Properties Of Alloy Steels





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

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\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.

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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

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