A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
(A) No. 2 Temper. In low carbon cold-rolled strip steel, produced
by cold rolling to a hardness next to but somewhat softer than
full hard temper. (B) In brass Stainless Steel Strip, tempers
are based on minimum tensile or yield strength. For Chromium-Nickel
grades Half-Hard Temper 150,000 TS., 110,000 YS. Min.
Drawing metal wire through a die to reduce cross section and
increase tensile strength.
Wire or tubing drawn to high tensile strength by a high degree
of cold work.
A medium high carbon cold drawn spring steel wire. Used principally
for cold springs.
The ability of a metal, usually steel, to harden in depth as
distinguished from the terms “hardness.”
A medium or high carbon quality steel strip which has been subjected
to the sequence of heating, quenching and tempering.
Any process which increases the hardness of a metal. Usually
heating and quenching certain iron base alloys from a temperature
either within or above the critical temperature range.
Degree to which a metal will resist cutting, abrasion, penetration,
bending and stretching. The indicated hardness of metals will
differ somewhat with the specific apparatus measuring hardness.
(See Brinell Hardness, Rockwell Hardness, Vickers Hardness, Scleroscope
Hardness) Tensile Strength also is an indication of hardness.
(A) For Steel see Full Hard Temper. (B) In brass mill terminology.
Hard Temper is four B & S numbers hard or 37.1 % reduction.
The product of a single melting operation in a furnace, starting
with the charging of raw materials and ending with the tapping
of molten metal and consequently identical in its characteristics.
Altering the properties of a metal by subjecting it to a sequence
of temperature changes, time of retention at specific temperature
and rate of cooling therefrom being as important as the temperature
itself. Heat treatment usually markedly affects strength, hardness,
ductility, malleability, and similar properties of both metals
and their alloys.
65% - A copper-zinc alloy containing 35% zinc. Possesses high
tensile strength and is used for springs, screws, rivets, etc.
Stress is proportional to strain in the elastic range. The value
of the stress at which a material ceases to obey Hooke’s
law is known as the elastic limit.
In steel mill practice, a process whereby ferrous alloy base
metals are dipped into molten metal, usually zinc, tin or terne,
for the purpose of fixing a rust resistant coating.
Brittleness in hot metal.
(See Sinkhead)
Plastic deformation of metal at a temperature sufficiently high
not to create strain hardening. The lower limit of temperature
for this process is the recrystallization temperature.
(1) Brittleness of metal, resulting from the occlusion
of hydrogen (usually as a by-product of pickling or by co-deposition
in electroplating). (2) A condition of low ductility resulting
from hydrogen absorption and internal pressure developed subsequently.
Electrolytic copper exhibits similar results when exposed to
reducing atmosphere at elevated temperature.
A steel having more than the eutectoid percentage of carbon.
(See Eutectoid Steel)
Steel with less than eutectoid percentage of carbon. (See Eutectoid
Steel)
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