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

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Chromium
Chromium when alloyed with steel, has the characteristic func...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

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

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

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...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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

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

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...



Uses Of The Various Tempers Of Carbon Tool Steel






Category: HARDENING CARBON STEEL FOR TOOLS

DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pressing
and drop forgings. Mining drills to harden only. Easily weldable.

SMITHS' TOOL TEMPER.--No. 3-1/2: Large punches, minting and rivet
dies, nailmakers' tools, hammers, hot and cold sets, snaps and
boilermakers' tools, various smiths' tools, large shear blades,
double-handed chisels, caulking tools, heading dies, masons' tools
and tools for general welding purposes.

SHEAR BLADE TEMPER.--No. 4: Punches, large taps, screwing dies,
shear blades, table cutlery, circular and long saws, heading dies.
Weldable.

GENERAL PURPOSE TEMPER.--No. 4-1/2: Taps, small punches, screwing
dies, sawwebs, needles, etc., and for all general purposes. Weldable.

AXE TEMPER.--No. 5: Axes, chisels, small taps, miners' drills and
jumpers to harden and temper, plane irons. Weldable with care.

CUTLERY TEMPER.--No. 5-1/2: Large milling cutters, reamers, pocket
cutlery, wood tools, short saws, granite drills, paper and tobacco
knives. Weldable with very great care.

TOOL TEMPER.--No. 6: Turning, planing, slotting, and shaping tools,
twist drills, mill picks, scythes, circular cutters, engravers'
tools, surgical cutlery, circular saws for cutting metals, bevel
and other sections for turret lathes. Not weldable.

HARD TOOL TEMPER.--No. 6-1/2: Small twist drills, razors, small
and intricate engravers' tools, surgical instruments, knives. Not
weldable.

RAZOR TEMPER.--No. 7: Razors, barrel boring bits, special lathe
tools for turning chilled rolls. Not weldable.





Next: Steel For Chisels And Punches

Previous: Carbon Steels For Different Tools



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