Alloy Steel 15/5 - widely used in the Aerospace industry

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Stainless Steel 15/5

Corrosion Resistant Stainless 15/5 – AMS5659 | AMS5862 | ASTM A-484 | BAC 5619 | BAC 5439 | AMS5826 | 1.4545 | ASNA 3294 - UNS S15500

Product description

Type 15-5 PH is a martensitic precipitation-hardening stainless steel that provides high strength, good corrosion resistance, good mechanical properties at temperatures up to 600°F (316°C) and good toughness in both the longitudinal and transverse directions in both base metal and welds. Short-time, low-temperature heat treatments minimize distortion and scaling. Type 15-5 PH is the ferrite-free version of Type 17-4 PH stainless steel.

15-5 PH Stainless Steel is used in applications that require high transverse strength and toughness such as engine parts, aircraft components, nuclear reactor components etc.

Strictly speaking, stainless doesn’t rust, but like all materials, there are some environments which are just too corrosive and it will be attacked. When stainless is attacked, the corrosion product looks just like the rust you get on carbon steel.

The 15-5 PH alloy is further strengthened by a relatively low temperature heat treatment which precipitates a copper containing phase in the alloy. 15-5 PH is also referred to as XM-12 in some specifications.

Technical Specification

Specification Material Publication Date
AMS5659 Steel, Corrosion-Resistant, Bars, Wire, Forgings, Rings, and Extrusions 15Cr - 4.5Ni - 0.30Cb (Nb) - 3.5Cu 01/09/1965
AMS5862 Steel, Corrosion-Resistant, Sheet, Strip, and Plate 15Cr - 4.5Ni - 0.30Cb (Nb) - 3.5Cu Consumable Electrode Remelted, Solution Heat Treated Precipitation-Hardenable 01/12/1973
AMS5826 Steel, Corrosion and Heat-Resistant, Welding Wire 15Cr - 5.1Ni - 0.30Cb(Nb) - 3.2Cu 01/01/1982

15-5 PH stainless steel offers excellent transverse notch toughness and ductility, and a very good uniformity of properties. It displays exceptional resistance to oxidation at high temperatures (up to 1,100°F/593°C). This material is chemically balanced to create an essentially ferrite-free microstructure, giving it a high degree of workability.

Technical Data

Mechanicals Chemistry
Specification - Solution AnnealedTensile StrengthYield StrengthElongation
H900190 ksi170 ksi10%
H925170 ksi155 ksi10%
H1025155 ksi145 ksi12%
H1075145 ksi125 ksi13%
H1100140 ksi115 ksi14%
H1150135 ksi105 ksi16%
ElementLower %Upper %
Carbon-0.070
Manganese-1.000
Silicon-1.000
Phosphorus-0.030
Sulfur-0.015
Chromium14.00015.00
Molybdenum-0.500
Columbium (Niobium)5xC0.450
Titanium--
Aluminium--
Cobalt--
Copper2.5004.500
Nickel3.5005.500

Aerocom Stock List

Sheet & Plate Bar
Sheet Size (Inches)
Thickness (Inches)60" x 36''
0.032X
0.040X
0.050X
0.063X
0.080X
0.100X
0.125X
0.160
0.190
0.250X
0.500X
0.750X
1.000X
1.500X
Stock
Diameter (Inches)AnnealedH1025H1150
0.125X
0.250XX
0.375X
0.438X
0.500XX
0.625XX
0.750XX
0.875X
1.000XXX
1.125X
1.250XXX
1.500XXX
1.750XXX
2.000XXX
2.500XX
3.000XX
3.500X
4.000XX
5.000X

Our Approvals

Leonardo Aerostructures Leonardo Aircraft Leonardo Helicopters Airbus Helicopters
UTC SAFRAN GE Power ISO9001:2015
AS9120B Westland SQA50 Britten-Norman

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