SAE 1020 STEEL SHEET
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Carbon steel is a category of steel, which contains 0.12 to 2% carbon. This grade of steel gains hardness and strength with heat treatment when the percentage of carbon increases but the ductility is reduced.
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SAE 1020 carbon steel is a commonly used common carbon steel. It has a good combination of strength and ductility and can be hardened or case hardened.
The following sections have details on SAE 1020 carbon steel.
CHEMICAL COMPOSITION SAE 1020
| element | Content (%) |
| Manganese, Mn | 0.30-0.60 |
| carbon, C | 0.18-0.23 |
| sulfur, S | 0.05 (max) |
| Phosphorus, P | 0.04 (max) |
| iron, iron | balance |
PHYSICAL PROPERTIES SAE 1020
| properties | Metric | voltage |
| density | 7.87 g / cm 3 | 0.284 lb/in 3 |
MECHANICAL PROPERTIES SAE 1020
| properties |
Metric |
voltage |
| tensile strength | 420 MPa | 60900 psi |
| yield strength | 350 MPa | 50800 psi |
| modulus of elasticity | GPa 205 | 29700 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Poisson's coefficient | 0.29 | 0.29 |
| Stretching in the interval (in 50 mm) | 15% | 15% |
| hardness | 121 | 121 |
SAE 1020 DESIGNATIONS
Other designations that are equivalent to SAE 1020 carbon steel include the following specifications.
| AMS 5054 | AMS 5045C | SAE J1397 | ASTM A513 (MT 1020) | ASTM A512 (1020, MT 1020) |
| AMS 5045 | AMS 5032B | SAE J412 | ||
| AFNOR CC 20 | AMS 5032 | SAE J403 | MIL S-11310 (CS 1020) | ASTM A29 |
| SS 1450 | AMS 5046 | SAE J414 | ASTM A830 | MIL S-7952 |
| DIN 1.0402 | BS 070 M 20 | ASTM A635 | ASTM A787 (MT 1020) | MIL S-16788 |
| UNI C 20 | BS 040 TO 20 | ASTM A827 | ASTM A794 | ASTM A108 |
| MIL T-3520 | ASTM A510 | ASTM A519 | ASTM A544 | ASTM A575 |
| ASTM A576 | ASTM A659 | |||
MACHINING
The machinability of SAE 1020 carbon steel is good, 65% compared to SAE 1112 carbon steel.
FORMABILITY
It is easy to work SAE 1020 carbon steel using all conventional methods as this alloy is highly ductile.
WELDING
SAE 1020 carbon steel can be easily welded using all traditional methods.
HEAT TREATMENT
SAE 1020 carbon steel can be hardened by heating to 815-871°C (1500 - 1600°F), which must be followed by water cooling. So it must be tempered.
FORGING
SAE 1020 carbon steel must be forged at 1260°C (2300°F) to 982°C (1800°F).
HOT WORK
SAE 1020 carbon steel can be hot worked in the range of 482 to 649 °C (900 to 1200 °F).
COLD WORK
Cold working SAE 1020 carbon steel is possible using all conventional methods. In case of prolonged cold work, strain relief treatment is recommended.
ANNELING
Full annealing of this alloy can be achieved between 871-982 °C (1600 to 1800 °F) followed by slow furnace cooling. This will provide the alloy with a tensile strength of about 65 ksi. A strain relief ring can be performed if necessary at 538°C (1000°F).
TEMPERA
Tempering should be followed by heat treatment and quenching at 315 to 538 °C (600 to 1000 °F) based on the required strength level. For example, quenching at 538 °C (1000 °F) gives the alloy a tensile strength of 90 ksi.
HARDNESS
SAE 1020 carbon steel can be hardened by cold working and by heat treatment, quenching and tempering.
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