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ASTM E2734/E2734M-10(2018)

(Specification)

Standard Specification for Dimensions of Knife-Edge Flanges

Standard Specification for Dimensions of Knife-Edge Flanges

SCOPE
1.1 This standard specifies the dimensions of knife-edge style flanges and their associated gaskets used in vacuum systems for pressures ranging from 105 Pa to 10-11 Pa. Such flanges are widely used throughout vacuum technology applications in semiconductor processing tools, surface analysis systems, space simulation systems, and general research requiring vacuum.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-May-2018
ICS
23.160 - Vacuum technology
Technical Committee
E42 - Surface Analysis
Drafting Committee
E42.13 - Vacuum Technology
Current Stage
Ref Project

Relations

Replaces
ASTM E2734/E2734M-10 - Standard Specification for Dimensions of Knife-Edge Flanges
Effective Date
01-Jun-2018
Refers
ASTM E673-03 - Standard Terminology Relating to Surface Analysis (Withdrawn 2012)
Effective Date
01-Dec-2003
Refers
ASTM E673-02a - Standard Terminology Relating to Surface Analysis
Effective Date
10-Dec-2002
Refers
ASTM E673-01 - Standard Terminology Relating to Surface Analysis
Effective Date
10-Nov-2001
Refers
ASTM E673-98E1 - Standard Terminology Relating to Surface Analysis
Effective Date
10-Nov-2001

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ASTM E2734/E2734M-10(2018) - Standard Specification for Dimensions of Knife-Edge FlangesASTM E2734/E2734M-10(2018) - Standard Specification for Dimensions of Knife-Edge Flanges
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ASTM E2734/E2734M-10(2018) - Standard Specification for Dimensions of Knife-Edge Flanges
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E2734/E2734M −10 (Reapproved 2018)
Standard Specification for
Dimensions of Knife-Edge Flanges
ThisstandardisissuedunderthefixeddesignationE2734/E2734M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 2.2 ISO Standard:
ISO 4288:1996 GeometricalProductSpecifications(GPS)—
1.1 This standard specifies the dimensions of knife-edge
Surface Texture: Profile Method—Rules and Procedures
style flanges and their associated gaskets used in vacuum
for the Assessment of Surface Texture
5 -11
systems for pressures ranging from 10 Pa to 10 Pa. Such
flanges are widely used throughout vacuum technology appli-
3. Terminology
cations in semiconductor processing tools, surface analysis
3.1 Definitions—For definitions used in this specification,
systems, space simulation systems, and general research re-
see Terminology E673.
quiring vacuum.
3.2 Definitions of Terms Specific to This Standard:
1.2 The values stated in either SI units or inch-pound units 3.2.1 knife-edge flange, n—vacuum flanges seal with a
are to be regarded separately as standard. The values stated in metal gasket; two mating surfaces with identical circular
each system may not be exact equivalents; therefore, each (triangular profile) knife-edges are bolted together; a deform-
system shall be used independently of the other. Combining able metal gasket, captured between the knife-edges provides a
values from the two systems may result in non-conformance leak-free seal.
with the standard. 3.2.1.1 Discussion—Vacuum flanges that seal with a metal
gasket were originally developed as Conflat flanges (trade-
1.3 This standard does not purport to address all of the
mark) by the Varian Corporation.
safety concerns, if any, associated with its use. It is the
3.2.2 type, n—knife-edge flanges come in a variety of sizes;
responsibility of the user of this standard to establish appro-
historically, the flange sizes were identified in North America
priate safety, health, and environmental practices and deter-
astheflange’soutsidediameter(ininches)andinEuropeasthe
mine the applicability of regulatory limitations prior to use.
maximum nominal bore of the tube (in millimetres) that might
1.4 This international standard was developed in accor-
be welded to the flange; for this specification, the flange
dance with internationally recognized principles on standard-
identification “type” is used where the type is approximately
ization established in the Decision on Principles for the
equal to the flange’s outside diameter in inches.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Materials and Manufacture
Barriers to Trade (TBT) Committee.
4.1 Flange—Flanges must be manufactured from a suffi-
cientlyhardorhard-coatedmaterialtoresistdeformationofthe
2. Referenced Documents
knife-edge profile despite repeatedly forming a vacuum seal
2.1 ASTM Standard:
with metal gaskets.
E673 Terminology Relating to SurfaceAnalysis (Withdrawn
3 4.2 Gasket—Gasket must be manufactured from a soft,
2012)
annealed, or partially-tempered metal such that the mating
flanges’ knife-edges cause sufficient (initial) plastic deforma-
tion that a vacuum seal is accomplished.
ThisspecificationisunderthejurisdictionofASTMCommitteeE42onSurface
Analysis and is the direct responsibility of Subcommittee E42.13 on Vacuum
5. Dimensions, Mass, and Permissible Variations
Technology.
Current edition approved June 1, 2018. Published June 2018. Originally 5.1 Figs. 1-3 and Tables 1 and 2 contain the required
approved in 2010. Last previous edition approved in 2010 as E2734/E2734M–10.
dimensions and tolerances for rotatable and non-rotatable
DOI: 10.1520/E2734_E2734M-10R18.
knife-edge vacuum flanges.
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
the ASTM website. Available from International Organization for Standardization (ISO), ISO
The last approved version of this historical standard is referenced on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
www.astm.org. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2734/E2734M − 10 (2018)
FIG. 1 Flange Dimensions: (a) Non-Rotatable Flange (b) Rotatable Flange
FIG. 2 Knife-Edge Detail
FIG. 3 Knife-Edge Gasket Dimensions
E2734/E2734M − 10 (2018)
TABLE 1 Knife-Edge Flange Dimension
AB C D E F G H I
Setback
Nominal Seal Knife
Num- Position Flange Depth of
Outside Recess Edge
Max ber Bolt Tolerance Face to Receiver Flange
Nominal Diameter Bolt Bolt Diameter Diameter
Type Tube of Hole of Tube Seat Seat for Thickness
Bore Tolerance Thread Circle Tolerance Tolerance
Diameter Bolt Diameter Bolt Tolerance Insert (Min)
±0.030 in. ±0.004 in. ±0.004 in.
Holes Holes ±0.005 in. (Max)
[±0.75 mm] [±0.10 mm] [±0.10 mm]
[±0.12 mm]
Min, Max, Min, Max,
mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in.
mm mm in. in.
1 in. OD 10CF 25.40 1.000 12.0 0.472 6 3.3 3.5 0.130 0.138 m3–05 n/a 17.5 0.689 0.1 0.004 13.49 0.531 10.49 0.413 3.00 0.118 n/a n/a 6.0 0.236
1 ⁄3 in. OD 16CF 33.86 1.333 19.3 0.760 6 4.3 4.6 0.171 0.180 m4–07 #8–32 27.0 1.062 0.2 0.009 21.39 0.842 18.29 0.720 4.57 0.180 6.50 0.256 6.6 0.260
1 1
2 ⁄8 in. OD 25CF 53.98 2.125 25.7 1.010 4 6.7 6.9 0.264 0.273 m6–1.0 ⁄4 –28 41.3 1.625 0.2 0.009 33.02 1.300 27.69 1.090 4.32 0.170 7.06 0.278 11.4 0.450
3 1
2 ⁄4 in.
...

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SCOPE
1.1 This test method determines the two-dimensional flexural properties of sandwich composite plates subjected to a distributed load. The test fixture uses a relatively large square panel sample which is simply supported all around and has the distributed load provided by a water-filled bladder. This type of loading differs from the procedure of Test Method C393, where concentrated loads induce one-dimensional, simple bending in beam specimens.  
1.2 This test method is applicable to composite structures of the sandwich type which involve a relatively thick layer of core material bonded on both faces with an adhesive to thin-face sheets composed of a denser, higher-modulus material, typically, a polymer matrix reinforced with high-modulus fibers.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    12 pages
    English language
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ASTM
ASTM D3019/D3019M-17(2024)(Specification)
Standard Specification for Lap Cement Used with Asphalt Roll Roofing, Non-Fibered, and Fibered

ABSTRACT
This specification covers the physical requirements and testing of three types of lap cement for use with asphalt roll roofing. Type I is a brushing consistency lap cement intended for use in the exposed-nailing method of roll roofing application, and contains no mineral or other stabilizers. This type is further divided into two grades, as follows: Grade 1, which is made with an air-blown asphalt; and Grade 2, which is made with a vacuum-reduced or steam-refined asphalt. Both Types II and III, on the other hand, are heavy brushing or light troweling consistency lap cement intended for use in the concealed-nailing method of roll roofing application, only that Type II cement contains a quantity of short-fibered asbestos, while Type III cement contains a quantity of mineral or other stabilizers, or both, but contains no asbestos. The lap cements shall be sampled for testing, and shall adhere to specified values of the following properties: water content; distillation (total distillate at given temperatures); softening point of residue; solubility in trichloroethylene; and strength at indicated age.
SCOPE
1.1 This specification covers lap cement consisting of asphalt dissolved in a volatile petroleum solvent with or without mineral or other stabilizers, or both, for use with roll roofing. The fibered version of these cements excludes the use of asbestos fibers.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 The following precautionary caveat applies only to the test method portion, Section 6, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
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