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Steel Making

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

Crucible Steel
Crucible steel is still made by melting material in a clay or...

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

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

Martien was probably never a serious contender for the honor ...

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

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

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

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

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

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Vanadium has a very marked effect upon alloy steels rich in c...

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

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