ASTM-A957 2012(Redline)

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A957/A957M-12a Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use (Redline)

Published By	Publication Date	Number of Pages
ASTM	2012	10

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Category: ASTM

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Description

Abstract

This specification covers a group of requirements that are mandatory for castings produced by the investment casting process to meet the metallurgical requirements of the following steel casting specifications. Chemical, heat, and product analyses shall be performed wherein the material shall meet the specified composition limits for carbon, manganese, silicon, phosphorus, sulfur, nickel, chromium, molybdenum, vanadium, tungsten, copper, and aluminum. The specified design and dimensions of the ICI test bar shall be employed only for austenitic alloy castings. The material shall conform to mechanical properties including tension test requirements.

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.

1. Scope

1.1 This specification covers a group of requirements that are mandatory for castings produced by the investment casting process to meet the metallurgical requirements of the following steel casting specifications issued by ASTM.

1.2 This specification also covers a group of supplementary requirements that may be applied to the above specifications as indicated therein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.

1.3 When investment castings are ordered, the requirements stated in this specification form an integral part of the material specification. In cases of conflict, the requirements of this specification shall take precedence over the individual material specification requirements.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A27/A27M Specification for Steel Castings, Carbon, for General Application A128/A128M Specification for Steel Castings, Austenitic Manganese A148/A148M Specification for Steel Castings, High Strength, for Structural Purposes A297/A297M Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application A370 Test Methods and Definitions for Mechanical Testing of Steel Products A380 Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems A447/A447M Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel A494/A494M Specification for Castings, Nickel and Nickel Alloy A560/A560M Specification for Castings, Chromium-Nickel Alloy A609/A609M Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof A732/A732M Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service A747/A747M Specification for Steel Castings, Stainless, Precipitation Hardening A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products A800/A800M Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof A890/A890M Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application A903/A903M Specification for Steel Castings, Surface Acceptance Standards, Magnetic Particle and Liquid Penetrant Inspection A915/A915M Specification for Steel Castings, Carbon, and Alloy, Chemical Requirements Similar to Standard Wrought Grades A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys A958 Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades A967 Specification for Chemical Passivation Treatments for Stainless Steel Parts A991/A991M Test Method for Conducting Temperature Uniformity Surveys of Furnaces Used to Heat Treat Steel Products A997 Practice for Investment Castings, Surface Acceptance Standards, Visual Examination A1002 Specification for Castings, Nickel-Aluminum Ordered Alloy A1058 Test Methods for Mechanical Testing of Steel Products–Metric A1067 Specification for Test Coupons for Steel Castings E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications E94 Guide for Radiographic Examination E125 Reference Photographs for Magnetic Particle Indications on Ferrous Castings E165 Practice for Liquid Penetrant Examination for General Industry E186 Reference Radiographs for Heavy-Walled (2 to 412-in. (50.8 to 114-mm)) Steel Castings E192 Reference Radiographs of Investment Steel Castings for Aerospace Applications E280 Reference Radiographs for Heavy-Walled (412 to 12-in. (114 to 305-mm)) Steel Castings E340 Test Method for Macroetching Metals and Alloys E353 Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys

Additional information

A148/A148M	Steel Castings, High-Strength, for Structural Purposes
A915/A915M	Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades
A890/A890M	Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
A747/A747M	Steel Castings, Stainless, Precipitation Hardening
A732/A732M	Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
A494/A494M	Castings, Nickel and Nickel Alloy
A128/A128M	Steel Castings, Austenitic Manganese
A1002	Castings, Nickel-Aluminum Ordered Alloy
A743/A743M	Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion-Resistant, for General Application
A958	Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades
A560/A560M	Castings, Chromium-Nickel Alloy
ASTM Designation	Title of Specification
A27/A27M	Steel Castings, Carbon, for General Application
A744/A744M	Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A297/A297M	Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat-Resistant, for General Application
A447/A447M	Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

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ASTM-A957 2012(Redline)

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