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Steel MakingA Satisfactory Luting MixtureA mixture of fireclay and sand will be found very satisfactor... Conclusions Martien was probably never a serious contender for the honor ... Alloying Elements Commercial steels of even the simplest types are therefore p... Affinity Of Nickel Steel For Carbon The carbon- and nickel-steel gears are carburized separately... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Steel Before The 1850's In spite of a rapid increase in the use of machines and the ... Cyanide Bath For Tool Steels All high-carbon tool steels are heated in a cyanide bath. Wi... Pyrometers Armor plate makers sometimes use the copper ball or Siemens' ... Preventing Carburizing By Copper-plating Copper-plating has been found effective and must have a thick... The Influence Of Size The size of the piece influences the physical properties obta... Quenching The Work In some operations case-hardened work is quenched from the bo... Rate Of Absorption According to Guillet, the absorption of carbon is favored by ... The Modern Hardening Room A hardening room of today means a very different place from ... Manganese Manganese adds considerably to the tensile strength of steel,... Heat Treatment Of Steel Heat treatment consists in heating and cooling metal at defin... Corrosion This steel like any other steel when distorted by cold worki... Hardening High-speed Steel In forging use coke for fuel in the forge. Heat steel slowly ... Process Of Carburizing Carburizing imparts a shell of high-carbon content to a low-... Judging The Heat Of Steel While the use of a pyrometer is of course the only way to hav... Highly Stressed Parts The highly stressed parts on the Liberty engine consisted of ... |
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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