 2024

$40.00

The environmentally-assisted cracking (EAC) of three wrought corrosion-resistant alloys (CRAs) with a minimum yield strength of 110ksi (760MPa) was investigated between 70°F (21°C) and 450°F (232°C) through weekly thermal cycles totalizing 42 days. The thermal cycling was introduced to approximate service equipment conditions and gain additional confidence on the EAC-free limits of all three CRAs. Alloys 17-4PH, K-500, and 925 were selected and exposed to a 180,000-ppm NaCl brine (pH=2.75) in equilibrium with 1000 psi (68.95 bar) H2S, 1000 psi (68.95 bar) CO2, and 2500 psi (172.37 bar) CH4. All three CRAs were (a) acquired as per the NACE MR0175/ISO 1516 requirements (1), (b) tested as per NACE TM0177 Method C at 30-to-90% of the CRA minimum specified minimum yield strength (SMYS), and (c) also compared for their weight-loss corrosion and localized corrosion. The results show: (a) Alloy 17-4PH remains resistant to EAC below 45% of its SMYS, (b) Alloy K-500 resists cracking at an estimated 80% of its SMYS, but uniformly corrodes by sulfide conversion under film at a rate of 64 mpy (1.63 mm/yr.), and (c) Alloy 925 continues to be immune to EAC at 90% of its SMYS. Alloy 17-4PH also corroded at a rate of 22.8 mpy (0.58 mm/yr.) in comparison to only 0.6 mpy (15.2 mm/yr.) for Alloy 925, with no CRA showing experiencing crevice corrosion.

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On the Additive Manufacturing of Alloy 718 for Meeting the Standard Industry Hydrogen Sulfide Requirements

Product Number: 51323-18809-SG

Author: Bing Han, Manuel Marya, Srinand Karuppoor

Publication Date: 2023

$20.00

Over the past twenty years, additive manufacturing (AM) has gradually emerged as an important commercial manufacturing technology for the production of components, particularly complex and highvalue metallic components. AM enables the layer-by-layer rapid manufacturing of near-net shapes using 3D computer-aided design data and typically minimizes raw-material wastes.

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Revisiting Alloy K-500 with Improved Performance Limits for Short and Long-Term Subterranean Applications

Product Number: 51323-18787-SG

Author: Manuel Marya

Publication Date: 2023

$20.00

Alloy K-500 (UNS N05500) is concomitantly a centurial material and the very first precipitation-strengthened nickel-based alloy, then developed in the 1920s by the newly-formed International Nickel Company, or Inco.
Derived from Monel 400 (UNS N04400) that was invented in 1901, Alloy K-500 shares many of the same corrosion and tribological characteristics. Being a pioneer alloy with so-called “stain-less” characteristics, Alloy
K-500 also established itself as the first high-strength oilfield nickel alloy, having survived sour service conditions exceeding the capabilities of the low-alloy steels of the time. From early naval propeller shaft applications to
general cross-industrial uses, Alloy K-500 has always been considered a corrosion-resistant alloy, or CRA. For instance, it has been included in the NACE MR1075 document right from the first 1975 edition.

Products tagged with 'sulfide-stress cracking'

An Exploratory Investigation of the Cracking Susceptibility of Three Corrosion Resistant Alloys under Thermal Cycles and Conditions Exceeding the Traditional NACE MR0175/ISO 15156 Recommendations

On the Additive Manufacturing of Alloy 718 for Meeting the Standard Industry Hydrogen Sulfide Requirements

Revisiting Alloy K-500 with Improved Performance Limits for Short and Long-Term Subterranean Applications

Association for Materials Protection and Performance