Effect of Steel Manufacturing
Processes on the Quality of
Bearing Steels
STP 987
The fatigue life of rolling bearings has experienced a significant increase in the past several
years. The improvement is attributed to the lowering of oxygen content in the bearing steels to
the level of less than 10 parts per million by weight. This accomplishment is the direct result
of new ladle degassing practices adopted in the steel making processes. Associated with this
progress the methods used to evaluate the quality of bearing steels have been also improved,
refined, and in many instances newly developed.
It is very timely for the American Society for Testing and Materials Committee AOl,
Subcommittee AOl.28 on Bearing Steels to sponsor an international symposium on the theme
of effect of steel manufacturing processes on the quahty of bearing steels. The symposium was
held on 4 to 6 Nov. 1986 in Phoenix, Arizona. This is the third symposium sponsored by
ASTM Subcommittee AOl.28 since May 1974 on bearing steels. We have set up a target that
for every five to six years we will provide a forum for bearing steel producers and users to get
together to present their latest research results, the newest state of the art, and to discuss the
direction for future development. The response from the scientific and engineering community
in the world has been very enthusiastic. This symposium in Phoenix received papers from
Canada, France, Grermany, Italy, Japan, Netherlands, Sweden, United Kingdom, and the
United States. Almost all the major rolling bearing and bearing steel manufacturers in the
developed countries participated. We are extremely gratified for both the quaUty and quantity
of the papers received.
Processes on the Quality of
Bearing Steels
STP 987
The fatigue life of rolling bearings has experienced a significant increase in the past several
years. The improvement is attributed to the lowering of oxygen content in the bearing steels to
the level of less than 10 parts per million by weight. This accomplishment is the direct result
of new ladle degassing practices adopted in the steel making processes. Associated with this
progress the methods used to evaluate the quality of bearing steels have been also improved,
refined, and in many instances newly developed.
It is very timely for the American Society for Testing and Materials Committee AOl,
Subcommittee AOl.28 on Bearing Steels to sponsor an international symposium on the theme
of effect of steel manufacturing processes on the quahty of bearing steels. The symposium was
held on 4 to 6 Nov. 1986 in Phoenix, Arizona. This is the third symposium sponsored by
ASTM Subcommittee AOl.28 since May 1974 on bearing steels. We have set up a target that
for every five to six years we will provide a forum for bearing steel producers and users to get
together to present their latest research results, the newest state of the art, and to discuss the
direction for future development. The response from the scientific and engineering community
in the world has been very enthusiastic. This symposium in Phoenix received papers from
Canada, France, Grermany, Italy, Japan, Netherlands, Sweden, United Kingdom, and the
United States. Almost all the major rolling bearing and bearing steel manufacturers in the
developed countries participated. We are extremely gratified for both the quaUty and quantity
of the papers received.
thanks for your visit