Type 416 is a free machining high hardenability martensitic stainless steel with excellent machinability, reasonable strength and corrosion resistance. This grade is characterized by excellent machinability, non-galling and non-seizing properties due to its higher sulfur content which has the effect of lowering its corrosion resistance. It is however resistant to mild corrosive atmospheres, fresh water, steam, organic materials, many mild acids and petroleum products in the hardened and tempered condition. Type 416 stainless steel is magnetic in all conditions and has been used for shafts, axles, gears and pinions, lead screws, golf club heads, valve trim, bolts and nuts, and any part requiring considerable machining.
In addition to its machinability, Type 416 stainless steel offers a practical balance of strength, hardness, and ease of production, making it well-suited for high-volume machining applications. Its sulfur content improves chip breaking and reduces tool wear, allowing for faster machining speeds and improved efficiency compared to other stainless grades. While its corrosion resistance is lower than austenitic grades like 304 and 316, it performs reliably in mildly corrosive environments where machinability and cost effectiveness are primary considerations. Type 416 is commonly selected for components requiring tight tolerances, repeatability, and consistent performance, particularly in parts that benefit from its ability to be hardened and tempered.
Stainless Type 416 Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A582*
| Carbon | 0.15 | Silicon | 1.00 |
| Chromium | 12.0-14.0 | Phosphorus | 0.06 |
| Manganese | 1.25 | Sulfur | 0.15 min |
*Maximum, unless range is indicated
Stainless Type 416 Physical Properties
| Density, lb/in3 | 0.276 |
| Modulus of Elasticity, psi | 29 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 6.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 14.4 |
| Specific Heat, Btu/lb ˚F | 0.11 |
| Electrical Resistivity, Microhm-in | 22.4 |
Stainless Type 416 Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A582.
| Brinell Hardness, max. | 262 max |
Stainless Type 416 Standards
Typical standards for Type 416
| ASTM A582 |
Your Source for Stainless Type 416
At Double Eagle Alloys, we supply Stainless Type 416 in long bar, flanges, pipe, sheet, gaskets, fittings and header plugs engineered for these demanding services. Contact our team to learn how Stainless Type 416 can support long-term performance and reliability.
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Data shown are typical and provided for informational purposes only. Values should not be considered minimums or maximums for specification or final design. Actual product data may vary, and information may be revised without notice.