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Steel, Corrosion and Heat-Resistant

15Cr - 25.5Ni - 1.2Mo - 2.1Ti - 0.006B - 0.30V, Consumable Electrode Melted, 1800 °F (982 °C) Solution Heat Treated

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  • UNS Number - UNS S66286
  • Specification - AMS 5731
  • Form - Bars, Wire, Forgings, Tubing, and Rings

General Information

This specification covers a corrosion and heat-resistant steel in the form of bars, wire, forgings,
mechanical tubing, flash welded rings, and stock for forging, flash welded rings, or heading.

Mechanical Properties

Property Min Value Max Value
N/mmsq 0.2% Yield Strength 586 0
N/mmsq Ultimate Tensile Strength 896 0
% Elongation 15 0
% Reduction of Area 20 0
Hardness Rockwell B (HRB) 0 0
Hardness Rockwell C (HRC) 0 0
Hardness Brinell (BHN) 248 341
Hardness Vickers (HV) 0 0

Chemical Elements

% Carbon (C) 0 0.08
% Chromium (Cr) 13.50 16.00
% Manganese (Mn) 0 2.00
% Molybdenum (Mo) 1.00 1.50
% Nickel (Ni) 24.00 27.00
% Phosphorus (P) 0 0.025
% Sulphur (S) 0 0.025
% Silicon (Si) 0 1.00
% Iron (Fe) 47.66 59.50
% Copper 0 0.50
% Magnesium 0 0
% Zinc 0 0
% Titanium 1.90 2.35
% Aluminium 0 0.35
% Cobalt (Co) 0 1.00
% Zirconium (Zr) 0 0
% Boron (B) 0.003 0.010
% Lead (Pb) 0 0
% Bismuth (Bi) 0 0
% Selenium (Se) 0 0