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Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Critical Points
One of the most important means of investigating the properti...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...



Properties Of Alloy Steels






Category: 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
------------------------------------------------------------------------------





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