Views: 0 Author: Site Editor Publish Time: 2025-07-16 Origin: Site
A286 stainless steel is an iron-based austenitic precipitation hardening alloy, adding molybdenum (Mo), titanium (Ti), aluminum (Al), vanadium (V) and trace boron (B) comprehensive strengthening. Below 650 ℃ has a high yield strength and lasting, creep strength, and has a good processing plasticity and satisfactory welding performance. It is suitable for the manufacture of aero-engine high-temperature load-bearing components for long-term operation below 650°C, such as turbine disks, press disks, rotor blades and fasteners. The alloy can produce deformed products of various shapes such as disks, forgings, plates, bars, wires and rings.
A286 is a nickel-based stainless steel alloy favored for its high corrosion resistance, durability at varying temperatures, and high strength. This alloy is widely used in the manufacturing industry, especially in the fabrication of components at high temperatures and in corrosive environments, such as the oil and gas industry, jet engine production, and turbine component manufacturing.
Incoloy A286 typically meets the following standards:
ASTM A453/A453M: High temperature fastener materials.
ASTM A638/A638M: High temperature fastener materials.
AMS 5731, AMS 5732, AMS 5734, AMS 5737: Specific specifications for aerospace applications.
UNS S66286: Uniform Numbering System grade.
DIN 1.4980: European standard grade.
Good strength at high temperature: it can still maintain good mechanical properties under the condition of up to 650~700℃.
Good corrosion resistance: It shows good corrosion resistance in oxidizing and some slight corrosive environments.
Excellent workability and weldability: suitable for various forming and welding processes.
Heat-treatable reinforcement: high strength is obtained by aging treatment.
Element | Min (%) | Max (%) |
Carbon, C | – | 0.08 |
Manganese, Mn | 8 | 2 |
Silicon, Si | – | 1 |
Sulfur, S | – | 0.025 |
Phosphorus, P | – | 0.025 |
Chromium, Cr | 13.5 | 16 |
Titanium, Ti | 1.9 | 2.35 |
Nickel, Ni | 24 | 27 |
Molybdenum, Mo | 1 | 1.5 |
Vanadium, V | 0.1 | 0.5 |
Aluminum, Al | – | 0.35 |
Boron, B | 0.003 | 0.01 |
Iron, Fe | – | *Balance |
Properties | Metric | Imperial |
Density | 7.92 g/cm3 | 0.286 lb/in3 |
Melting point | 1399°C | 2550°F |
Alloy A286 stainless steel has high strength, after solution treatment yield strength up to 275MPa, tensile strength up to 620MPa, after aging treatment, tensile strength can be as high as 1035MPa, yield strength up to 759MPa, and has good toughness and fatigue resistance.
Properties | Metric | Imperial |
Tensile strength | 1035 MPa | 150100 psi |
Yield strength (@strain 0.200%) | 759 MPa | 110000 psi |
Elongation at break | 25% | 25% |
Reduction of area | 40% | 40% |
Hardness, Brinell (estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball) | 304 | 304 |
Hardness, Knoop (estimated from Rockwell C value) | 330 | 330 |
Hardness, Rockwell C | 32 | 32 |
Hardness, Vickers (estimated from Rockwell C value) | 318 | 318 |
A286 Stainless Steel has chromium, nickel and molybdenum content similar to that of austenitic stainless steels, and offers considerable corrosion resistance in aqueous environments. It has good resistance to a wide range of organic and inorganic compounds and is highly resistant to chloride ion stress corrosion cracking. It also exhibits good corrosion resistance in oxidizing media. However, its corrosion resistance in reducing media is slightly weaker compared to pure austenitic stainless steels, but it can still meet the needs of most industrial scenarios through proper use and protection.
In terms of machinability, A286 stainless steel has a certain degree of machinability. It can be subjected to conventional machining such as turning, milling, drilling, etc. However, due to its high strength, sharp tools and appropriate cutting parameters are required in the machining process to reduce the difficulty of machining and to avoid excessive tool wear. At the same time, it has good plasticity and is capable of plastic processing such as bending and stamping, but attention needs to be paid to controlling the processing temperature and the amount of deformation in order to prevent defects such as cracks.
For welding performance, A286 stainless steel can be welded by conventional welding methods such as electric arc welding and argon arc welding. The welding area should be kept clean. Post-weld heat treatment or preheating is not recommended for this alloy. Solid solution annealing treatment can obtain better welding results. When welding, it is necessary to choose the appropriate welding material, usually choose the wire or electrode with similar composition to the base material to ensure the performance of the welded joint. During the welding process, attention should be paid to controlling the welding temperature and welding speed to avoid overheating resulting in coarse grain size, which affects the strength and toughness of the joint. Appropriate heat treatment after welding can further improve the performance of welded joints.
AMS 5525 (Plate, Sheet, and Strip)
AMS 5726 (Bar and Wire)
AMS 5731 (Bar, Custom Tube, Forging, Ring, Tubing, and Wire)
AMS 5732 (Bar, Custom Tube, Forging, Ring, Tubing, and Wire)
AMS 5734 (Bar, Custom Tube, Forging, Tubing, Wire)
AMS 5735 (Bar, Forging, Ring, Tubing)
AMS 5736 (Bar, Forging, Ring, Tubing)
AMS 5737 (Bar, Custom Tube, Forging, Tubing, Wire)
AMS 5805 (Wire)
AMS 5853 (Bar and Wire)
AMS 5858 (Plate, Sheet, and Strip)
AMS 5895 (Bar, Custom Tube, Forging, Ring, Tubing, and Wire)
Aerospace
Gas turbines
Low temperature applications
Oil and gas industry
Automotive industry
Nuclear
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