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

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Heating
Although it is possible to work steels cold, to an extent de...

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Corrosion
This steel like any other steel when distorted by cold worki...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Nickel-chromium
A combination of the characteristics of nickel and the charac...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Quenching The Work
In some operations case-hardened work is quenched from the bo...



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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