Home Steel Making Categories Manufacturing and the Economy of Machinery

Steel Making

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

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...

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

Steel is hardened by quenching from above the upper critical....

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

The material used for all gears on the Liberty engine was sel...

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

Chromium when alloyed with steel, has the characteristic func...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

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

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

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

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Uses Of The Various Tempers Of Carbon Tool Steel


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.

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

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

Add to Informational Site Network

Viewed 4576