ASTM C1835-16(2023)
Standard Classification for Fiber Reinforced Silicon Carbide-Silicon Carbide (SiC-SiC) Composite Structures

Standard No.

ASTM C1835-16(2023)

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C1835-16(2023)

Scope

1.1  This classification covers silicon carbide-silicon carbide (SiC-SiC) composite structures (flat plates, rectangular bars, round rods, and tubes) manufactured for structural components. The SiC-SiC composites consist of continuous silicon carbide fibers in a silicon carbide matrix produced by four different matrix densification methods. 1.2  The classification system provides a means of identifying and organizing different SiC-SiC composites, based on the fiber type, architecture class, matrix densification, physical properties, and mechanical properties. The system provides a top-level identification system for grouping different types of SiC-SiC composites into different classes and provides a means of identifying the general structure and properties of a given SiC-SiC composite. It is meant to assist the ceramics community in developing, selecting, and using SiC-SiC composites with the appropriate composition, construction, and properties for a specific application. 1.3  The classification system produces a classification code for a given SiC-SiC composite, which shows the type of fiber, reinforcement architecture, matrix type, fiber volume fraction, density, porosity, and tensile strength and modulus (room temperature). 1.3.1  For example, Composites Classification Code, SC2-A2C-4D10-33 —a SiC-SiC composite material/component (SC2 ) with a 95 %+ polymer precursor (A ) based silicon carbide fiber in a 2-D (2 ) fiber architecture with a CVI matrix (C ), a fiber volume fraction of 45 % (4 = 40 % to 45 %), a bulk density of 2.3 g/cc (D = 2.0 g/cc to 2.5 g/cc), an apparent porosity of 12 % (10 = 10 % to 15 %), an average ultimate tensile strength of 350 MPa (3 = 300 MPa to 399 MPa), and an average tensile modulus of 380 GPa (3 = 300 GPa to 399 GPa). 1.4  This classification system is a top level identification tool which uses a limited number of composite properties for high level classification. It is not meant to be a complete, detailed material specification, because it does not cover the full range of composition, architecture, physical, mechanical, fabrication, and durability requirements commonly defined in a full design specification. Guide C1793 provides extensive and detailed direction and guidance in preparing a complete material specification for a given SiC-SiC composite component. 1.5  Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6  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. 1.7  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.

ASTM C1835-16(2023) Referenced Document

• ASTM C1039 Standard Test Methods for Apparent Porosity, Apparent Specific Gravity, and Bulk Density of Graphite Electrodes
• ASTM C1145 Standard Terminology of Advanced Ceramics
• ASTM C1198 Standard Test Method for Dynamic Young's Modulus, Shear Modulus, and Poisson's Ratio for Advanced Ceramics by Sonic Resonance
• ASTM C1259 Standard Test Method for Dynamic Young''s Modulus, Shear Modulus, and Poisson''s Ratio for Advanced Ceramics by Impulse Excitation of Vibration
• ASTM C1275 Standard Test Method for Monotonic Tensile Behavior of Continuous Fiber-Reinforced Advanced Ceramics with Solid Rectangular Cross-Section Test Specimens at Ambient Temperature*， 2024-04-21 Update
• ASTM C1773 Standard Test Method for Monotonic Axial Tensile Behavior of Continuous Fiber-Reinforced Advanced Ceramic Tubular Test Specimens at Ambient Temperature
• ASTM C1793 Standard Guide for Development of Specifications for Fiber Reinforced Silicon Carbide-Silicon Carbide Composite Structures for Nuclear Applications*， 2024-01-01 Update
• ASTM C242 Standard Terminology of Ceramic Whitewares and Related Products
• ASTM C559 Standard Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles
• ASTM D3878 Standard Terminology Composite Materials
• ASTM D4850 Standard Terminology Relating to Fabrics and Fabric Test Methods*， 2023-09-14 Update
• ASTM D6507 Standard Practice for Fiber Reinforcement Orientation Codes for Composite Materials
• ASTM E111 Standard Test Method for Young''s Modulus, Tangent Modulus, and Chord Modulus
• ASTM E1309 Standard Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases*， 2024-04-21 Update
• ASTM E6 Standard Terminology Relating to Methods of Mechanical Testing

ASTM C1835-16(2023) history

• 2023 ASTM C1835-16(2023) Standard Classification for Fiber Reinforced Silicon Carbide-Silicon Carbide (SiC-SiC) Composite Structures
• 2016 ASTM C1835-16 Standard Classification for Fiber Reinforced Silicon Carbide-Silicon Carbide (SiC-SiC) Composite Structures