Steel for corrosion-resistant rolling part and rolling part

Details Steel for corrosion-resistant rolling part and rolling part Steel for corrosion-resistant rolling part and rolling part

1989-11-28

1991-05-07

Yee, Deborah

Alloys or metallic compositions

Ferrous

Chromium containing, but less than 9 percent

420 90, 420105, 148333, 148334, 148906, C22C 3818

Patent

active

050135252

ABSTRACT:
The present invention provides a steel for a corrosion-resistant rolling part having excellent corrosion resistance, high quenching and tempering hardness, and excellent workability for use in linear bearings, ball screws and rolling bearings of industrial machinery which must be strictly prevented from undergoing environmental contamination due to oil and grease. The steel comprises 0.5% or more and 0.7% or less by weight of carbon, 0.1% or more and 1.5% or less by weight of silicon, 0.1% or more and 2.0% or less by weight of manganese, 3.0% or more and less than 6.0%, preferably 4.0% or more and 5.5% or less, by weight of chromium, 0.05% or less by weight of phosphorus, 0.03% or less, preferably 0.01% or less, by weight of sulfur and 0.0015% or less by weight of oxygen, and may further comprise at least one of 0.05% or more and 2.0% or less, preferably 0.05% or more and 1.0% or less, by weight of molybdenum and 0.1% or more and 0.8% or less, preferably 0.2% or more and 0.8% or less, by weight of copper, with the balance being iron and unavoidable impurities.

REFERENCES:
patent: 4729872 (1988-03-01), Kishida et al.

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