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Characteristics and Production Process The cast tungsten carbide powder has a WC and W2C eutectic structure which exhibits dark gray appearance. It exhibits outstanding wear- and impact-resistance, as well as high hardness property, at high temperatures. The sizes of tungsten …

Tungsten carbides are used extensively in both weld overlay and thermal spray hardfacing applications such as drilling tools, ripper teeth, ditchdigger teeth, plowshares, valve seats, and mining extraction equipment. They’re extremely important for severe abrasion/ wear resistance and cutting applications. Tungsten …

What’s Weld Overlay or Weld Cladding? Weld overlay, also known as weld cladding, is a typical surfacing process in which a relatively thick layer of weld metal is weld cladded to the base metal surface. Depending on the wear-resistance or corrosion resistance properties …

What Is Hardfacing? Hardfacing, literally speaking, means to harden the surface of the metal. It is a typical surfacing form through which a hard, wear-resistant material is deposited onto the base metal (substrate) by either weld overlay or thermal spray …

The Charpy V-notch impact test is often used to evaluate the brittleness of the 9% nickel steel, which is subjected to extremely rapid strain rate especially at cryogenic temperatures. It shall be conducted in accordance with ASTM E23. The V-notched …

Low carbon 9% nickel steel plates are often used at service temperature cycling from room temperature to cryogenic temperature. It is necessary to study the tensile properties and hardness at different temperatures. The specimens for Fig-1 are 9% nickel steel plates …

KBR Inc, the world’s leading ammonia technology contractor, announced on 29th Nov, 2017 that it has been awarded an ammonia plant revamp contract by Rashtriya Chemicals & Fertilizers Ltd (RCF). RCF is a state-own fertilizer company in India. The ammonia plant …

The maximum allowable design stress limits for 9% nickel steel plates generally depend on specific design Codes: ASME BPVC Section VIII, Division 1: according to Table UHT-23, the maximum allowable design stress for 9% nickel steel(base metal) in both NNT & QT …

Although the 9% nickel alloy steel is not utilized normally for elevated temperature service, specific requirements allow pressure vessels to be cycled from moderately elevated temperatures to subzero temperature. A few experimental short time elevated-temperature tensile data for both NNT & …

The 9% nickel alloy steel plates are generally manufactured in accordance with either ASTM A353 or ASTM A553 Type I. The following procedures for heat treatment are recommended in the standard mentioned above: 1. Double Normalize and Temper (NNT) – …

The 9% nickel steel plates are widely used for the construction of cryogenic LNG pressure vessels. Usually, they shall be manufactured in accordance with ASME SA-353/ ASTM A353 in double normalized and tempered (NNT) condition, or ASME SA553/ ASTM A553 …

The clad plate, also known as clad steel plate, is a typical laminar metal composite made by bonding the special metal plate to a carbon steel or low alloy steel plate. Generally, the special metal plate is called cladding metal, which …