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Steel Making

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Quenching
It is considered good practice to quench alloy steels from th...

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

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

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

Impact Tests
Impact tests are of considerable importance as an indication ...

Heating
Although it is possible to work steels cold, to an extent de...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

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

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...



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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