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Introduction
Japan Iron and Steel Standard (JIS G 2318-1986) was established to define the characteristics and quality requirements of ferroboron grades used in Japan. It defines the grades of ferroboron and also lays out the principle test methods for analysis. The standard can be applied to all iron and boron products as well as ferroboron alloys.
History
The JIS, an abbreviation for Japanese Industrial Standards, was established during World War I to set quality standards for Japanese military products. JIS standards have since been adopted by industrial and commercial entities in Japan, and are used to set the quality standards for various products and materials. The JIS was designed to guide manufacturers in establishing quality control measures so that their products meet the requirements of the Japanese market.
Definition
Ferroboron is an alloy of iron and boron that is used as an additive to steel. It is commonly referred to as ferro-boron, ferro-borate or ferro-bronze. The ferroboron grade is based on the amount of boron and iron present in the alloy. These grades are given a designation of FxBy, where the x and y represent the chemical composition of the alloy.
Chemical Composition
The chemical composition for ferroboron grades is based on the boron and iron content. All ferroboron products must have a minimum of 82 percent iron and 18 percent boron. The amount of boron and iron in each grade is only slightly different, and typically varies by about 1 percent.
Test Methods
The JIS G 2318-1986 standard outlines the requirements for testing ferroboron in order to ensure that it meets the quality requirements. The standard requires that ferroboron samples be tested for physical properties such as density, tensile strength, and hardness. It also outlines the methods that should be used to test for boron content, iron content, and carbon content.
Application
Ferroboron is used as an additive to steel. The amount of ferroboron that is used depends on the purpose of the steel. For example, higher amounts of ferroboron are used when the steel is used for welding electrodes. Ferroboron is also used to create heat-resistant steels and alloy steels.
Conclusion
The JIS G 2318-1986 standard defines the characteristics necessary for ferroboron grades used in Japan. The standard states the minimum requirements for the chemical composition of the alloys, as well as the test methods that must be used to ensure the quality of ferroboron products. This standard helps to ensure that ferroboron products used in Japan are of a high quality and able to meet the demands of the Japanese market.
