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Norma ASTM A395/A395M-99(2022) 1.10.2022 náhled

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ASTM A395/A395M-99(2022)

Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures

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NORMA vydána dne 1.10.2022

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Provedení	PDF - okamžité stažení - 1 479.30 Kč Tištěné - 1 479.30 Kč
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Informace o normě:

Označení normy: ASTM A395/A395M-99(2022)
Datum vydání normy: 1.10.2022
Kód zboží: NS-1086567
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace textu normy ASTM A395/A395M-99(2022) :

This specification covers standard requirements for ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings are classified by grades based on mechanical property requirements. These iron castings shall meet the specified values of tensile strength, yield strength, elongation and hardness. Chemical analysis shall be performed wherein the casting shall conform to the required chemical composition for carbon, silicon, and phosphorous. The material shall meet the required tensile properties, hardness, and microstructure. The iron casting shall undergo pressure test after machining. The thickness of any repaired section in relation to the size of the plug used shall be indicated. The minimum radius of repaired sections of cylinders or cones in relation to the size of plug used shall not exceed the prescribed limit. Other defective areas may also be repaired by plugging provided the minimum ligament between plugs in adjacent areas shall not be less than twice the distance from the nearest plug. Three Y-blocks shall be utilized as test coupons. The material shall undergo the following test methods: tension test, chemical analysis, yield strength test, and hardness test.

Keywords:
casting, ductile iron, mechanical properties, pressure-retaining, pressure test, tensile strength, tension testing, yield strength,, ICS Number Code 77.140.80 (Iron and steel castings)

Doplňující informace

1. Scope

1.1?This specification covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450 ?F. For temperatures above 450 ?F and up to 650 ?F, only Grade 60-40-18 castings are suitable (Note 1).

1.2?Valves, flanges, pipe fittings, pumps, and other piping components are generally manufactured in advance and supplied from stock by the manufacturer, jobber, or dealer.

1.3?For supplemental casting requirements, Specification A834 may be utilized.

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 nonconformance with the standard.

Note 1:?For service other than as specified in this section, reference should be made to Specification A536 for Ductile Iron Castings.1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

A834-95(2020)	Standard Specification for Common Requirements for Iron Castings for General Industrial Use
E186-20	Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
E10-23	Standard Test Method for Brinell Hardness of Metallic Materials
E8-04	Standard Test Methods for Tension Testing of Metallic Materials
E280-21	Standard Reference Radiographs for Heavy-Walled (412 to 12 in. (114 to 305 mm)) Steel Castings
A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
E446-20	Standard Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness
A732/A732M-20	Standard Specification for Castings, Investment, Carbon and Low-Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
A536-84(2019)e1	Standard Specification for Ductile Iron Castings (Includes all amendments and changes 5/3/2019).
F1548-01(2023)	Standard Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
F1476-07(2019)	Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
E1806-23	Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition
E689-20	Standard Reference Radiographs for Ductile Iron Castings
A247-19	Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings

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