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Steel Making

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

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

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

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

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

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

The Modern Hardening Room
A hardening room of today means a very different place from ...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

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

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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



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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