15-5PH Stainless Steel
15-5PH stainless steel is a precipitation hardening stainless steel that is known for its high strength, corrosion resistance, and good toughness and wear resistance. It is commonly used in a variety of applications, including aerospace, oil and gas, and petrochemical industries. The “15-5” in the name refers to the chemical composition of the steel, which consists of 15% chromium and 5% nickel. The “PH” stands for precipitation hardening, which refers to the heat treatment process used to strengthen the material. 15-5PH stainless steel is a versatile material that is widely used in a range of applications due to its good combination of properties.
HEAT TREATMENT OF 15-5PH STAINLESS STEEL
Heat treatment in the 900°F (482°C) range produces the highest strength, although it is slightly less than those of semi-austenitic alloys like S17700 or S15700. The latter precipitation hardening stainless steels generally require more steps to complete heat treatment. 15-5PH is generally better suited for plate applications than are the semiaustenitic alloys.
APPLICATIONS OF 15-5PH STAINLESS STEEL
FASTENERS
GEARS
STRUCTURAL PARTS
ENGINE COMPONENTS
DOWN HOLE
FASTENERS
15-5PH stainless steel is often used for fasteners in the aerospace industry due to its high strength and corrosion resistance.
GEARS
The high strength and good wear resistance of 15-5PH stainless steel make it a good choice for use in gears in the aerospace industry.
STRUCTURAL PARTS
15-5PH stainless steel is also used for structural parts in the aerospace industry, such as fuselage frames and wing components.
ENGINE COMPONENTS
15-5PH stainless steel is resistant to high temperatures and has good toughness, making it suitable for use in engine components such as turbine blades and exhaust systems.
DOWN HOLE
These are tools that are used in the drilling and exploration of oil and gas wells. 15-5PH stainless steel is often used to make these tools due to its high strength and corrosion resistance. and corrosive environments.
ROUND BAR
FLAT BAR
PLATE
SHEET
ROUND BAR
15-5PH Round Bar per AMS 5659 diameters range from 0.125″ to 14.00″ diameter.
FLAT BAR
15-5PH Flat Bar per AMS 5659 comes in a variety of thicknesses and widths. For more information please request a quote.
PLATE
15-5PH per AMS 5862 Plate Thickness ranges from 0.1875″ to 6.50″ Thick.
SHEET
15-5PH per AMS 5862 Sheet Thicknesses range from 0.002″ to .150″ Thick.
BARS & FORGINGS
15-5PH TECHNICAL INFORMATION
15-5PH stainless steel (S15500) is a variant of the older 17-4PH (S17400) chromium-nickel-copper precipitation hardening stainless steel.
Both alloys exhibit high strength and moderate corrosion resistance. High strength is maintained to approximately 600°F (316°C). This alloy is designated Grade or Type XM-12 in several specifications.
This Stainless Steel was designed to have greater toughness than 17-4PH, especially in the through-thickness (short transverse) direction. This improved toughness is achieved by reduced delta ferrite content and control of inclusion size and shape.
The composition and processing of 15-5PH is carefully controlled to minimize its content of delta ferrite, which is present in 17-4PH material. Inclusion control is done by consumable electrode remelting using the electro-slag remelting (ESR) process.
15-5PH is martensitic in structure in the annealed condition and is further strengthened by a relatively low temperature heat treatment, which precipitates a copper containing phase in the alloy. Like 17-4PH, 15-5PH Stainless requires only a simple heat treatment; a one-step process conducted at a temperature in the range 900°F (482°C) to 1150°F (621°C) depending on the combination of strength and toughness desired. A wide range of properties can be produced by this one-step heat treatment.