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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

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

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

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

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

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

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

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

Hardening
The forgings can be hardened by cooling in still air or quen...

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

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

Hardness Testing
The word hardness is used to express various properties of me...

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

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

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

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...



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
------------------------------------------------------------------------------





Next: Non-shrinking Oil-hardening Steels

Previous: Sulphur



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