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Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Annealing
There is no mystery or secret about the proper annealing of d...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Piston Pin
The piston pin on an aviation engine must possess maximum res...

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...



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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