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ASME SA213 T91: どれくらい知っていますか?

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Background & Introduction ASME SA213 T91, the steel number in the ASME SA213/SA213M standard, belongs to the improved 9Cr-1Mo steel, which was developed from the 1970s to the 1980s by the U.S. Rubber Ridge National Laboratory and the Metallurgical Materials Laboratory of the U.S. Combustion Engineering Corporation in cooperation. Developed based on the earlier 9Cr-1Mo steel, used in nuclear power (can also be used in other areas) high-temperature pressurized parts materials, is the third generation of hot-strength steel products; its main feature is to reduce the carbon content, in the limitation of the upper and lower limits of the carbon content, and more stringent control of the content of residual […]

NACE MR0175/ISO 15156 と NACE MR0103/ISO 17495-1 の比較

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Introduction In the oil and gas industry, particularly in onshore and offshore environments, ensuring the longevity and reliability of materials exposed to aggressive conditions is paramount. This is where standards like NACE MR0175/ISO 15156 vs NACE MR0103/ISO 17495-1 come into play. Both standards provide critical guidance for material selection in sour service environments. However, understanding the differences between them is essential for selecting the right materials for your operations. In this blog post, we will explore the key differences between NACE MR0175/ISO 15156 vs NACE MR0103/ISO 17495-1, and offer practical advice for oil and gas professionals navigating these standards. We will also discuss the specific applications, challenges, and solutions these […]

ボイラーおよび熱交換器: シームレスチューブ選択ガイド

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Introduction In industries such as power generation, oil and gas, petrochemicals, and refineries, seamless tubes are essential components, especially in equipment that must withstand extreme temperatures, high pressures, and harsh, corrosive environments.  Boilers, heat exchangers, condensers, superheaters, air preheaters, and economizers use these tubes. Each of these applications demands specific material properties to ensure performance, safety, and longevity. The selection of seamless tubes for the boiler and heat exchanger depends on the specific temperature, pressure, corrosion resistance, and mechanical strength. This guide provides an in-depth look into the various materials used for seamless tubes, including carbon steel, alloy steel, stainless steel, titanium alloys, nickel-based alloys, copper alloys, and zirconium alloys. We […]

材料の選び方: 材料選択ガイドライン

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Introduction Material selection is a critical step in ensuring the reliability, safety, and performance of equipment across industries such as oil and gas, chemical processing, marine engineering, aerospace, and many more. The right material can prevent corrosion, withstand extreme temperatures, and maintain mechanical integrity in harsh environments. Steels and alloys such as carbon steels, alloy steels, stainless steels, nickel, titanium, and various high-performance superalloys like Inconel, Monel, and Hastelloy offer specific advantages that make them ideal for these demanding applications. This blog provides a comprehensive overview of material selection guidelines, focusing on key materials and their suitability based on corrosion resistance, mechanical properties, and temperature capabilities. By understanding these properties, […]

知っておくべきことすべて: スーパー 13Cr

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1. Introduction and Overview Super 13Cr is a martensitic stainless steel alloy known for its exceptional mechanical strength and moderate corrosion resistance, making it ideal for demanding environments. Originally developed for oil and gas applications, Super 13Cr offers a cost-effective alternative to higher alloyed materials, especially in moderately corrosive environments where chloride-induced stress corrosion cracking (SCC) is a concern. Due to its enhanced mechanical properties and improved corrosion resistance compared to conventional 13Cr stainless steel, Super 13Cr is widely used in industries like oil and gas, chemical processing, pulp and paper, marine and offshore, air pollution control, and power generation. 2. Available Super 13Cr Products and Specifications Super 13Cr is […]

S355J0H vs S355J2H: 中空構造セクションの知識

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Introduction When working in construction, particularly in infrastructure projects, selecting the right steel grade for structural hollow sections is critical. Two commonly specified grades are S355J0H and S355J2H, both used extensively in structural hollow sections such as Circular Hollow Sections (CHS), Square Hollow Sections (SHS), and Rectangular Hollow Sections (RHS). These grades are defined under EN 10219 (Cold-Formed Welded Structural Hollow Sections of Non-Alloy and Fine Grain Steels) and EN 10210 (Hot-Finished Structural Hollow Sections of Non-Alloy and Fine Grain Steels). This article aims to provide a detailed, expert comparison of S355J0H vs S355J2H, offering guidance on their properties, applications, and suitability for infrastructure construction projects. Understanding S355 Steel Grades […]