Introduction
SAE 1018 carbon steel is a free machining grade that is the most commonly available grade around the world. Although its mechanical properties are not very unique, it still can be easily formed, machined, welded and fabricated.
Chemical composition and Mechanical properties Of SAE 1018
| Chemical composition(%) of SAE 1018 | ||||||
| Element | C% | Si% | Mn | S | P | Fe |
| Content | 0.15-0.20 | ≤0.05 | 0.60-0.90 | ≤0.05 | ≤0.045 | Balance |
Mechanical properties of SAE 1018 | |||
| Performance | Tensile strength/Mpa | Elongation /% | Yield strength/Mpa |
| Proportion | 440 | 15 | 370 |
Application
It is widely used in
Oil and Gas Pipeline
Chemical Industry
Plumbing
Heating
Oil & Gas Industry
Water Supply Systems
Paper & Pulp Industry
Power Plant
Fabrication Industry
General purpose applications
Food Processing Industry
Structural Pipe
Heat Exchangers
Also used for other industrial purpose etc.
Other Analysis
Forging Properties:
Forging of SAE 1018 carbon steel can take place in the range of 996-1260°C (1825-2300°F).
Stress Relieving:
500°C – 700°C is required to relieve stress in AISI 1018 mild/low carbon steel that is later cooled down in still air.
Normalizing:
AISI 1018 mild/low carbon steel should be heated at 890°C – 940°C and then cooled in still air.
Annealing:
Complete annealing of this alloy can be achieved by soaking at 899°C (1650°F) followed by furnace cooling. Process annealing can be done at 649°C (1200°F)
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