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Steel Making

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

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

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

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

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

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



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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