Standard Astm g76 13
Standard Astm g76 13
Standard Astm g76 13
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This test method is under the jurisdiction of ASTM Committee G02 on Wear 5. Significance and Use
and Erosion and is the direct responsibility of Subcommittee G02.10 on Erosion by
5.1 The significance of this test method in any overall
Solids and Liquids.
Current edition approved July 1, 2013. Published July 2013. Originally approved measurements program to assess the erosion behavior of
in 1983. Last previous edition approved in 2007 as G76–07. DOI: 10.1520/G0076- materials will depend on many factors concerning the condi-
13. tions of service applications. The users of this test method
2
The boldface numbers in parentheses refer to a list of references at the end of
this standard.
should determine the degree of correlation of the results
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4
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G76 − 13
TABLE 1 Characteristics of Type 1020 Steel Reference Material
Annealed 900 s at 760°C, air cooled.
Hardness: HRB = 70 ± 2.
Chemical Composition:
C = 0.20 ± 0.01 wt %
Mn = 0.45 ± 0.10
S = 0.03 ± 0.01
Si = 0.1± 0.05
P = 0.01 ± 0.01
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clearly specify all test conditions and materials. It should be
noted that other conditions, for example, larger particle
velocities, may adversely affect measurement precision.
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TABLE 2 Interlaboratory Test Results (Provisional)
Laboratory Number of Average Standard Deviation Deviation from Average
Test Conditions
Number Replicates (.001 mm3/g) (.001 mm3/g) (.001 mm3/g)
Condition A: 1 9 2.240 0.420 −0.494
1020 steel, 2 9 3.130 0.130 0.396
50 µm Al2O3, 3 10 2.130 0.068 −0.604
30 m/s, 90° 4 10 3.720 0.680 0.986
0.033 g/s 5 10 2.450 0.660 −0.284
5 9.600 2.734 0.468 0.807
Number Average Average Within-Laboratory Between-Laboratory
Standard Deviation Standard Deviation
(Provisional)
Coefficient of Variation (%) = 17.1 29.5
95 % Limits = 1.31 2.26
Within-Laboratory Between-Laboratory
Condition B: 1 8 31.500 1.100 3.340
1020 steel, 2 8 23.200 0.040 −4.960
50 µm Al2O3, 3 8 22.900 0.900 −5.260
70 m/s, 90° 4 4 32.400 0.650 4.240
0.033 g/s 5 8 30.800 1.500 2.640
5 7.200 28.160 0.969 4.786
Number Average Average Within-Laboratory Between-Laboratory
Standard Deviation Standard Deviation
(Provisional)
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APPENDIX
(Nonmandatory Information)
X1.1 This erosion test is usually applied to bulk materials. It used for this test do not alter the characteristics of the coating
may also be applied to coatings upon bulk substrates, if care is being tested. The procedures that are used shall be adequately
taken not to penetrate the coating during the test. The test described in the test report.
results from coated test specimens should apply to the material
comprising the coating, and thus to the coated system, as long X1.3 Normally, this test is conducted on numerous separate
as the coating is not altered, fragmented, or dislodged during specimens, each eroded for a given time and condition. While
the test. not recommended, it is possible to conduct repeated erosion
tests (under the same conditions) on the same individual
X1.2 In the case where this test is applied to coatings on
specimen by carefully repositioning the specimen after eroding
bulk substrates, some of the test steps may need to be modified.
it, removing it for cleaning, and weighing it. In such a case, the
For example, surface preparation of the coating, like mechani-
specimen must occupy the identical position for each test in the
cal polishing, before testing may not be appropriate. Cleaning
of the surface may be constrained by the nature of the coating. series; otherwise the accumulated erosion effect will not be
In such cases, the user shall ensure that the preparation steps correct.
REFERENCES
(1) Young, J. P., and Ruff, A. W., Journal of Engineering Materials and (8) Ninham, A. J., and Hutchins, I. M., Proceedings of the 6th Interna-
Technology, Transactions of ASME, Vol 99, 1977, pp. 121–125. tional Conference on Erosion by Liquid and Solid Impact (Univ. of
(2) Hansen, J. S., in Erosion: Prevention and Useful Applications, Adler, Cambridge, 1983) pp. 50-51.
W. F., ed., ASTM STP 664, 1979, pp. 148–162. (9) Barkalow, R. H., Goebel, J. A., and Pettit, F. S., in Erosion:
(3) Finnie, I., Levy, A., and McFadden, D. H., in Erosion: Prevention and Prevention and Useful Applications, Adler, W. F., ed., ASTM STP 664,
Useful Applications, Adler, W. F., ed., ASTM STP 664, 1979, pp. 1979, pp. 163–192.
36–58. (10) Allen, T., Particle Size Measurement, Chapman and Hall, London,
(4) Wood, F. W., Journal of Testing and Evaluation, 14, 1986. 1974.
(5) Preece, C. M., ed., Erosion: Treatise on Materials Science and (11) Ponnaganti, V., Stock, D. E., and Sheldon, G. L., Proceedings on
Technology, Vol 16 Academic Press, New York, NY, 1979.
Symposium Polyphase Flow and Transport Tech. (ASME) NY, 1980
(6) Ruff, A. W. and Ives, L. K., Wear, Vol 35, 1975, pp. 195-199.
pp 195-199.
(7) Finnie, I., Wolak, J., and Kabil, Y., Journal of Materials, Vol 2, 1967,
pp. 682–700.
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