ASTM F2325-14
Standard Classification for Multi-Layer Steel (MLS) and Other Metal Layer Gaskets for Transportation Applications

Standard No.

ASTM F2325-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM F2325-14(2020)

Latest

ASTM F2325-14(2020)

Scope

4.1 This classification is intended to encourage uniformity in reporting properties of MLS and Metal Layer gaskets, to provide a common language for communications between producers and users, and to guide engineers and designers in the application and construction of commercially available gaskets.

(A) This classification may also be used to classify Single Layer Steel (SLS) Gaskets.

(B) Refer to Specification A666 or Specification A109/A109M for Stainless Steel and Low Carbon Steel, respectively. Other metals not referenced in the table or not covered by Specification A666 or Specification A109/A109M must be defined by the producer/user (that is, H – High Temperature Alloy).

(C) Refer to Practice D1418 for general information regarding rubber coating types and use Classification D2000 to define the physical properties of the rubber. This physical property information is typically specified on the gasket drawing or the customer specification, or both.

(D) Coated side as specified on part drawing.

4.2 Suffix Table 2 is provided to allow hardness designation for Active, Inactive, or Load Stoppers.

4.2.1 If suffixes are not to be used, only the basic callout from Table 1 is required. If a suffix is used for 1 layer, it must be specified for all layers, even if a “0” is used. It cannot be assumed that hardnesses of like layers are the same; if used, all layers must be specified separately. The first layer specified must be indicated on the part drawing. To use a hardness call-out, at the end of the base callout leave a space followed by the “HR” suffix with a series of suffix numbers to specify the hardnesses for each layer.

4.2.1.1 Example: ASTM F2325, A32ANBW11 HR252—Example from Table 1 modified to add hardness requirement for the three metal layers. Active layers 1 and 3 are designated to be the same, ¹/₄ hard steel. Stopper layer 2 is designated to be full hard steel.

1.1 This classification covers a means for specifying Multi-Layer Steel (MLS) and other Metal Layer Gaskets for Transportation Applications by application and construction. These structures are composed of one or more steel or metal layers of material, which may have coatings or embossments. Commercial materials designated as composite or enveloped gaskets are excluded from this classification and are covered by Classification F868 and Practice

ASTM F2325-14 Referenced Document

• ASTM A109/A109M Standard Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
• ASTM A666 Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
• ASTM D1418 Standard Practice for Rubber and Rubber Latices-Nomenclature
• ASTM D2000 Standard Classification System for Rubber Products in Automotive Applications
• ASTM F336 Standard Practice for Design and Construction of Nonmetallic Enveloped Gaskets for Corrosive Service
• ASTM F868 Standard Classification for Laminated Composite Gasket Materials

ASTM F2325-14 history

• 2020 ASTM F2325-14(2020) Standard Classification for Multi-Layer Steel (MLS) and Other Metal Layer Gaskets for Transportation Applications
• 2014 ASTM F2325-14 Standard Classification for Multi-Layer Steel (MLS) and Other Metal Layer Gaskets for Transportation Applications
• 2003 ASTM F2325-03(2009) Standard Classification for Multi-Layer Steel (MLS) and Other Metal Layer Gaskets for Transportation Applications
• 2003 ASTM F2325-03 Standard Classification for Multi-Layer Steel (MLS) and Other Metal Layer Gaskets for Transportation Applications