Alloy 410S (UNS S41008) is a low carbon, non–hardening modification of Alloy 410 (UNS S41000) the general purpose 12% chromium martensitic stainless steel. The low carbon and a small alloy addition minimize austenite formation at high temperatures which restricts the alloys ability to harden. 410S remains soft and ductile even when rapidly cooled from above the critical temperature. This non-hardening characteristic helps prevent cracking when the alloy is exposed to high temperatures or welded. 410S is completely ferritic in the annealed condition. It exhibits adequate corrosion resistance similar to 410 and good oxidation resistance.
Max Length: 24 meters
1. Heat Exchangers
2. Pressure Vessels
3. Chemical & Petrochemical
4. Marine Equipments
5. Gas Industry
6. Food Processing
7. Nuclear Power Generation
8. Automotive
9. Aerospace
Corrosion Resistance
The corrosion resistance of Sandmeyer Steel 410S stainless steel is similar to type 410. It resists corrosion in atmospheric conditions, fresh water, mild organic and mineral acids, alkalis and some chemicals. It’s exposure to chlorides in everyday activities (e.g., food preparation, sports activities, etc.) is generally satisfactory when proper cleaning is performed after exposure to use.
General Corrosion Behavior Compared With Other Nonaustenitic Stainless Steels*
5% Test
Solution at 120°F
(49°C) |
Corrosion Rate in Mils per Year and Millimeters per Year (mm/a) |
| Alloy 409 |
Alloy 410S |
Alloy 420 |
Alloy 425 Mod |
Alloy 440A |
Alloy 430 |
| Acetic Acid |
0.88
(0.022) |
0.079
(0.002) |
1.11
(0.028) |
4.79
(0.122) |
2.31
(0.0586) |
0.025
(0.0006) |
| Phosphoric Acid |
0.59
(0.002) |
0.062
(0.002) |
0.068
(0.002) |
0.593
(0.015) |
0.350
(0.009) |
0.029
(0.001) |
*Hardened martensitic grades were tested after tempering at 400°F (204°C)
As shown in the above table, 410S has good corrosion resistance to low concentratiions of mild organic and mineral acids.
Oxidation Resistance
The oxidation resistance of 410S stainless steel is good. It can be used in continuous service up to 1300°F (705°C). Scaling becomes excessive above 1500°F (811°C) in intermittent service.
Formability
410S stainless steel can be easily formed by spinning, bending and roll forming.
Chemical Analysis
The austenitic stainless steels are considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes.
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| Chromium |
11.5 min.-14.5 max. |
Sulfer |
.030 max. |
| Nickel |
0.60 max. |
Silicon |
1.00 max. |
| Carbon |
0.08 max. |
Iron |
Balance* |
| Manganese |
1.00 max. |
Phosphorus |
0.040 max.
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