SteeLog® - A Metallurgical Dictionary

SteeLog is a metallurgical dictionary on more than 5,000 terms used in the metals and metalworking industries. You may search for a particular term or click on a letter of the alphabet to view all the terms in a specific section. This content is protected by copyright but is available for your own personal use.

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Yarways - A measuring instrument used to monitor the water level of drums.

Yellow Brass - 65% copper and 35% zinc. Also known as High Brass. A copper-zinc alloy, named for its yellow hue. Formerly a very popular alloy, but now largely replaced by Cartridge Brass.

Yellowing - A coating defect consisting of a physical change of a coating in which the color of the cured coating gets yellower as it ages, or after rebaking.

Yield - "The ratio of the quantity of finished shipments to the total raw steel produced, adjusted for changes in inventory and any slabs that are purchased from outside. Yield has significantly improved during the past decade, primarily as the result of the industry's conversion to continually cast steel, whose yield is superior to that of traditional ingot teeming. Tons of finished steel products, divided by total tons of charged steel, as a percentage"

Yield of a coil - For non-standard grades of steel, price is affected by the weight ordered. Yield of coil is the expected ship weight of a single coil of a particular type of steel and is used in the calculation of price.

Yield Point - The first stress in a material less than the maximum obtainable stess at which an increase in strain occurs without an increase in stress. Also known as upper yield stress.

Yield Point Elongation - Corresponds to a region of non-homogeneous deformation when a sample is subjected to tensile testing.

Yield Ratio - The ratio of yield strength to ultimate tensile strength.

Yield Strength - The stress at which a material exhibits a specified limiting deviation from the proportionality of stress to strain. The deviation is expressed in terms of strain. Also known as proof stress.

Young's Modulus - The coefficient of elasticity of stretching. For a stretched wire, Young's Modulus is the ratio of the stretching force per unit cross-sectional area to the elongation per unit length. The values of Young's Modulus for metals are of the order 10(12) dynes per square cm. See Modulus of Elasticity

Yield Point - The first stress in a material, usually less than the maximum attainable stress, at which an increase in strain occurs without an increase in stress. Only certain metals exhibit a yield point. If there is a decrease in stress after yielding, a distinction may be made between upper and lower yield points.

Yield Point - The load per unit of original cross section at which, in soft steel, a marked increase in deformation occurs without increase in load.

Yield Strength - The stress at which a material exhibits a specified deviation from propertionality of stress and strain. An offset of 0.2% is used for many metals.

Young's Modulus - The coefficient of elasticity of stretching. For a stretched wire, Young's Modulus is the ratio of the stretching force per unit cross-sectional area to the elongation per unit length. The values of Young's Modulus for metals are of the order 10(12) dynes per square cm.

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