DescriptionStainless Steel 403 offers heat resistance and a scaling temperature of about 1300°F (704°C). This straight chromium stainless steel offers reasonable corrosion resistance and high mechanical characteristics.
EquivalentStainless steel grade 403 equivalent with:
AISI 403, AISI 614, ASTM A176, ASTM A276, ASTM A473, ASTM A314, ASTM A479, ASTM A511, ASTM A580, DIN 1.4000, QQ S763, AMS 5611, AMS 5612, FED QQ-S-763, MIL SPEC MIL-S-862, SAE 51403, SAE J405 (51403), etc
Chemical Composition Stainless 403
| Type | C | Si | Mn | Cr | S | P | |||
| 403 | 0.15 | 0.50 | 1.00 | 11.5-13.0 | 0.03 | 0.04 | |||
| AISI410 | 0.08-0.15 | 1.00 | 1.00 | 11.5-13.5 | 0.03 | 0.04 |
Mechanical Properties| Properties | 403 | |
| Tensile Strength (MPa) | 485 | |
| Yield Strength (MPa) | 310 | |
| Elongation (in 50mm) (%) | 25 | |
| Hardness (HB) | 139 | |
| Fatigue Strength (MPa) | 275 | |
| Supplied Condition | Annealed |
Physical Properties| Properties | 403 | |
| Density (×1000 kg/m3) | 7.80 | |
| Elastic Modulus (GPa) | 190-210 | |
| Thermal Conductivity (W/m-K) | 21.5 | |
| Poisson's ratio | 0.27-0.30 | |
| Specific Heat (J/kg-K) | 450 | |
| Thermal Expansion (µm/m-K) | 9.9 | |
| Ultimate Resilience (MJ/m3) | 77-93 |
Heat Treatment of Stainless 403
Anneal by heating to 1350° to 1450°F (732° to 78°C), then air cool
To enhance softness, hold at 1450° to 1550°F (788° to 843°C), then furnace cool
Annealing reduces machinability
Harden by quenching from 1750° to 1850°F (954° to 1010°C) in air or oil, then draw between 800° and 1100°F (427° and 593°C)
Machinability of Stainless 403
200-240 Brinell hardness or cold-drawn condition recommended
Use chip curler cutting tools when turning
Grind slight flat on cutting lip face when drilling
Highly concentrated sulfur oil
Turn: 40-80 sfpm
Mill: 35-70
Broach: 8-15
Ream: 20-60
Drill: 30-60
Workability of Stainless 403
May be cold worked
Easily drop or hammer forged
Preheat 2x as long as carbon steel
Preheat to 1400° to 1450°F (760° to 788°C), then rapid heat to 2050° to 2150°F (1121° to 1177°C)
Reheat once temperature drops to 1450° to 1600°F (788° to 871°C)
Bury in dry lime or ash to slow cool
ApplicationFurnace components
Ladles used in molten nonferrous applications, turbine parts, compressor blades, Stirring rods
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