ASTM G36 PDF

Want this as a site license? Scope 1. Although this test may be performed using various concentrations of magnesium chloride, this procedure covers a test solution held at a constant boiling temperature of The boiling points of aqueous magnesium chloride solutions at one atmosphere pressure as a function of concentration are shown graphically in Fig. It is a method for detecting the effects of composition, heat treatment, surface finish, microstructure, and stress on the susceptibility of these materials to chloride stress corrosion cracking. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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More G The bent-beam specimens are designed for testing at stress levels below the elastic limit of the alloy. For testing in the plastic range, U-bend specimens should be employed see Practice G Although it is possible to stress bent-beam specimens into the plastic range, the stress level cannot be calculated for plastically-stressed three- and four-point loaded specimens as well as the double-beam specimens. Therefore, the use of bent-beam specimens in the plastic range is not recommended for general use.

Scope 1. This practice is applicable to specimens of any metal that are stressed to levels less than the elastic limit of the material, and therefore, the applied stress can be accurately calculated or measured see Note 1. Stress calculations by this practice are not applicable to plastically stressed specimens. Since stress-corrosion cracking is a function of the total stress, for critical applications and proper interpretation of results, the residual stress before applying external stress or the total elastic stress after applying external stress should be determined by appropriate nondestructive methods, such as X-ray diffraction 1.

For plate material the bent-beam specimen is more difficult to use because more rugged specimen holders must be built to accommodate the specimens. A double-beam modification of a four-point loaded specimen to utilize heavier materials is described in Once cracking has initiated, the state of stress at the tip of the crack as well as in uncracked areas has changed, and therefore, the known or calculated stress or strain values discussed in this practice apply only to the state of stress existing before initiation of cracks.

The inch-pound values in parentheses are provided for information. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For more specific safety hazard information see Section 7 and

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More G The bent-beam specimens are designed for testing at stress levels below the elastic limit of the alloy. For testing in the plastic range, U-bend specimens should be employed see Practice G Although it is possible to stress bent-beam specimens into the plastic range, the stress level cannot be calculated for plastically-stressed three- and four-point loaded specimens as well as the double-beam specimens. Therefore, the use of bent-beam specimens in the plastic range is not recommended for general use. Scope 1. This practice is applicable to specimens of any metal that are stressed to levels less than the elastic limit of the material, and therefore, the applied stress can be accurately calculated or measured see Note 1.

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A suggested test apparatus capable of maintaining solution concentration and temperature within the prescribed limits for extended periods of time is also described herein. Both test specimens were taken off test at 8 hours for examination at low magnification. ASTM G36 — 94 No preparation other than deburring and degreasing was performed on the test specimens prior to testing. Although this test may be performed using various concentrations of magnesium chloride, this procedure covers a test solution held at a constant boiling temperature of Link to Active This link will always route to the current Active version of the standard. Corrosion Testing Laboratories, Inc. It is a method for detecting the effects of composition, heat astn, surface finish, qstm, and stress on the susceptibility of these materials to chloride axtm corrosion cracking.

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Accompanying paperwork states that both types of tube were fabricated from the same heat lot of material. No preparation other than deburring and degreasing was performed on the test specimens prior to testing. The test specimens were immersed in the boiling solution and supported using the suggested ladder-back cradles. Regular examination periods for test specimen cracking were scheduled. RESULTS Circumferential cracking of the bare tube test specimen was apparent within the first 8 hours of testing even while the test specimen was on test. Both test specimens were taken off test at 8 hours for examination at low magnification. Cracking of both test specimens was observed, and the tests were terminated.

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