AISI 1042 steel is medium carbon steel with good weldability and machinability. This steel is used in many industries for various applications because of its good mechanical and physical properties. Let’s take a closer look at the composition, mechanical properties, physical properties, uses corrosion resistance, heat resistance, and heat treatment, machining, and welding of SAE 1042 steel.
SAE/AISI 1042 Composition
The composition of grade 1042 steel is as follows:
- Carbon: 0.48-0.53%
- Manganese: 0.60-0.90%
- Phosphorus: 0.04% max
- Sulfur: 0.05% max
- Silicon: 0.15-0.35%
- Chromium: 0.20% max
- Molybdenum: 0.10% max
- Iron: 97%.
| Element | Content (%) |
|---|---|
| Iron, Fe | 98.54-99.0 |
| Manganese, Mn | 0.600-0.900 |
| Carbon, C | 0.400-0.470 |
| Sulfur, S | 0.0500 |
| Phosphorous, P | 0.0400 |
SAE/AISI 1042 Mechanical Properties
- The mechanical properties of SAE / AISI 1042 steel are as follows:
- Tensile Strength (Ultimate): 620 MPa (89500 psi)
- Yield Strength (Samples): 415 MPa (60000 psi) min.
- Elongation (% in 2″): 16 min. 25 max.
- – Reduction of Area (%): 40 min 50 max
- Modulus of Elasticity (GPa): 190 – 210 GPa (28000 – 30500 ksi) –
- Poisson’s Ratio: 0.27 – 0.30;
- Annealed Condition; Machined to Final Dimensions;
- Ultimate Tensile Strength 89500 psi (620 MPa).
| Properties | Metric | Imperial |
|---|---|---|
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
SAE/AISI 1042 Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.844 g/cm3 | 0.2833 lb/in3 |
SAE/AISI 1042 Thermal Properties
| Properties | Conditions | ||
|---|---|---|---|
| T (ºC) | Treatment | ||
| Thermal conductivity | 51.9 W/mk | 0 | – |
SAE/AISI 1042 Equivalent
- ASTM A183
- ASTM A29
- ASTM A510
- ASTM A576
- ASTM A830
- SAE J1397
- SAE J403
- SAE J412
Heat Treatment
The heat treatment of alloy 1042 steel is as follows:
- Normalizing Temperature Range: 915 – 950 C (1670 – 1740 F)
- Annealing Temperature Range: 790 – 845 C (1450 – 1550 F)
- Quenching Medium: Water or Oil
Corrosion Resistance
The corrosion resistance of alloy 1042 carbon steel is poor when compared to other steels due to the presence of only trace amounts of chromium and molybdenum in its composition. However, it has good resistance to atmospheric corrosion and wears resistance thanks to its high carbon content.
Heat Resistance
The heat resistance of SAE / AISI 1042 steel is poor due to its low chromium and molybdenum content. However, it has good resistance to atmospheric corrosion and wears resistance thanks to its high carbon content.
Machining
The machinability of G10420 steel is fair when compared to other steels due to its high carbon content. However, it can be difficult to machine due to its hardening properties.
Welding
The weldability of SAE / AISI 1042 steel is fair when compared to other steels due to its high carbon content. However, it can be difficult to weld due to its hardening properties.
Uses
The most common uses for SAE / AISI 1042 steel are for bearings, gears, shafts, spindles, and other machinery parts and components that require good weldability and machinability but do not need high levels of strength or hardness.
Conclusion
In conclusion, SAE /A ISi10 42steel is a medium carbon steel with good weldability and machinability. It is used in many industries for various applications because of its good mechanical and physical properties. Its most common uses are for bearings, gears, shafts, spindles, and other machinery parts and components that require good weldability and machinability but do not need high levels of strength or hardness.
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