ASTM E937-93(2011)
(Test Method)Standard Test Method for Corrosion of Steel by Sprayed Fire-Resistive Material (SFRM) Applied to Structural Members
Standard Test Method for Corrosion of Steel by Sprayed Fire-Resistive Material (SFRM) Applied to Structural Members
SIGNIFICANCE AND USE
It is the intent of this test method to determine relative corrosive properties of direct applied SFRM that provides an indication of serviceability. Satisfactory performance of SFRM applied to structural members and assemblies depends upon its ability to withstand the various influences that occur during the life of the structure, as well as upon its satisfactory performance under fire conditions.
This test method evaluates the relative corrosion of steel induced by SFRM and determines whether the presence of SFRM increases, decreases, or has no effect on the corrosion characteristics of steel.
SCOPE
1.1 This test method covers a procedure for measuring the corrosion to steel induced by sprayed fire-resistive material.
1.2 These SFRMs include sprayed fibrous and cementitious materials applied directly in contact with the structural members.
1.3 This test method is applicable only to laboratory procedures.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
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Standards Content (Sample)
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Designation: E937 − 93 (Reapproved2011)
Standard Test Method for
Corrosion of Steel by Sprayed Fire-Resistive Material
(SFRM) Applied to Structural Members
This standard is issued under the fixed designation E937; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2.1 corrosion—chemical reaction between a metal and its
environment that produces a deterioration of the metal and its
1.1 This test method covers a procedure for measuring the
properties.
corrosion to steel induced by sprayed fire-resistive material.
3.2.2 sprayed fire-resistive materials—materials that are
1.2 These SFRMs include sprayed fibrous and cementitious
sprayed onto substrates to provide fire-resistive protection of
materials applied directly in contact with the structural mem-
the substrates.
bers.
1.3 This test method is applicable only to laboratory proce-
4. Summary of Test Method
dures.
4.1 In this test method replicate panels of bare, shop-coated,
1.4 The values stated in SI units are to be regarded as the
and galvanized steel are sprayed with SFRM and subjected to
standard. The values given in parentheses are mathematical
room temperature and humidity conditions and to 240 h of
conversions to inch-pound units that are provided for informa-
conditioning in a temperature- and humidity-controlled cham-
tion only and are not considered standard.
ber. Corrosion induced under these conditions is determined by
weight loss of the sheets as related to sheets not so condi-
1.5 This standard does not purport to address all of the
tioned.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5.1 It is the intent of this test method to determine relative
corrosive properties of direct applied SFRM that provides an
2. Referenced Documents
indication of serviceability. Satisfactory performance of SFRM
applied to structural members and assemblies depends upon its
2.1 ASTM Standards:
ability to withstand the various influences that occur during the
E119 Test Methods for Fire Tests of Building Construction
life of the structure, as well as upon its satisfactory perfor-
and Materials
mance under fire conditions.
E605 Test Methods for Thickness and Density of Sprayed
Fire-Resistive Material (SFRM) Applied to Structural
5.2 This test method evaluates the relative corrosion of steel
Members
induced by SFRM and determines whether the presence of
E631 Terminology of Building Constructions
SFRM increases, decreases, or has no effect on the corrosion
characteristics of steel.
3. Terminology
6. Apparatus
3.1 Definitions—Definitions in this test method are in ac-
cordance with Terminology E631.
6.1 Standard Temperature Humidity Cabinet, equipped to
3.2 Definitions of Terms Specific to This Standard:
maintain the temperature at 35 6 1.7°C (95 6 3°F) and a
relative humidity of 95 6 3 %. The cabinet and all accessories
shall be of a material that does not affect the corrosiveness of
This test method is under the jurisdiction of ASTM Committee E06 on
the atmosphere in the cabinet.Additionally, all parts that come
Performance of Buildings and is the direct responsibility of Subcommittee E06.21
into contact with the test specimens shall be made of material
on Serviceability.
Current edition approved April 1, 2011. Published May 2011. Originally
that will not cause electrolytic corrosion. Adequate circulation
approved in 1983. Last previous edition approved in 2005 as E937 – 93 (2005).
of the atmosphere over the specimens shall be provided.
DOI: 10.1520/E0937-93R11.
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
Standards volume information, refer to the standard’s Document Summary page on Although “mass” is being determined, the term weight is used in this test
the ASTM website. method as an accepted substitute.
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E937 − 93 (2011)
6.2 Scale, having a capacity of 5 kg and a sensitivity of 9.2 Protect the opposite sides and edges of the sheets with a
60.1 g. suitable coating. This coating shall be stable under the condi-
tions of this test method and shall not promote corrosion;
6.3 Wire Brush, described as “cement mold brush” with
ceresin wax is suggested.
brasswirebristles25 mm(1 in.)longmountedinahandle.The
bristle section shall be 127 mm (5 in.) long by 19 mm ( ⁄4 in.) 9.3 Apply the SFRM at a minimum thickness of 19 63mm
3 1
wide. ( ⁄4 6 ⁄8 in.) to all sheets.
9.4 Specimens I and III of Respective Sets:
7. Materials
9.4.1 Condition the specimens for 240 h at room tempera-
7.1 This test method requires the application of SFRM in
ture (20 6 5°C (68 6 9°F)) and relative humidity not greater
accordance with manufacturer’s published instructions. The
than 60 %. Record if a constant weight was reached.
apparatus, materials, and procedures used to apply the SFRM
9.4.2 Remove the SFRM, as well as the protective wax
shall be representative of application in the field.
coating, from the steel sheet identified as I and III, from each
of the respective sets.
7.2 The density of the prepared sample shall be the same as
9.4.3 RemoveallsurfacerustfromIandIIIoftherespective
the density tested and reported during the Test Methods E119
sets with the wire brush described in Section 6 and clean with
fire exposures or as re
...
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