ASTM A1082 Specification

Chemical Composition

UNS DesignationB TypeB Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other Elements
Duplex (Ferritic-Austenitic) Grades
S32750 2507 0.030 1.20 0.035 0.020 0.80 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 Cu 0.50
Note:

A. Maximum or range unless otherwise indicated.
B. See Guide A959/A959M.

Heat Treatment and Mechanical Property Requirements for Duplex Grades A

UNS Designation Solution Temperature, °F [°C] B,C Size Range Mechanical Properties
Tensile Strength, ksi [MPA] Yield Strength, ksi [MPA] Elongation in 2” [50 mm] or 4D % HardnessD
Rockwell, HRC maximum Brinell, maximum
S32750 1880 - 2060
[1025 - 1125]		 2 in. and under 116[800] 80 [550] 15 33 310
Note:

A. Values shown are minimums or ranges unless maximum is indicated.
B. ± 25°F [15°C].
C. Quenched in water.
D. Either Rockwell or Brinell testing is permitted unless thickness is below 1⁄2 ” in which case Rockwell is preferred.

Product Marking

UNS Designation Type Condition Grade Symbol
Duplex (Ferritic-Austenitic) Grade
S32750 2507 -- 32750