Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking

An alloy for use in manufacturing high strength deep well casing and tubing having improved resistance to stress corrosion cracking, the alloy composition consisting essentially of:

• ______________________________________ C:
• .ltoreq. 0.1% Si:
• .ltoreq. 1.0% Mn:
• .ltoreq. 2.0% P:
• .ltoreq. 0.030% S:
• .ltoreq. 0.005% N:
• 0-0.30% Ni:
• 25-60% Cr:
• 22.5-40% Mo:
• 0-3.5% (excl.) W:
• 0-7% (excl.) Cr (%) + 10Mo (%) + 5W (%) .gtoreq. 50% 1.0% .ltoreq. Mo (%) + 1/2W (%) <
• 3.5% Cu:
• 0-2.0% Co:
• 0-2.0% Rare earths:
• 0-0.10% Y:
• 0-0.20% Mg:
• 0-0.10% Ca:
• 0-0.10% one or more of Nb, Ti, Ta, Zr and V in the total amount of 0.5-4.0% Fe and incidental impurities:
• balance. ______________________________________

An alloy for use in manufacturing high strength deep well casing and tubing having improved resistance to stress-corrosion cracking, the alloy composition consisting essentially of:

• ______________________________________ C:
• .ltoreq. 0.1% Si:
• .ltoreq. 1.0% Mn:
• .ltoreq. 2.0% P:
• .ltoreq. 0.030% S:
• .ltoreq. 0.005% N:
• 0-0.30% Ni:
• 25-60% Cr:
• 22.5-40% Mo:
• 0-3.5% (excl.) W:
• 0-7% (excl.) Cr (%) + 10Mo (%) + 5W (%) .gtoreq. 50%, 1.0% .ltoreq. Mo (%) + 1/2W (%) <
• 3.5% Cu:
• 0-2.0% Co:
• 0-2.0% Rare earths:
• 0-0.10% Y:
• 0-0.20% Mg:
• 0-0.10% Ca:
• 0-0.10% Fe and incidental impurities:
• balance. ______________________________________

An alloy for use in manufacturing high strength deep well casing and tubing having improved resistance to stress corrosion cracking, the alloy composition consisting essentially of:

• ______________________________________ C:
• .ltoreq. 0.1% Si:
• .ltoreq. 1.0% Mn:
• .ltoreq. 2.0% P:
• .ltoreq. 0.030% S:
• .ltoreq. 0.005% N:
• 0.05-0.30% Ni:
• 25-60% Cr:
• 22.5-40% Mo:
• 0-3.5% (excl.) W:
• 0-7% (excl.) Cr (%) + 10Mo (%) + 5W (%) .ltoreq. 50%, 1.0% .ltoreq. Mo (%) + 1/2W (%) <
• 3.5% Cu:
• 0-2.0% Co:
• 0-2.0% Rare earths:
• 0-0.10% Y:
• 0-0.20% Mg:
• 0-0.10% Ca:
• 0-0.10% one or more of Nb, Ti, Ta, Zr and V in the total amount of 0.5-4.0% Fe and incidental impurities:
• balance. ______________________________________

An alloy for use in manufacturing high strength deep well casinng and tubing having improved resistance to stress corrosion cracking, the alloy composition consisting essentially of:

• ______________________________________ C:
• .ltoreq. 0.1% Si:
• .ltoreq. 1.0% Mn:
• .ltoreq. 2.0% P:
• .ltoreq. 0.030% S:
• .ltoreq. 0.005% N:
• 0.05-0.30% Ni:
• 25-60% Cr:
• 22.5-40% Mo:
• 0-3.5% (excl.) W:
• 0-7% (excl.) Cr (%) + 10Mo (%) + 5W (%) .ltoreq. 50%, 1.0% .ltoreq. Mo (%) + 1/2W (%) <
• 3.5% Cu:
• 0-2.0% Co:
• 0-2.0% Rare earths:
• 0-0.10% Y:
• 0-0.20% Mg:
• 0-0.10% Ca:
• 0-0.10% one or more of Nb and V in the total amount of 0.5-4.0% Fe and incidental impurities:
• balance. ______________________________________