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Steel Making

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

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

Annealing Work
With the exception of several of the higher types of alloy s...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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



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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