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Steel Making

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

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

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

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

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

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

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Critical Points
One of the most important means of investigating the properti...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...



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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