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Steel Making

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

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

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

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

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

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

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

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

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

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

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...



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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