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heat deflection temperature test

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... plastics manufacturers offer impact-modified grades, which are copolymers or blends with rubbery components or plasticizers. Processing temperatures and heat-deflection temperatures are generally lower than for unmodified grades. By tradition and expediency, the toughness of plastics has become...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... extensometry. A radio-frequency (RF) heat source has essentially no thermal inertia and thus is ideal, assuming that the material being tested couples to RF energy. High-quality closed-loop test equipment is available from several manufacturers, and high-temperature extensometers can readily be constructed in...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... or wedge-shaped cracks at grain triple points • Reaction scales or internal precipitation • Some cold flow in last stages of failure Contributing factors • Load exceeded the strength of the part • Check for proper alloy and processing by hardness check or destructive testing, chemical analysis...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... Fatigue or quench crack from steel stamp mark Crack initiation at hardness test indentations Failures associated with metalworking, welding, and heat treating operations are discussed in more detail in other articles in this Volume. Example 3 also illustrates the effects of manufacturing...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009009
EISBN: 978-1-62708-185-6
... Abstract This article describes the use of compression tests, namely, cylindrical compression, ring compression, and plane-strain compression tests at elevated temperatures. It discusses the effects of the temperature, strain rate, and deformation heating on metals during the cylindrical...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006252
EISBN: 978-1-62708-169-6
... cooling from the heat treatment temperature to the quenchant temperature generates a tensile core surrounded by an enclosing case of material stressed into compression. The magnitude of the surface stresses has been shown to increase with thickness up to a value that then remains constant. This value...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006283
EISBN: 978-1-62708-169-6
... strengthening Very weldable Low-to-medium strength Good notch toughness Good ductility Excellent cryogenic properties Good high-temperature creep strength Oxidation resistance Alpha-beta alloys Heat treatable to varying extents, depending on alloy Weldable, with reduced...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003200
EISBN: 978-1-62708-199-3
... wear resistance and improved fatigue strength. FLAME HARDENING is a heat-treating process in which a thin surface shell of a steel part is heated rapidly to a temperature above the critical point of the steel. After the grain structure of the shell has become austenitic (austenitized...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006270
EISBN: 978-1-62708-169-6
... by heat treatment and thermomechanical processing to enhance a specific property. Beta alloys: Have alloying that stabilizes significant amounts of beta phase at room temperature. However, the retained beta is still metastable. When these alloys are exposed to selected elevated temperatures...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
.... The article describes testing methods such as room and high-temperature strength test methods, proof testing, fracture toughness measurement, and hardness and wear testing. It also explains methods for determining thermal expansion, thermal conductivity, heat capacity, and emissivity of ceramics and...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... Abstract This article reviews the various types of mechanical testing methods, including hardness testing; tension testing; compression testing; dynamic fracture testing; fracture toughness testing; fatigue life testing; fatigue crack growth testing; and creep, stress-rupture, and stress...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... HY ship steels and weldments in an environment simulating seawater under conditions of cathodic protection commonly used to protect ship hulls. Samples from the heat-affected zone and other locations in the weld metal were tested. Interlayer gas tungsten arc heating was evaluated as a means of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... achieved by removing the barreling by machining after 40% strain and then continuing the test. Source: Ref 7 Evans and Scharning ( Ref 6 ) studied the systematic errors in flow stress determination in the hot compression test due to frictional forces at the interfaces and deformation heating during...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003027
EISBN: 978-1-62708-200-6
... This same type of yellowness occurs when plastics are degraded, either during processing or from long-term exposure to heat or damaging radiation from ultraviolet or shorter wavelengths. Because it is so common, there is a standard test for yellowness, ASTM D 1925, which applies to transparent, nearly...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003044
EISBN: 978-1-62708-200-6
... commonly used for materials of low conductivity. Holding specimens in the laboratory awaiting testing conditions them. If a specimen were heated to install tabs or instrumentation and then held in the laboratory awaiting testing, it could reabsorb moisture. Even more critical to the specimen is the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003103
EISBN: 978-1-62708-199-3
...; and the quenching medium that should be used in hardening. alloying carbon steels hardenability hardenability testing heat-treated products quenching of steel HARDENABILITY OF STEEL is the property that determines the depth and distribution of hardness induced by quenching. Steels that...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003024
EISBN: 978-1-62708-200-6
... effect of viscoelasticity on the test methods used. Two common ways of evaluating viscoelasticity of plastics are by means of creep experiments and dynamic mechanical experiments. Graphic or tabular analysis of test data, time-temperature superposition, and empirical correlation methods are commonly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... with temperature. Analysis is based on absolute and change of temperature following a stimulus. Locating near-surface discontinuities that alter heat transfer through object Requires precise control of environment, heat input, and high-resolution instrument. IR systems are sensitive to surface...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009011
EISBN: 978-1-62708-185-6
... on the actual specimen temperature during moderate-speed ( γ ˙ = 10 − 2  to  10 s − 1 ) torsion tests due to the effects of heat conduction. Because of this, flow curves derived from data obtained at these rates tend to show a dependence on the length-to-diameter...