Alloy for spring, plate material for spring, and spring member
OwnerYasunori Akasaka, Kyotaro Takahashi +3inventors
InventorsYasunori Akasaka, Kyotaro Takahashi, Takashi Kamada, Ryo Sugawara, Tomoo Kobayashi
Life of this patent
Estimating the term…
Abstract
Provided are an alloy for spring, a plate material for spring, and a spring member, all of which are high in mechanical strength, also high in fatigue strength, and excellent in corrosion resistance. An alloy for spring of the present invention includes, as composition in terms of weight ratio, 28 to 42% Co, 10 to 27% Cr, 3 to 12% Mo, 15 to 40% Ni, 0.1 to 1.0% Ti, 1.5% or less Mn, 0.1 to 26.0% Fe, 0.1% or less C, and inevitable impurities, and at least one kind selected from 3.0% or less Nb, 5.0% or less W, 0.5% or less Al, 0.1% or less Zr, and 0.01% or less B.
Claims9
An alloy for spring, comprising, as composition in terms of weight ratio, 28 to 42% Co, 10 to 27% Cr, 3 to 12% Mo, 15 to 40% Ni, 0.1 to 1.0% Ti, 1.5% or less Mn, 0.1 to 26.0% Fe, 0.1% or less C, and inevitable impurities, and at least one kind selected from 3.0% or less Nb, 5.0% or less W, 0.5% or less Al, 0.1% or less Zr, and 0.01% or less B.
Dependencies are inferred from the claim text.