Last Updated
：2025/11/29
self-hardening
Adjective
not-comparable
(metallurgy)
Designating,
or
pertaining
to,
any
of
various
steels
that
harden
when
heated
to
above
a
red
heat
and
cooled
in
air,
usually
in
a
blast
of
cold
air
with
moderate
rapidity,
without
quenching.
Such
steels
are
alloys
of
iron
and
carbon
with
manganese,
tungsten
and
manganese,
chromium,
molybdenum
and
manganese,
etc.
They
are
chiefly
used
as
high-speed
steels.
Japanese Meaning
(冶金) 赤熱以上に加熱された後、焼入れを行わずに空冷（または冷気の吹付け）で冷却する際に、鋼が自然に硬化する性質を示すもの。鉄と炭素を主成分とし、マンガン、タングステン、クロム、モリブデンなどの合金元素が添加され、高速工具鋼などとして利用される鋼種を指す。
Sense（1）
(metallurgy)
Designating,
or
pertaining
to,
any
of
various
steels
that
harden
when
heated
to
above
a
red
heat
and
cooled
in
air,
usually
in
a
blast
of
cold
air
with
moderate
rapidity,
without
quenching.
Such
steels
are
alloys
of
iron
and
carbon
with
manganese,
tungsten
and
manganese,
chromium,
molybdenum
and
manganese,
etc.
They
are
chiefly
used
as
high-speed
steels.
Quizzes for review
(metallurgy) Designating, or pertaining to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high-speed steels.
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See correct answer
self-hardening
The engineer selected a self-hardening high-speed steel for the drill bits so they would harden when heated and allowed to cool in air.
See correct answer
The engineer selected a self-hardening high-speed steel for the drill bits so they would harden when heated and allowed to cool in air.
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