ASTM C767-24 PDF
Name in English:
St ASTM C767-24
Name in Russian:
Ст ASTM C767-24
Original standard ASTM C767-24 in PDF full version. Additional info + preview on request
Full title and description
ASTM C767-24 — Standard Test Method for Thermal Conductivity of Carbon Refractories. This test method supplements Test Method C201 and sets out the procedure for determining thermal conductivity of carbon and carbon-bearing refractories using a calorimeter arrangement, including placement of thermocouples and specimen positioning. It is intended for materials with conductivity factors up to approximately 200 Btu·in./h·ft²·°F (≈28.8 W/m·K).
Abstract
ASTM C767-24 specifies the test procedure to measure thermal conductivity of carbon-containing refractories under steady-state, large thermal-gradient conditions in conjunction with Test Method C201. The method describes specimen preparation and calorimeter instrumentation (thermocouple placement) and yields data suitable for specification acceptance, estimating heat loss and cold-face temperatures, and design of multi-layer refractory assemblies. Inch‑pound units are the standard for the method; SI conversions are provided for information.
General information
- Status: Active (current).
- Publication date: Published in 2024 (issued August 2024; catalog metadata shows an update dated August 21, 2024).
- Publisher: ASTM International.
- ICS / categories: Refractories and related industrial chemicals — ICS codes commonly associated: 81.080 (Refractories) and 71.100.99 (Other products of the chemical industry).
- Edition / version: Designation C767-24 (supersedes/revises C767-20).
- Number of pages: 3 pages (concise test method).
Scope
This test method supplements Test Method C201 and shall be used in conjunction with C201 to determine the thermal conductivity of carbon or carbon-bearing refractories. It is intended for refractories having a conductivity factor not greater than about 200 Btu·in./h·ft²·°F (≈28.8 W/m·K). The standard specifies instrumentation and specimen placement in the calorimeter and notes that the test results are based on a mean temperature. Safety and application-environment considerations are the responsibility of the user.
Key topics and requirements
- Use in conjunction with Test Method C201 (primary calorimetric test procedure).
- Placement and mounting of test specimens in the calorimeter and thermocouple locations to measure through-thickness temperature gradient.
- Applicability limited to carbon or carbon-bearing refractories with conductivity up to ≈200 Btu·in./h·ft²·°F (≈28.8 W/m·K).
- Steady-state, large thermal‑gradient testing and reporting based on mean specimen temperature.
- Inch‑pound units specified as the standard; SI unit conversions provided for information only.
- Data intended for specification acceptance, heat‑loss estimation, cold‑face temperature prediction, and multi‑layer refractory design.
Typical use and users
Used by refractory manufacturers, independent testing laboratories, quality control and R&D groups, materials engineers, and specification writers for industrial furnaces, heat‑processing equipment, and other high‑temperature installations. Typical applications include selection and quality acceptance of carbon refractories, thermal performance comparisons, and inputs to thermal design calculations for multi‑layer refractory linings.
Related standards
Commonly referenced and related ASTM standards include Test Method C201 (primary calorimetric method for thermal conductivity of refractories), Test Method C202 (thermal conductivity of refractory brick — related procedure for non‑carbon refractories), Test Method C182 (insulating firebrick methods), and the prior edition ASTM C767-20 (the 2024 designation supersedes the 2020 version).
Keywords
thermal conductivity, carbon refractories, calorimeter, C201, steady‑state, thermocouple placement, thermal conductivity factor, refractory testing, ASTM C767-24
FAQ
Q: What is this standard?
A: ASTM C767-24 is a Standard Test Method that defines the procedure to determine thermal conductivity of carbon and carbon-bearing refractories using a calorimeter arrangement, to be used together with Test Method C201.
Q: What does it cover?
A: It covers instrumentation and specimen positioning (including thermocouple placement), testing under large thermal gradients and steady‑state conditions, and reporting of thermal conductivity values (reported on a mean temperature basis) for carbon refractories with conductivity factors up to about 200 Btu·in./h·ft²·°F (≈28.8 W/m·K).
Q: Who typically uses it?
A: Refractory manufacturers, industrial furnace designers, materials test laboratories, R&D and QC personnel, and specifiers who need validated thermal conductivity data for carbon refractories.
Q: Is it current or superseded?
A: It is current (designation C767-24). It revises the prior edition C767-20.
Q: Is it part of a series?
A: Yes — it is part of ASTM‘s suite of refractory thermal‑property test methods and is explicitly supplemental to Test Method C201; related methods include C202 (refractory brick), C182 (insulating firebrick), and others in the C08 committee portfolio.
Q: What are the key keywords?
A: Thermal conductivity, carbon refractories, calorimeter, Test Method C201, thermocouple placement, refractory testing, thermal design.