Search results for keyword: micro
Gray iron castings (abstract) GB 9439-88
Abstract
GB 9439-88 is a national standard for gray cast iron parts. Gray cast iron is a type of cast iron which has an even surface and a dense microstructure with excellent mechanical properties and wear resistance. This standard specifies the requirements, test methods, acceptance criteria, ma......
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Heat-resistant steel castings (abstract) GB 8492-87
Heat-resistant steels are widely used for casting of components for many industries such as the oil and gas, petrochemical and power generation. The properties of these steels provide them with good thermal and oxidation resistance to high temperature environments, coupled with good strength and h......
GB 12827-91 standard reference acetylene carbon black and identification method
Carbon black refers to black powdery or granular material, which is composed of many tiny particles with the average particle size of between 10 and 2000 nanometers. It is composedot many carbon atoms buthydrophobic in nature. Carbon black can be prepared by pyrolysis of hydrocarbons such as coal ......
Low alloy steel welding rod GB 5118-85
Introduction
Low alloy welding electrodes are used when welding low alloy steels and are mainly used as filler metal electrodes in gas metal arc (GMAW) and gas tungsten arc (GTAW) welding processes. Low alloy welding electrodes are made of metals and alloys such as nickel and aluminum, which allo......
Composite steel plate ultrasonic flaw detection method GB 7734-87
Ultrasonic testing is a form of non-destructive testing that utilizes the principle of ultrasound, which is the vibration of sound waves greater than the human ear can detect, to detect flaws in a material. It’s one of the most common testing methods used to inspect steel plates, and can be appli......
Carburized bearing steel (GB 3203-82)
Carbon bearing steel (GB 3203-82)
Carbon bearing steel, also known as bearing steel, is a type of steel alloy used in the production of bearing components that meets the China national standard GB 3203-82. It is characterized by excellent fatigue resistance, residual compressive notches, wear res......
Flux for submerged arc welding of carbon steel GB 5293-85
GB 5293-85 Carbon Steel Arc Welding Electrodes
The Chinese standard GB 5293-85 Carbon Steel Arc Welding Electrodes is the national standard referenced in China and all others countries using the same standard, which regulates the makeup and use of carbon steel arc welding electrodes.
The main co......
Iron chrome glass sealing alloy 4J28 (YB/T5240-1993)
INTRODUCTION
4J28 is a kind of Fe-Cr-B glass sealing alloy, which is a duplex structure of Cr24-Fe. It is non-magnetic, has excellent corrosion resistance and is applicable to 300℃, which has excellent corrosion resistance and heat conduction performance. It is suitable for the manufacture of vac......
Aluminum and aluminum alloy welding rod GB 3669-83
GB 3669-83 Alloy aluminum welding rods
Introduction
GB 3669-83 is an international standard of alloy aluminum welding rods. This standard is issued in 1983 and identifies the requirements for alloy aluminum welding rods for fusion welding. It plays an important role in all kinds of activities re......
Mechanical Properties of Japanese Standard Spheroidal Graphite Type Austenitic Cast Iron
Mechanical Properties of Pearlitic Cast Iron According to Japan Standard
Introduction
Cast iron is a widely used material in industry due to its high strength and low cost. It is known as a brittle material, and while it has high strength, it is also very fragile and can fracture easily. However......
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