Stainless steel testing

Temperature, electrode potential and solution pH are also important. For a Type 403 stainless steel tested in 0.01 M Na2S04, Bavarian etal. have shown that at a potential chosen to lie within the potential range for cracking at 100°C, cracking was also obtained at 75°C but not at 25°C or 50° C . 

Times to failure for various stainless steels tested in MgClj have been shown to increase with increasing proportions of martensite present Perhaps the role of martensite under anodic dissolution conditions is comparable to that of ferrite in duplex stainless steels where the enhanced dissolution of one phase prevents crack initiation in the other. There is, of course, another aspect of martensitic transformation that should be mentioned, i.e. the transformation of austenite to martensite either in the bulk material or at a growing crack tip that can give increased susceptibility to... 

Fig. 8.34 Intergranular cracking of sensitised type 316 stainless steel tested in air-saturated water at 7S°C containing 5 ppm chloride...

A 50-mL sample of distillate fuel is placed into a stainless-steel test bomb and sealed. The bomb is pressurized with oxygen at 100 psi and then placed into a heating block maintained at a temperature between 208.4°F to 215.6°F (98°C to 102°C). The test bomb is held at this temperature for 16 hours. 

De Bortoli, M., Knoppel, H., Colombo, A. and Kephalopoulos, S. (1996) Attempting to characterize the sink effect in a small stainless steel test chamber, in Characterizing Sources of Indoor Air Pollution and Related Sink Effects (ed. B.A. Tichenor), American Society for Testing and Materials, Philadelphia, PA USA, pp. 305-18. 

Finally porous tubes of fused alumina were installed, 72 per tank, 3-inch diameter, 36-inch length, %-inch thickness, wdth air permeability of 25 cu. feet per minute per sq. foot, at 2-inch head. All pipes, bolts, etc., were of stainless steel. Tests following installation of these tubes indicated that 90 to 95% of the ozone was being used in the reactions. 

Most of the testing we did early on was pretty simple. There are three basic properties of all pressure-sensitive adhesives peel, tack and shear. Most of the testing we did was pretty limited to peel adhesion tests, tack tests and shear tests. We weren t doing a lot of application-related testing. Testing was done in lab conditions on stainless steel test panels, and customers were trying to translate that information into whether the adhesive would actually perform on their specific substrate. 

Fig. 2. Stainless steel test ring with embedded copper conductors installed on a double-split-cone set.

Up until recently, -800 mV Ag/AgCl has been used as protection potential both for carbon steel and stainless steel. Testing has shown that a more positive potential can be used. See Figure 19.15 where the anodic curve for dissolution of carbon steel and stainless steel is drawn. As can be seen, the maximum potential (E J is higher on stainless steel (SS) than on carbon steel (CS). 

Figure 17.6 Dependence of the incubation period, and of the crack-growth period on the stress amplitude for two materials C - the curve of the fatigue fracture S-N curve) for 316L stainless steel, test data [86] B - cal-...

After preconditioning, a sample of 525 to 550 g is poured into a preheated stainless steel testing cylinder and the cylinder is placed in the drive mechanism of the ageing system (see Figure 4.13). The cylinder containing the sample is left for 60 5 min without rotation or inflow of oxygen, to enable the binder to reach the test temperature of 90°C. 

TEST SECTION. The test section used was a 0.375 in. OD, 0.031 in. wall Inconel tube. The heated portion was approximately 12 in, long and 5 in. of un-heafed test section preceded the heated portion. A larger-diameter (0.625 in. OD) stainless steel test section was used in some preliminary runs. 

The 303 material has the highest tensile strength of any of the 300 series stainless steels tested (266,500 psi) and showed an increase in this property of approximately 165 fronj room temperature to -452 F. The ductility of the 300 series steels generally decreased with decreasing temperature. An exception is the 302 material, which decreases in percent elongation from 755 at room temperature to 45 at -319 F and then increases to 55 at -452 F. 

Marine corrosion of stainless steels testing, selection, experience, protection and monitoring... 

Measurement of the peel from stainless steel testing at 180°... 

A 65% solution of boiling nitric acid test revealed that ILLIUM PD is up to 10 times more resistant to attack than 316 stainless steel Test results... 

Answer by author All our heat flux data are presented as the ratio of the experimental value to the calculated value. The calculated value of the heat flux is determined at zero time, i.e, before frost has formed on the tank surface. A value of 0.60 was used for the emissivity of the stainless steel test tank in this calculation. The value of the frost surface emissivity was not determined nor was it used in any way in the presentation of the data. Based on a search of the literature, however, we feel that the frost surface emissivity is approximately 0,80. 

In a typical laboratory experiment, the polymer membrane, contained in a stainless steel test flange assembly, is subjected to a feed pressure of approximately 3 atm on the upstream side, with static vacuum ( 1 x 10 torr) maintained downstream. A schematic representation of the permeation apparatus is presented in Fig. 33.5. The permeating gas is measured downstream by a... 

As in any strongly conductive medium, aluminium is prone to galvanic corrosion in contact with other metals (see Chapter B.3) such as stainless steel. Tests have shown that in boiling nitric acid, the dissolution rate of aluminium is multiplied by five while that of stainless steel is divided by two. 

Every specimen of 5356-0 and 5083-0 which was oriented in the transverse or longitudinal direction fractured with "laminations." And, as a matter of fact, so does stainless steel. Even the fracture surface of tear test specimens of 5052, 5083, 5356, 5456, and stainless steel tested at low temperatures show this... 

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