SAE 1146 steel is a medium carbon, high manganese steel. It is also known as 1117 carbon steel. This grade can be heat treated for extra strength and toughness. Welding, machining, and corrosion resistance are all good. This material is easily worked hot or cold. Heat treatment brings out the best properties in this grade. Let’s take a closer look at what this steel is and how it can be used.
AISI 1146 Composition
The composition of UNS G11460 steel is as follows:
- Carbon – 0.47 to 0.53%
- Manganese – 1.10 to 1.40%
- Silicon – 0.17 to 0.37%
- Phosphorus – 0.04% max
- Sulfur – 0.04% max
- Chromium – 0.80 to 1.10%
- Nickel – 0.30% max
- Molybdenum – 0.12 to 0.22%
| Element | Content (%) |
|---|---|
| Iron, Fe | 98.34 – 98.88 |
| Manganese, Mn | 0.700 – 1.00 |
| Carbon, C | 0.420 – 0.490 |
| Sulfur, S | 0.130 |
| Phosphorous, P | 0.0400 |
AISI 1146 Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.7-8.03 g/cm3 | 0.278-0.290 lb/in3 |
AISI 1146 Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
AISI 1146 Equivalent
- ASTM A29
- ASTM A510
- ASTM A576
- SAE J1397
- SAE J403
- SAE J412
AISI 1146 Uses
Here are some potential uses for UNS G11460 steel:
- Automotive parts
- Gears
- Shafts
- Bearings
- Machinery parts
- Welding wire
- Welding
This material can be heat treated for extra strength and toughness. The weldability is good with standard methods such as gas metal arc welding (GMAW), shielded metal arc welding (SMAW), and flux cored arc welding (FCAW). Preheat and post-heat treatments may be required depending on the application and desired results.
Corrosion Resistance
AISI 1146 is a high-carbon steel material that has excellent corrosion resistance. Its applications range widely, from automotive parts to knife blades and other precision instruments. The reason for its excellent resistance to corrosion lies in its composition of materials: high levels of chromium plus moderate quantities of nickel and molybdenum, which give it the ability to withstand external contaminants such as water, air, and dust. In addition to maintaining pristine conditions even in harsh environments, SAE/AISI 1146 also offers heat-treatable properties, which allow manufacturers to reduce costs by producing larger batches at lower temperatures and use materials that are exceptionally comfortable to work with. Its superior corrosion resistance allows its users to trust they’re receiving quality performance every time.
Heat Resistance
SAE 1146 steel is a great choice for working with elevated temperatures because it has amazing heat resistance. In fact, this particular grade of steel has a maximum operating temperature of 800 degrees Celsius which is impressive considering many metals start to lose their structural integrity at lower temperatures. This steel alloy also has excellent plasticity and strength, making welding, machining, and hot working easier when creating components designed to endure above-average operating temperatures.
Machining
Grade 1146 machining is a sophisticated process requiring special expertise to ensure proper cutting in order to achieve the desired results. The alloy 1146 machining process often comprises operations like centering, drilling, sawing, milling, and turning, thereby making it a complex operation but yielding an excellent surface finish. With the right skill set and tooling solutions, experienced machinists can work with SAE/AISI 1146 to create products with tight tolerances that meet exact specifications.
Conclusion
In conclusion, SAE / AISI 1146 is a medium carbon, high manganese steel that can be heat treated for extra strength and toughness. It has good weldability, machinability, and corrosion resistance. This material is easily worked hot or cold and is widely used in automotive applications such as gears, shafts, bearings, and machinery parts, as well as in welding wire form.
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