ASTM C149 Test for Thermal Shock Resistance of Glass Containers
ASTM C149 determines the relative Thermal Shock Resistance of any commercial Glass Container (bottles and jars) that has to withstand sudden changes in temperature (thermal shock) while in use. This test is useful for commercial glass containers that have to withstand sudden changes in temperature during application in services.
Average 30% Cost Savings
100% Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
TRUSTED BY ENGINEERS FROM
ASTM C149 Test for Thermal Shock Resistance of Glass Containers
ASTM C149 determines the relative Thermal Shock Resistance of any commercial Glass Container (bottles and jars) that has to withstand sudden changes in temperature (thermal shock) while in use. This test is useful for commercial glass containers that have to withstand sudden changes in temperature during application in services.
Scope:
ASTM C149 determines the relative thermal shock resistance of commercial glass containers that have to withstand sudden changes in temperature during application in services such as washing, pasteurization, or when glass is transferred from a warm to a colder medium or vice versa.
The test apparatus consists essentially of a basket for holding the glassware upright, a hot water tank, a cold water tank, and a timed means for immersing and transferring the basket from the hot to the cold bath. Indicating controllers or dial thermometers are used to maintain the temperatures of the baths. Test procedures include pass tests, progressive tests to a predetermined percent of breakage, total progressive tests, and high-level tests.
Test Procedure:
For ASTM C149 testing, the temperature of the cold bath is adjusted to 21°C and the temperature of the hot bath is adjusted to a temperature differential (usually 42°C for the first immersion). The temperature differential is the difference in temperature between the hot bath and the cold bath.
Empty glass bottles are placed in a basket. When the temperature of the baths reaches the determined value, the basket is immersed in the hot bath. The glass bottles get filled with hot water. They are allowed to sit there for 5 minutes and then they are transferred to the cold bath. They are allowed to sit in the cold bath for 30s and then they are removed. Each individual container is inspected to determine the number of containers failing.
Different test procedures are used in ASTM C149 depending on the purpose of the test.
Pass Test: In this test, the temperature differential between the hot bath and the cold bath is predetermined and fixed. Glass Containers may or may not break. Pass test is used for the routine testing of samples from continuous production in a manufacturing plant.
Progressive Test (fraction): The temperature differential is increased by uniform increments by raising the temperature of the hot water bath until a predetermined percent of glass containers break.
Progressive Test (Total): This test is continued until all the containers break.
High-Level Test: The temperature differential is predetermined to be high enough to break all the glass containers.
Specimen Size:
The following specimen sizes are defined in ASTM C149 for each test method:
Pass Test: 50 containers, randomly selected, but representative of the mold cavities, are tested as the first sample in a double sampling method, followed, when necessary, by the second sample of 50 containers equally random and representative.
Progressive Test: A single sample of 50 containers is employed.
Data:
The following information is reported in ASTM C149:
The method of sampling.
The number of containers from each mold included in the sample.
Time of transfer used.
Results of test employed.
For the pass test, the following are reported: (1) temperature differential used, and (2) number of containers that failed the test.
For the progressive test (fraction): (1) differential at which the first failure occurred and the number of containers that failed at that differential, and (2) differential at which a predetermined percent of the sample broke.
For the progressive test (total): (1) differentials used during the test and number of containers that failed at each differential, and (2) average differential of failure.
For the high-level test: (1) differential used in the test, and (2) number of containers that failed at that differential.
Conclusion:
ASTM C149 determines the relative Thermal Shock Resistance of any commercial Glass Container (bottles and jars) that has to withstand sudden changes in temperature (thermal shock) while in use.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
Send us a request
Process for testing
STEP 01
You share material and testing requirements with us
STEP 02
You ship your sample to us or arrange for us to pick it up.
STEP 03
We deliver the test report to your email.
Just share your testing requirements and leave the rest on us!
Free, no-obligation consultation
Guaranteed confidentiality
Quick turnaround time
Hassle-free process
Let us combine our capabilities to achieve success!!