High-machinability Stainless Steel 416 Flat Bars are manufactured by Chung Metal, characterized by superior free-machining properties and moderate corrosion resistance. SS 416 is a martensitic stainless steel that is usually utilized in automatic machining and general engineering when rapid fabrication is a priority. Flat bar design is ideal for machined components, mechanical mounts, and structural bases for high-speed applications. Chung Metal provides SS 416 flat bars with precise dimensions, even finish, and thickness consistency. These bars are suitable for producers who need good strength, high productivity, and easy processing.
SS 416 contains 12–14% chromium, 0.15% carbon, and added sulfur for better machinability. Tensile strength is 550–750 MPa, yield strength 275–400 MPa, and hardness up to 30 HRC. It is magnetic and can be temper-drawn and heat-treated. The flat profile is advantageous for high-speed machining and safe structural applications. SS 416 possesses moderate corrosion resistance in dry or mild conditions. Chung Metal offers these bars in sizes optimized for precision, speed, and structural applications.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 416 | 0.15 | 14.0 – 12.0 | 1.25 | – | 0.06 | 0.15 | 1 |
| Element | Density, lb/in3 | Melting Point | Electrical Resistivity |
| SS 416 | 0.282 lbs/in3 7 .80 g/cm3 | 2700 – 2790 °F (1488 – 1530 °C) | At 70 °F (21 °C): 343.0 |
| Flat Bar | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.49 | 1.60 |
| 18 | 0.62 | 2.02 |
| 20 | 0.76 | 2.49 |
| 22 | 0.92 | 3.02 |
| 25 | 1.19 | 3.90 |
| 28 | 1.49 | 4.89 |
| 28 | 1.49 | 4.89 |
| 30 | 1.71 | 5.61 |
| 32 | 1.95 | 6.38 |
| 36 | 2.46 | 8.08 |
| 38 | 2.74 | 9.00 |
| 40 | 3.04 | 9.97 |
| 45 | 3.85 | 12.62 |
| 50 | 4.75 | 12.62 |
| 56 | 8.96 | 19.55 |
| 60 | 6.84 | 22.44 |
| 65 | 8.03 | 26.34 |
| 70 | 9.31 | 30.54 |
| 75 | 10.69 | 35.06 |
| 80 | 12.16 | 39.89 |
| 90 | 15.39 | 50.49 |
| 100 | 19 | 62.34 |
Stainless Steel 416 Flat Bar is commonly used in applications requiring moderate corrosion resistance, high strength, and machinability. It's used in shafts, valves, pumps, fasteners, and machinery components, particularly in the automotive, aerospace, and manufacturing industries.
The typical hardness level of Stainless Steel 416 Flat Bar ranges from 30 to 40 HRC (Rockwell Hardness Scale). The hardness can vary depending on the heat treatment process, with higher hardness achieved through quenching and tempering.
Common methods for machining Stainless Steel 416 Flat Bar include turning, milling, drilling, and grinding. Due to its high machinability, it can be easily processed using conventional tools, though cutting speeds and coolant usage should be optimized to reduce heat buildup.
416 flat bars are utilized in parts of automated machining, shafts, bushings, pump parts, valve components, and hydraulic systems. Their free-machining characteristic makes them ideal for use with CNC turning, screw machines, and production runs. The flat configuration enables application in guideways, tool supports, structural plates, and precision fixtures. SS 416 is preferred in appliance, machine tool, and low-corrosion mechanical assemblies. Chung Metal offers SS 416 flat bars in lengths and surface finishes that meet the speed, accuracy, and hardness demands of contemporary machining businesses.






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