410 stainless steel is a corrosion and heat resistant 12% chromium steel. It is the most widely used of the hardenable stainless steels. Heat treated 410 stainless steel has mechanical properties comparable to the engineering alloy steel AISI 4130, coupled with the additional benefit of good corrosion resistance. 410 stainless steel is highly resistant to atmospheric corrosion. Maximum corrosion resistance is obtained by hardening and polishing.
Because 410 stainless steel is an air hardening steel, it must be given a high preheat, at least 350-400°F before welding, and immediately given a full anneal before the weldment cools. Otherwise the metal will harden, and cracking is likely. Matching composition filler metals are available, AWS E410 covered electrodes and ER410 bare filler wire. Alloy 82 (AWS ERNiCr-3) filler wire has also been used. This nickel alloy is comparatively low strength, and therefore accommodates some of the strain which may otherwise contribute to cracking in the 410 stainless steel weldment.
Heat uniformly to 1200-1400°F, remove from furnace and air cool. This should result in Brinell hardness about 187. For maximum softness, heat to 1500-1650°F, furnace cool slowly to 1100°F, after which air cooling is permissible. Brinell hardness should be approximately 155. Heat to 1750-1850°F, soak at heat, and quench in oil. Light sections will also harden by air cooling. 410 will harden to some degree when heated 1500°F and over unless slowly cooled to below the critical temperature. Soak at heat at least one hour, longer for large sections, and air cool. Tempering 410 in the range 750-1050°F results in decreased impact toughness and somewhat reduced corrosion resistance.
Chemistry
| Cr | Mn | Ni | C | Si | P | S | Fe | |
|---|---|---|---|---|---|---|---|---|
| MIN | 11.5 | – | – | 0.08 | – | – | – | – |
| MAX | 13.5 | 1.0 | 0.75 | 0.15 | 1.0 | 0.04 | 0.03 | Balance |
Specifications
AMS 5504
ASTM A 240
EN 1.4006
UNS S41000
Werkstoff 1.4006
Inventory
410 Stainless Steel Flanges, 410 Stainless Steel Pipe Fittings
Common Trade Names
410, 410 Stainless
Features
- Hardenable stainless steel which may be tempered as high as 1350°F to produce high impact toughness.
- Oxidation resistant through 1500°F intermittently, 1200°F continuously.
- Corrosion resistant.
Applications
- Stainless steel Flanges
- Petrochemical equipment
- Stainless steel valves
- Mining machinery
- Distillation trays
Physical Properties
Density: 0.276 lb/inch3
Melting Point: 2723°F
Modulus of Elasticity: 29 x 106
Electrical Resistivity: 343 ohm-circ mil/ft
| Temperature, °F | 212 | 932 | 1200 | 1450 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | 5.5 | 6.2 | 6.5 | 6.6 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F | 14.4 | 16.6 | – | – |
* 70°F to indicated temperature.
Mechanical Properties
Tensile Properties, Typical Annealed Condition
| Tensile Strength, ksi | 60 – 75 |
| 0.2% Yield Strength, ksi | 32 – 42 |
| Elongation, % | 20 – 40 |
| Reduction of Area, % | 50 – 75 |
Heat Treated Condition – 1″ Stainless Steel Round Bar (Oil Quenched from 1800°F)
| Tempering Temperature, °F | – | 300 | 500 | 700 | 1050 | 1150 | 1200 | 1300 | 1400 | 1500 |
| Tensile Strength, ksi | 193.5 | 188.5 | 181.6 | 181.4 | 124.1 | 117.5 | 113.0 | 101.8 | 96.5 | 131.8 |
| 0.2% Yield Strength | 149.8 | 148.6 | 143.6 | 144.7 | 110.3 | 103.7 | 99.1 | 84.2 | 77.9 | 88.6 |
| Elongation, % | 17.0 | 17.3 | 16.8 | 16.0 | 20.8 | 21.3 | 22.0 | 23.5 | 25.0 | 19.5 |
| Reduction of Area, % | 56.8 | 59.7 | 60.7 | 61.1 | 67.2 | 66.1 | 66.5 | 68.8 | 69.9 | 59.6 |
| Hardness, Brinell | 388 | 388 | 388 | 361 | 255 | 235 | 229 | 207 | 189 | 257 |
* Above data from wilsonpipeline Pipe Industry Co., Limited
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