a bunch of metal rings are stacked on top of each other

Alloy A286

Alloy A286

Nickel (Ni) - 25.5 Median
(24.0 Min - 27.0 Max)
Chromium (Cr) - 14.75 Median
(13.5 Min - 16.0 Max)
Molybdenum (Mo) - 1.25 Median
(1.0 Min - 1.5 Max)
Iron (Fe) - 51.6135 Balance
Manganese (Mn) - 2.0 Max
Cobalt (Co) - 1.0 Max
Silicon (Si) - 1.0 Max
Titanium (Ti) - 2.125 Median
(1.9 Min - 2.35 Max)
Other

Key

Nickel
Copper
Chromium
Aluminum
Molybdenum
Iron
Titanium
Manganese
Cobalt
Other
  • Nickel (Ni) 25.5 Median
    (24.0 Min - 27.0 Max)
  • Chromium (Cr) 14.75 Median
    (13.5 Min - 16.0 Max)
  • Aluminum Al 0.35 Max
  • Molybdenum (Mo) 1.25 Median
    (1.0 Min - 1.5 Max)
  • Iron (Fe) 51.6135 Balance
  • Manganese (Mn) 2.0 Max
  • Cobalt (Co) 1.0 Max
  • Carbon (C) 0.08 Max
  • Silicon (Si) 1.0 Max
  • Titanium (Ti) 2.125
  • Vanadium (Va) 0.30 Median
    (0.1 Min - 0.5 Max)
  • Phosphorus (P) 0.025 Max
  • Boron (B) 0.0065 Median
    (0.003 Min - 0.01 Max)

UNS S66286

When your projects demand unmatched strength and superior performance at extreme temperatures, A286 stainless steel is the alloy you can rely on. As an industry leader in A286 stainless steel solutions, Nickel Systems offers a comprehensive range of premium A286 fasteners and components tailored to the rigorous standards of various industrial manufacturing sectors. Leverage our expertise and extensive inventory to source the highest quality A286 fasteners, ensuring your applications perform reliably under harsh conditions.

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Summary

  • Environment:
    Oxidation Resistant
  • Temperature Limit:
    1300 °F / 704 °C
  • Ultimate Tensile (Typical):
    90 ksi / 620 mpa

Alloy A286 Specifications & Technical Data

If your question isn’t answered below, download the technical data sheet here. The mechanical and physical properties of A286 make it a standout material for industrial use:

Specifications

  • ASTM A453 Grade 660
  • ASTM A638
  • Werkstoffblatt: 1.4980

Physical Properties

Typical Values for A286 at Room Temperature
Density
Solution Treated 0.286 lb./in3 7.92 g/cm3
Solution Treated and Aged 0.287 lb./in3 7.94 g/cm3
Specific Gravity
Specific Treated 7.92
Solution Treated and Aged 7.94
Melting Range 2500-2600°F 1370-1430°C
Magnetic Permeability
Solution Treated 1.010
Solution Treated and Aged 1.007
Specific Heat 0.10 Btu/lb-°F 420 Joules/kg-°K

 

Linear Coefficient of Thermal Expansion Tests Conducted on Solution Treated and Aged Material

Temperature Range Coefficient of Thermal Expansion (units of 10-6)
°F °C /°F  /°C 
70-200 21-93 9.17 16.5
70-400 21-204 9.35 16.8
70-600 21-316 9.47 17.0
70-800 21-427 9.64 17.4
70-1000 21-538 9.78 17.6
70-1200 21-649 9.88 17.8
70-1400 21-760 10.32 18.6

 

Thermal Conductivity
Temperature Thermal Conductivity
°F  °C Btu-ft/ft2-h-°F W/m•K
302 150 8.7 15.1
572 300 10.3 17.8
932 500 12.6 21.8
1112 600 13.8 23.9

 

Electrical Resistivity
Temperature Electrical Resistivity
microhm-cm
°F  °C
77 25 91.0
1004 540 115.6
1202 650 118.8
1346 730 120.1
1499 815 122.4

 

Elastic Modulus, Modulus of Rigidity and Poisson’s Ratio
Temperature Modulus of Elasticity*
(Modulus of Ridigity)
Poisson’s Ratio
°F °C  106 psi GPa (μ)
-320 -196 29.6 (11.6) 204 (80) 0.280
-100 -73 29.4 (11.4) 203 (79) 0.290
75 24 29.1 (11.2) 201 (77) 0.300
1000 538 23.5 (8.8) 162 (61) 0.330
1100 593 22.9 (8.6) 158 (59) 0.335
1200 649 22.2 (8.3) 153 (57) 0.340
1300 704 21.6 (8.0) 149 (55) 0.345
1400 760 20.6 (7.6) 142 (53) 0.350
1500 816 19.8 (7.3) 137 (50) 0.355
1600 871 18.9 (7.0) 130 (48) 0.360

*Dynamic

Mechanical Properties

Typical Short Time Tensile Properties as a Function of Temperature*
Yield Strength  Ultimate Tensile Strength Elongation
40,000 psi 90,000 psi 40%
(275 MPa) (620 MPa)

*Material solution treated at 1800°F (982°C)

A286 Typical Short Time Tensile Properties as a Function of Temperature

*Material tested was solution treated at 1800°F (982°C) and aged at 1325°F (718°C) for 16 hours.

Charpy V-Notch Impact Properties
Testing Temperature Charpy V-Notch Impact Energy
°F °C Ft-lbs Joules
-320 -196 57 77
-100 -73 68 92
80 27 64 87
410 210 60 81
810 432 52 70
1010 543 46 62
1113 600 44 60
1250 677 41 56
1450 788 52 71

 

Hardness vs Aging Temperature for A286 Sheet

*Samples tested were solution treated at 1800°F (982°C) and aged at 1325°F (718°C) for 16 hours.

Oxidation and Corrosion Resistance

Test Environment Typical Performance
Type 304 Type 316 Alloy A286
5% Neutral Salt Spray No Rusting
100 Hours
No Rusting
100 Hours
No Rusting
100 Hours
U-Bend Test in 42% Magnesium Chloride Cracks
8 Hours
Cracks
24 Hours
Cracks
168 Hours
Crevice Corrosion Test in 10% Ferric Chloride (pH 1.5) at 70 F (21 C) Attacked Attacked Attacked

 

Test Environment
Boiling Solution
in mils Per Year (mm/a)
Type 304 Type 316 Alloy A286*
20% Acetic Acid <0.1
(<0.01)
<0.1
(<0.01)
<0.1
(<0.01)
45% Formic Acid 48.2
(1.22)
10.9
(0.28)
8.3
(0.21)
10% Oxalic Acid 48.5
(1.23)
40.1
(1.02)
14.4
(0.37)
1% Hydrochloric Acid 107
(2.72)
226
(5.74)
84.1
(2.14)
10% Sulfuric Acid >500
(>12)
636
(5.74)
29.5
(0.75)
20% Phosphoric Acid 0.2
(<0.01)
0.2
(<0.01)
12.8
(0.33)
10% Sodium Bisulfate 63.6
(1.62)
41.6
(1.06)
7.2
(0.18)

*Tested in the solution-treated condition.

Creep and Stress Rupture Properties

Typical Creep and Stress Rupture Strengths of A286 Aged at 1325°F (718°C)

Typical Creep and Stress Rupture Strengths of A286 Aged at 1325°F (718°C)

Formability

Work Hardening of Solution Treated A286 Sheet

Work Hardening of Solution Treated A286 Sheet

What Is A286?

A286 is an age-hardenable iron-based super-austenitic alloy enriched with nickel (25.00%), chromium (14.50%), molybdenum (1.25%) and titanium (2.10%). This unique composition grants the alloy high tensile strength and the ability to maintain its mechanical properties at elevated temperatures of up to 1,300°F (704°C).

In industrial applications, A286 material is indispensable for components that must endure extreme temperatures while maintaining robust performance. Its remarkable strength and oxidation resistance make it a preferred choice in aerospace, gas turbines and other sectors where reliability is paramount.

 

Advantages of A286

A286 provides several key benefits that enhance performance and cost-efficiency in industrial projects, contributing to its widespread adoption:

  • Exceptional strength and ductility: Its ultimate tensile strength exceeds 90 ksi, offering remarkable toughness even in notched sections.
  • High heat resistance: This alloy maintains structural integrity and mechanical properties at elevated temperatures, which is ideal for components exposed to intense heat.
  • Cost-effective option: A286 material offers high performance without the premium cost of more exotic alloys, making it a budget-friendly choice for high-strength requirements.
  • Versatile applications: A286 adapts seamlessly to different industrial needs, from jet engines to high-temperature fasteners.
  • Elevated oxidation resistance: Compared to other high-grade stainless steels, A286 stainless steel performs well against oxidation up to 1800°F (982°C).
  • Low-temperature performance: A286 retains ductility and toughness even at cryogenic temperatures, making it useful for non-magnetic cryogenic equipment.
  • High yield strength: The notable A286 yield strength allows the alloy to withstand significant stress and strain, making it suitable for high-pressure environments.
  • Superior machinability: Due to its ductility, A286 can be machined and formed using standard techniques, offering flexibility in manufacturing processes.

Applications of A286

A286 is utilized across various industries due to its robust properties:

  • Aerospace: A286 is integral in jet engine components, turbine blades and afterburner parts where high-temperature strength is essential.
  • Gas turbines: Essential for turbine components, A286 stainless steel withstands high temperatures and mechanical stresses.
  • Oil and gas: It performs in offshore applications, such as piping systems exposed to harsh conditions.
  • Automotive: Employed in superchargers and exhaust systems requiring materials that withstand high stress and temperatures.
  • Industrial equipment: This material is fundamental in heat exchangers, pumps and fasteners in high-stress settings.
  • Cryogenic equipment: Its non-magnetic properties make A286 material ideal for cryogenic applications, maintaining strength and integrity at extremely low temperatures.

 

Types of A286 Fasteners Available

Nickel Systems offers an extensive range of A286 fasteners tailored to meet your specific needs:

Choosing the Right Fasteners

The appropriate A286 fastener is pivotal for achieving optimal performance in various applications. Some factors to consider include:

  • Application conditions: Evaluate factors such as environmental conditions, load and operating temperatures before selecting a fastener material.
  • Material compatibility: Match A286 bolts with compatible materials to prevent galvanic corrosion and ensure longevity.

Making the optimal choice can be complex, so consulting with experts is crucial. Our team at Nickel Systems is ready to assist you in selecting the appropriate fasteners tailored to your requirements.

 

Check out our A286 Product Samples

Hex Head Bolt A286 Grade 660A with a glass bead coating

a glass beaded hex head bolt

 

12-Point Flange Screw A286 Grade 660A

 

a picture of a 12-point flange screw A286 Material Grade 660A

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Three Blue Hexagons Are Lined Up On A White Background Three Blue Hexagons Are Lined Up On A White Background

Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.

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Contact the Experts at Nickel Systems

Nickel Systems is your trusted partner for high-quality A286 stainless steel fasteners, committed to excellence and customer satisfaction. Our extensive inventory features a wide range of A286 bolts and other fasteners, guaranteeing top-notch products for your applications. Leverage our free expert advice to guide you to the ideal A286 products. Contact Nickel Systems today for a free consultation and request a quote online.

 

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