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Steel Making

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

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

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

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

The Influence Of Size
The size of the piece influences the physical properties obta...

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

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...



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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Previous: Sulphur



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