HD 28 Chromium, 5 Nickel A297/A297M

 

GradeHD (CENT, INVEST, SAND)

Type28 Chromium, 5 Nickel

 Chemical RequirementsComposition, %):

Carbon:0.5 max

Manganese, max:1.50

Silicon, max:2.00

Phosphorus, max:0.04

Sulfur, max:0.04

Chromium Nickel:26.0–30.0

Nickel:4.0—7.0

Molybdenum, max:0.50

HD Tensile Requirements

Tensile Strength, min

ksi :75

[MPa]:515

Yield Point, min

Ksi:35

[MPa]: 240

Elongation in 2 in. [50 mm], min, % :8

 HD Heat Treatment

Castings for heat-resistant service may be shipped in the as-cast condition without heat treatment. If heat treatment is required, the treatment shall be established by mutual agreement between the manufacturer and the purchaser and shall be so specified in the inquiry, contract, or order.

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