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Medical416 Heat Treated Condition T (Intermediate Temper) has been baked to meet a Rockwell C hardness minimum of 25 and maximum of 32. This material is a martensitic, free-machining, chromium steel alloy that is generally considered to be the first free-machining stainless steel. Fry Steel orders this grade as Type 2 Sulfur (12.5Cr - 0.28S). It has the highest machinability of any stainless steel at about 85% of that of a free-machining carbon steel. This material provides moderate corrosion resistance with high strength in tempered and hardened conditions. 416 stainless steels are not ideal for sulfuric chemical environments such as oceanic settings. This material has typically been used for parts requiring hardness up to 35 HRC on which the amount of machining warrants use of a free-machining grade of steel with oxidation resistance up to 1000 F (538 C). The product is useful at the higher temperatures only when stresses are low. Commonly heat-treated at ~1400F. This grade can be treated to achieve different mechanical properties. The ability to heat treat the grade allows it to be viable in many applications. Our 416 stainless steel can come in two conditions, Condition A (Annealed) and Condition T (Intermediate Temper). Grade 416 is often used for Pump Shafts, Bolts, Valves, Gears, Fasteners, Studs and Motor Shafts. (UNS S41600)
Chemical Makeup
| Element | Min | Max |
|---|---|---|
| Carbon, C | - | 0.15 |
| Manganese, Mn | - | 2.5 |
| Silicon, Si | - | 1 |
| Sulfur, S | 0.15 | 0.4 |
| Phosphorus, P | – | 0.06 |
| Chromium, Cr | 11.5 | 13.5 |
| Nickel, Ni | - | 0.75 |
| Copper, Cu | - | 0.5 |
| Molybdenum, Mo | - | 0.6 |
Common Applications
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Aerospace
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Industrial
Benefits
- High Strength
- High Hardness
- Oxidation Resistance
- Moderate Corrosion Resistance