Temperate conditions
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This specification covers hot-wrought and cold-finished quenched and tempered alloy steel bars. Hot-wrought bars are available in three strength level classes designated BB, BC, and BD, and cold-finished bars in two strength level classes designated BB and BC. The bars are available in the conditions specified in 4.4 subject to the size limitations shown.
4p hth_hn_vn 10-12-2023 7 5 Download
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This specification covers low-alloy steels and martensitic stainless steels in the normalized and tempered, or quenched and tempered, condition suitable for pressurecontaining parts. The weldability of the classes in this specification varies from readily weldable to weldable only with adequate precautions, and the weldability of each class should be considered prior to assembly by fusion welding.
6p hth_hn_vn 10-12-2023 5 4 Download
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"Standard Specification for Chromium-Vanadium Alloy Steel Spring Wire" covers round and shaped chromium-vanadium alloy steel spring wire having properties and quality intended for the manufacture of springs used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition as specified by the purchaser.
4p hth_hn_vn 10-12-2023 6 4 Download
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"Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire" covers the highest quality of round chromium-vanadium alloy steel valve spring wire, uniform in quality and temper, intended for the manufacture of valve springs and other springs requiring high-fatigue properties when used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition as specified by the purchaser
4p hth_hn_vn 10-12-2023 7 4 Download
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"Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears" covers normalized and tempered carbon steel and quenched and tempered alloy steel forgings for pinions, gears, and shafts. All grades and classes are considered weldable under proper conditions. Welding technique is of fundamental importance and it is presupposed that welding procedure and inspection shall be in accordance with approved methods for the class of material used.
5p hth_hn_vn 10-12-2023 10 6 Download
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"Standard Specification for Carbon and Alloy Steel Forgings for Rings for Reduction Gears" covers normalized and tempered, and quenched and tempered, carbon and alloy steel forged or rolled rings for reduction gears. All grades and classes are considered weldable under proper conditions. Welding techniques are of fundamental importance and it is pre-supposed that welding procedure and inspection will be in accordance with proper methods for the class of material used.
4p hth_hn_vn 10-12-2023 7 4 Download
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This specification covers 8 and 9 % nickel-alloy steel forged or rolled flanges, fittings, valves, and parts intended for use in welded pressure vessels for low-temperature service. The specification is applicable to forgings with maximum section thickness of 3 in. [75 mm] in the double normalized and tempered condition and 5 in. [125 mm] in the quenched and tempered condition. Forgings under this specification are intended for service at operating temperatures not lower than −320 °F [−196 °C] for Type I or −275 °F [−170 °C] for Type II or higher than 250 °F [121 °C].
4p hth_hn_vn 10-12-2023 8 3 Download
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This specification covers one type of manganese-molybdenum and four types of manganese-molybdenumnickel alloy steel plates for use in the quenched and tempered condition for the construction of welded pressure vessels.
3p hth_hn_vn 10-12-2023 6 6 Download
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This specification2 covers nickel-chromiummolybdenum alloy steel plates for use in the quenched and tempered condition, intended for the fabrication of welded pressure vessels and other pressure equipment. These alloy compositions are normally considered for construction involving plate thicknesses of 2 in. [50 mm] or greater.
3p hth_hn_vn 10-12-2023 6 5 Download
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This specification2 covers 7, 8, and 9 nickel alloy steel plates for use in the water quenched and tempered condition intended for the fabrication of welded pressure vessels.
4p hth_hn_vn 10-12-2023 7 5 Download
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This specification2 covers requirements for quenched and tempered carbon and alloy steel forgings for pressure vessel components. All grades are considered weldable under proper conditions. Welding technique is of fundamental importance, and it is presupposed that welding procedure and inspection will be in accordance with approved methods for the grade of material used.
5p hth_hn_vn 10-12-2023 8 4 Download
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This specification2 covers two types of Cr-1 Mo and three types of Cr-Mo-V alloy steel plates for use in the quenched-and-tempered condition, intended for the fabrication of welded pressure vessels and components.
5p hth_hn_vn 10-12-2023 5 4 Download
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This specification covers carbon and alloy steel castings for pressure-containing and other applications intended primarily for petroleum and gas pipelines in areas subject to lowambient temperatures. Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. All classes are weldable under proper conditions. Hardenability of some grades may limit usable section size.
9p hth_hn_vn 10-12-2023 14 4 Download
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This specification covers chromium-molybdenumvanadium alloy steel plates intended primarily for the fabrication of welded pressure vessels. The plates furnished under this specification are required to be normalized-and-tempered. Specification A542/ A542M includes coverage of the material in the quenched-andtempered condition.
4p hth_hn_vn 10-12-2023 8 5 Download
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Pyomyositis is a clinical condition classically associated with tropical climates, but there are an increasing number of reports in temperate climates. We present a diabetic patient, who presented with gastrointestinal symptoms and right foot ulcer. He was found to have methicillin-resistant Staphylococcus aureus (MRSA).
5p viwhitewolf 03-07-2023 3 2 Download
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Pyomyositis is an uncommon acute bacterial infection of the skeletal muscle. It is sometimes referred to as “tropical pyomyositis” because it has been primarily reported as an endemic disease in tropical regions. In temperate climates, it is mainly diagnosed in immunocompromised persons, such as those with human immunodeficiency virus infection, malignancy, diabetes, and various other medical conditions.
6p viwhitewolf 03-07-2023 5 2 Download
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Brachypodium distachyon (L.) P.Beauv. is a model grass species that is useful for studying temperate cereal, forage, and energy crops. In this study we aimed to determine the genome size and species identity in the collections of the B. distachyon complex that included samples from 56 different locations in Turkey, applying chromosome counting and nuclear genome size evaluation by flow cytometry method (FCM). Moreover, the study examined whether diverse geographical conditions at the collecting sites influence the genome size. Chromosomal analysis revealed that the number of B.
12p tudichquannguyet 29-11-2021 5 1 Download
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Diapause is a natural phenomenon characterized by an arrest in development that ensures the survival of organisms under extreme environmental conditions. The process has been well documented in arthropods. However, its molecular basis has been mainly studied in species from temperate zones, leaving a knowledge gap of this phenomenon in tropical species.
11p vibeauty 23-10-2021 8 1 Download
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Rice plants are sensitive to the agro-climate conditions, being photoperiod one of main factor contributing to their adaptation to the region where they are grown. Dissecting the genetic bases underlying diversity in rice populations adapted to specific environmental conditions is a fundamental resource for breeding. In this study we have analysed a collection of japonica varieties adapted to temperate regions to perform association studies with traits of high agronomical interest such as heading date, plant height, number of panicles, panicle length and number of grains per panicle.
11p vitzuyu2711 29-09-2021 16 1 Download
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The reproductive phenology of perennial plants in temperate climates is largely conditioned by the duration of bud dormancy, and fruit developmental processes. Bud dormancy release and bud break depends on the perception of cumulative chilling and heat during the bud development.
16p vijichea2711 28-05-2021 8 1 Download