Specifications
- ASTM A453 Grade 660
- ASTM A638
- Werkstoffblatt: 1.4980
A286 is a super-austenitic alloy, the slim majority of its chemical content is iron. Its notable feature is its strength. Tensile values can range to over 210 KSI depending on the heat treat procedure. In addition, A286 is heat resistant and is used frequently in jet engines and in gas turbines.
Specifications & Technical Data
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| 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 |
| 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 |
| 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 |
| 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
| 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)
*Material tested was solution treated at 1800°F (982°C) and aged at 1325°F (718°C) for 16 hours.
| 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 |
*Samples tested were solution treated at 1800°F (982°C) and aged at 1325°F (718°C) for 16 hours.
| 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.
Typical Creep and Stress Rupture Strengths of A286 Aged at 1325°F (718°C)
