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Stainless Steel Custom 455

Custom 455* stainless is a martensitic age-hardenable double vacuum-melted stainless steel. This alloy is known for being soft and formable in the annealed condition. However single-step aging treatments result in exceptionally high yield strength along with good ductility and toughness. The Custom 455* grade should be considered for applications that require simplicity of heat treatment, ease of fabrication, high strength and corrosion resistance are needed in combination. Typical applications are architectural, Food processing and handling, heat exchangers and conveyors.

Composition

Element min max
Carbon — 0.05
Manganese — 0.50
Silicon — 0.50
Phosphorus — 0.015
Sulfur — 0.015
Chromium 11.00 12.50
Nickel 7.50 9.50
Columbium 0.10 0.50
Titanium 0.80 1.40
Copper 1.50 2.50
Molybdenum — 0.50

Mechanical Properties (Solution Treated)

Minimum Tensile Properties, Inch/Pound Units

Tensile Yield Strength Elongation
Nominal Wall Thickness Strength at 0.2% Offset in 2 Inches or 4D
Inch ksi ksi %
Up to 0.020, excl 220 205 —
0.020 to 0.062, incl 220 205 4
Over 0.062 220 205 3