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Steel Making

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

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

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

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

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

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

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

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

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



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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