ASTM A437 PDF

Charpy impact energy a K,charpy. Elastic modulus E. Elongation A50 A Hardness, Brinell HB. Reduction of area Z. Tensile strength R m.

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Historical Version s - view previous versions of standard. More A This specifications covers alloy-steel bolting material specially heat treated for high-temperature service, such as steam turbine, gas turbine, and similar uses.

Steels of Grades B4B and B4C shall undergo heating, liquid quenching, reheating, tempering, and air or furnace cooling, respectively. Steels of Grade B4D shall undergo heating, oil quenching, reheating or tempering, and air of furnace cooling, respectively. Heat and product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, tungsten, aluminum, titanium, and tin.

The steels shall undergo tensile, impact, and hardness tests, and shall conform to the following mechanical requirements: tensile strength, yield strength, elongation, impact value, Brinell hardness number, and Rockwell hardness number. All bars or forged blanks of starting material shall be subjected to nondestructive inspection using any of the following methods: Eddy current, Magnetic particle inspection wet or dry , Liquid penetrant inspection, Ultrasonic testing, or Visual testing.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. This material requires special processing and should not be used in general-purpose applications.

Bolting furnished as bars shall be hot wrought and may be further processed by centerless grinding or by cold drawing. Although the high-temperature properties are not specified, they are implied by control of the chemistry, heat treatment, and room-temperature properties of the bolting material.

The supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Scope 1. Link to Active This link will always route to the current Active version of the standard.

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ASTM A437 B4B

Active view current version of standard. Other Historical Standards. More A See Specification for the definition of bolting. This material requires special processing and should not be used in general-purpose applications.

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