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Steel Making

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

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

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

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

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

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

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

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

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

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Chromium
Chromium when alloyed with steel, has the characteristic func...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...



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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