Strauss test

British Standard Method for Determination of Resistance to Intergranular Corrosion of A ustenltic Stainless Steels Copper sulphate-Sulphuric acid Method (Moneypenny Strauss Test) BS 5903 (1980)... 

Test methods for determining electrolytic corrosion with electrical insulating materials Method for determination of resistance to intergranular corrosion of austenitic stainless steels copper sulphate-sulphuric acid method (Moneypenny Strauss test) Specification for electroplated coatings of tin/lead alloys... 

Austenitic stainless steels-determination of resistance to intergranular corrosion. Part 1 Corrosion test in nitric acid medium by measurement of loss of mass (Huey test) Austenitic stainless steels-determination of resistance to intergranular corrosion. Part 2 Corrosion test in a sulphuric acid/copper sulphate medium in the presence of copper turnings (Moneypenny Strauss test)... 

Corradi and Gasperini claimed that the potentiostatic method was more effective and simpler than the Strauss test for determining intergranular corrosion of stainless steels, and suggested that the method may lend itself for use on finished equipment in service as a non-destructive test. 

Fig. 19 Ti me-temperature-sensitization curves for AISI 304 (0.05 wt. %) and 304L (0.03 wt. %) stainless steel obtained using the Strauss test.

Fabrication of RCPB components is consistent with the recommendations of Regulatory Guide 1.44 as described in items A through D, below, except for the criterion used to demonstrate freedom from sensitization. The ASTM A 708 Strauss Test is used in lieu of the ASTM A 262 Practice E, Modified Strauss Test, to demonstrate freedom from sensitization in fabricated, unstabilized, stainless steel. 

Extensive testing on stainless steel mockups, fabricated using production techniques, has been conducted to determine the effect of various welding procedures on the susceptibility of unstabilized 300 series stainless steels to sensitization-induced intergranular corrosion. Only those procedures and/or practices demonstrated not to produce a sensitized structure are used in the fabrication of RCPB components. The ASTM standard A 708 (Strauss Test) is the criterion used to determine susceptibility to intergranular corrosion. This test has shown excellent correlation with a form of localized corrosion peculiar to sensitized stainless steels. As such, ASTM A 708 is utilized as a go/no-go standard for acceptability. 

Weld heat affected zone sensitized austenitic stainless steels (which will fail the Strauss Test, ASTM A 708) are avoided by careful control of ... 

Strauss test H2SO4 +CUSO4 +Cu Immersion in boUing solution Observation of cracks upon bending... 

The accelerated Strauss test, ASTM A 262 Practice E (copper-copper sulfate-16 % sulfuric acid test), is also a popular quality control test because it is brief (typically 24 h) and includes an acceptance criterion. After exposure, specimens are bent to expose intergranular attack. Material with attack fails, while unattacked material passes. Experience is important in specimen evaluation to separate cracks" due to attacked grain boundaries from mechanical cracks that may have occurred in bending. Different laboratories have obtained varying results upon examination of the same set of sjjecimens [/2]. 

Strauss test. It consists of exposing a sample to a boiling solution of 6 wt% CUSO4 - -16 wt% H2SO4 for a period of 72 h. 

Moneypenny-Strauss test Corrosion testing in a copper sulfate solution containing sulfuric acid used to detect the susceptibility of stainless steel to intergranular corrosion. 

Despite the nse of very high arc energies (0.5 to 6kJ/mm, or 13 to 152kJ/inch) in combination with mnlti-pass welding, the Strauss test (ASTM A 262, Practice E) failed to uncover any signs of sensitization after bending through 180°. 

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