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Steel Making

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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

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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

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

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

Machineability
Reheating for machine ability was done at 100 deg. less than ...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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



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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