| Herr H. V. Hilprecht is Professor of Assyriology in the University of Pennsylvania. That university had despatched an expedition to explore the ruins of Babylon, and sketches of the objects discovered had been sent home. Among these were draw... Read more of The Assyrian Priest at Scary Stories.ca |  InformationalPrivacy |
Steel MakingWilliam Kelly's Air-boiling ProcessAn account of Bessemer's address to the British Association w... The Packing Department In Fig. 56 is shown the packing pots where the work is packe... Carburizing Low-carbon Sleeves Low-carbon sleeves are carburized and pushed on malleable-ir... A Chromium-cobalt Steel The Latrobe Steel Company make a high-speed steel without tun... Heat Treatment Of Lathe Planer And Similar Tools FIRE.--For these tools a good fire is one made of hard foundr... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Fatigue Tests It has been known for fifty years that a beam or rod would fa... The Penetration Of Carbon Carburized mild steel is used to a great extent in the manufa... Shrinking And Enlarging Work Steel can be shrunk or enlarged by proper heating and cooling... Properties Of Steel Steels are known by certain tests. Early tests were more or l... Plant For Forging Rifle Barrels The forging of rifle barrels in large quantities and heat-tre... Compensating Leads By the use of compensating leads, formed of the same materia... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Phosphorus PHOSPHORUS is an element (symbol P) which enters the metal fr... Take Time For Hardening Uneven heating and poor quenching has caused loss of many ve... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... Corrosion This steel like any other steel when distorted by cold worki... High Speed Steel For centuries the secret art of making tool steel was handed ... Composition And Properties Of Steel It is a remarkable fact that one can look through a dozen tex... |
Properties Of Alloy SteelsCategory: ALLOYS AND THEIR EFFECT UPON STEEL The following table shows the percentages of carbon, manganese, nickel, chromium and vanadium in typical steel alloys for engineering purposes. It also gives the elastic limit, tensile strength, elongation and reduction of area of the various alloys, all being given the same heat treatment with a drawing temperature of 1,100 deg.F. (600 deg.C.). The specimens were one inch rounds machined after heat treatment. Tungsten is not shown in the table because it is seldom used in engineering construction steels and then usually in combination with chromium. Tungsten is used principally for the magnets of magnetos, to some extent in the manufacture of hacksaws, and for special tool steels. TABLE I.--PROPERTIES OF ALLOY STEELS ------------------------------------------------------------------------------ Manganese,/ Chromium,/ ElasticTensile ElongationReduction Carbon, per /Nickel, per /Vanadium,limit, Strength,in 2 in., of area, per cent per cent per cent lb. perlb. per per cent per cent cent cent sq. in.sq. in. ---------------------------------------------------------------------- 0.27 0.55 49,000 80,000 30 65 0.27 0.47 0.26 66,000 98,000 25 52 0.36 0.42 58,000 90,000 27 60 0.34 0.87 0.13 82,500 103,000 22 57 0.45 0.50 65,000 96,000 22 52 0.43 0.60 0.32 96,000 122,000 21 52 0.47 0.90 0.15 102,000 127,500 23 58 0.30 0.60 3.40 75,000 105,000 25 67 0.33 0.63 3.60 0.25 118,000 142,000 17 57 0.30 0.49 3.60 1.70 119,000 149,500 21 60 0.25 0.47 3.47 1.60 0.15 139,000 170,000 18 53 0.25 0.50 2.00 1.00 102,000 124,000 25 70 0.38 0.30 2.08 1.16 120,000 134,000 20 57 0.42 0.22 2.14 1.27 0.26 145,000 161,500 16 53 0.36 0.61 1.46 0.64 117,600 132,500 16 58 0.36 0.50 1.30 0.75 0.16 140,000 157,500 17 54 0.30 0.50 0.80 90,000 105,000 20 50 0.23 0.58 0.82 0.17 106,000 124,000 21 66 0.26 0.48 0.92 0.20 112,000 137,000 20 61 0.35 0.64 1.03 0.22 132,500 149,500 16 54 0.50 0.92 1.02 0.20 170,000 186,000 15 45 ------------------------------------------------------------------------------ Next: Non-shrinking Oil-hardening Steels Previous: Sulphur
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