Below is the ASTM A17 (the oldest standard I have) which withdrawn in 1945. The American Society for Testing and Materials (ASTM) was formed in 1898, founded by Charles B. Dudley, Ph.D., a chemist. ASTM A 17 – 1929
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At 13.2 °C and below, pure tin transforms from the silvery, ductile metallic allotrope white tin (or β) having a body-centered tetragonal crystal structure to the brittle, nonmetallic, α-form grey tin with a diamond cubic structure. Accompanying this white to- …
MONEL is a group of alloys of nickel (from 52 to 67%) and copper, with small amounts of iron, manganese, and silicon. It is mainly used for its excellent corrosion resistance and is especially valued for applications in the marine, …
The owner of the photo above is best known For “Determining why the Liberty Ships were breaking in half during World War II” Do you know her name? You probably don’t know her. She was a metallurgist, a name lost in …
Piano wire, or “music wire”, is a specialized type of wire made for use in piano strings but also in other applications as springs. Piano wire has a very high tensile strength to cope with the heavy demands placed upon …
عکس زیر 30 سال پیش یعنی تیرماه 1374 در دانشکده‌ی مهندسی شماره 2 دانشگاه شیراز گرفته شده که در این قاب، در کنار هم‌رشته‌ای‌هایم حضور دارم. آن‌وقتها گاهی به این فکر می‌کردم که وقتی دانشگاه تمام شد و از هم …
یکم خرداد ماه روز ملی معدن است. به همین مناسبت در فایل زیر کوشش شده تا یادی شود از هم‌میهنان سرشناس حوزه‌ی معدن و علوم زمین. اگر شما هم افرادی را می‌شناسید که نامشان از قلم افتاده است، خواهشمندم آنها …
The Greek Ship (Persian: کشتی یونانی, Kešti-ye Yunāni) is the nickname of a cargo steamship that has been beached on the southwest coast of Kish Island, Iran, since 1966. She was built in 1943 by the British shipyard of William Hamilton and Company in Port Glasgow, Scotland. Length 130 m …
شاهنامه یکی از پربهاترین آثار ادبی ماست که همچون گوهری بی‌مانند در گنجینه‌ی ادبیات جهان، تا به امروز، درخشش و تابندگی‌اش را از دست نداده است و 25 اردیبهشت‌ماه روز بزرگداشت و ارج نهادن به کوشش و تلاش ارجمند سراینده‌ی …
This presentation has been prepared to be used as a guide for validating the welding procedure specification (WPS)/procedure qualification record (PQR). It is not intended to be used for the development of a WPS or PQR. For creating these documents, …
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