ASTM A297 / A297M Grade HH

Chemical Properties

Carbon	Manganese	Silicon	Phosphorus	Sulfur	Chromium	Nickel	Molybdenum^A

Note A: Castings having a specified molybdenum range agreed upon by the manufacturer and the purchaser may also be furnished under these specifications.

Mechanical Properties

Tensile strength, ksi [MPa]	Yield strength, min, ksi [MPa]	Elongation in 2 in. [50 mm], min, %^A

Note A:When ICI test bars are used in tensile testing as provided for in this specification, the gage length to reduced section diameter ratio shall be 4 to 1.