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Credibility ,321 Stainless Steel is a standard austenitic 18/8 stainless steel grade, (304), but stabilized by Titanium. The titanium within means the stainless steel is intergranular corrosion resistant after heating, (between 425-900 degrees Celsius). Remarkably high strength as well as scaling resistance and phase stability set 321 Stainless Steel apart from other similar grades. This grade is not, however, recommended for welding consumable, as the titanium component does not allow good transfer of heat across a high temperature arc.
Cr | Ni | Mo | Cu | Ti | C | Mn | Si | P | S | N | Fe | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
MIN | 17.0 | 9.0 | - | - | 5x(C+N) | - | - | 0.25 | - | - | - | - |
MAX | 19.0 | 12.0 | 0.75 | 0.75 | 0.7 | 0.08 | 2.0 | 1.0 | 0.04 | 0.03 | 0.1 | Balance |
321 Stainless Steel Bars, 321 Stainless Steel Angle Bars, 321 Stainless Steel Flanges, 321 Stainless Steel Tubes & 321 Stainless Steel Pipe Fittings
Density: 0.286 lb/inch3
Melting Point: 2550 - 2600°F
Temperature, °F | 200 | 400 | 800 | 1000 | 1200 | 1400 | 1600 |
Coefficient* of Thermal Expansion, in/in°F x 10-6 | 9.3 | 9.4 | 10.0 | 10.3 | 10.6 | 10.9 | 11.1 |
Thermal Conductivity Btu • ft/ft2 • hr • °F |
8.8 | 9.7 | 11.4 | 12.1 | - | - | - |
Modulus of Elasticity, Dynamic psi x 106 | 28.0 | 26.5 | 23.8 | 22.5 | 21.2 | 19.7 | - |
Average Elevated Temperature Tensile Properties
Temperature, °F | 68 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
Ultimate Tensile Strength, ksi | 84 | 62 | 62 | 62 | 59.5 | 45.5 | 27.5 |
0.2% Yield Strength, ksi | 38 | 20.5 | 18 | 17 | 16.5 | 16 | 14 |
Average Stress for Rupture
Temperature, °F | 1050 | 1100 | 1150 | 1200 | 1250 | 1300 | 1350 | 1400 | 1450 | 1500 |
1,000 hours, ksi | - | 30 | - | 19 | - | 11.2 | - | 6.8 | - | 4.0 |
10,000 hours, ksi | 31 | 23.5 | 17.3 | 12.9 | 9.7 | 7.2 | 5.4 | 4.0 | 3.05 | 2.3 |
100,000 hours, ksi | 23 | 16.5 | 12 | 8.7 | 6.3 | 4.6 | 3.3 | 2.45 | 1.75 | 1.27 |
Average Stress for Secondary (minimum) Creep Rate
Temperature, °F | 1050 | 1100 | 1150 | 1200 | 1250 | 1300 | 1350 | 1400 | 1450 | 1500 |
1% in 1,000 hours, ksi | 30 | 20 | 13.1 | 8.8 | 5.8 | 3.85 | 2.55 | 1.7 | 1.13 | 0.75 |
1% 100,000 hours, ksi | 13.6 | 9.2 | 5.9 | 3.9 | 2.55 | 1.7 | 1.1 | 0.74 | 0.48 | 0.32 |
Electrical Resistivity
Temperature, °F | 68 | 212 | 392 | 752 | 1112 | 1472 | 1652 |
ohm circ mil/ft | 430 | 470 | 515 | 600 | 670 | 725 | 760 |
Source: Yaang Pipe Industry (www.yaang.com)
Tel No:+86-18267732328 / Email:[email protected]
Address:Longwan District, Wenzhou, Zhejiang Province, China.
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