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Steel Making

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

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

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

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

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

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

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

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

Hardening
The forgings can be hardened by cooling in still air or quen...

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

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

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

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

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



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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