ASTM A890 Grade 1B, CD4MCuN casting
Chemical Composition, weight % Carbon: 0.04 Max Manganese: 1.00 Max Silicon: 1.00 Max Phosphorus: 0.04 Max Sulfur: 0.04 Max Chromium: 24.5-26.5 Nickel: 4.7-6.0 Molybdenum: 1.7-2.3 Copper: 2.7-3.3 Nitrogen: 0.10-0.25 Tensile Requirements Tensile Strength, ksi: 100 Min Yield Strength, ksi: 70 Min Elongation in 2 in.: 16% Min Similar Specifications Cast UNS: J93372