To provide a martensitic stainless steel pipe superior in corrosion resistance, crushing resistance and toughness, and to provide a method for manufacturing the above steel pipe without heat-treating it.
(1) The martensitic stainless steel pipe comprises 0.01-0.10% C, 9.0-15.0% Cr, 0.1-7.0% Ni, 0.005-0.1% N, 0.05-1.0% Si, 0.05-1.5% Mn, 0.1-5.0% Cu, 0.1-3.0% Mo, 0.01-0.20% V, 0.0005% or more but less than 0.05% Al and the balance Fe with impurities, while having P and S in the impurities respectively controlled to 0.03% or less and 0.01% or less; and has 0.3 to 1.3% of a share of austenite in a structure; and has an absolute value of compressive residual stress in a circumferential direction of 1.0 MPa or less. (2) The manufacturing method comprises finish-working a steel material having a temperature of Ac
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Nobuyuki Mori
JP2002004009A | ||||
JP2002030392A | ||||
JP2002348610A | ||||
JP63210236A |
Terutada Hogami
Mikiji Sugioka