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Steel Making

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

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

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

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

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

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

Hardening
Steel is hardened by quenching from above the upper critical....

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

Annealing
ANNEALING can be done by heating to temperatures ranging from...

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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

Conclusions
Martien was probably never a serious contender for the honor ...

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



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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