AISI 1018 SAE UNS G10180 Carbon Steel Foundry
Steel foundry in China for producing AISI 1018 SAE UNS G10180 Carbon Steel castings. Today we will introduce the chemical composition, physical and mechanical properties and equivalent material grades of AISI 1018 Carbon Steel.
The chemical composition of AISI 1018 carbon steel is outlined in the following table.
|Sulfur, S||0.05 (max)|
|Phosphorous, P||0.04 (max)|
The physical properties of this grade of carbon steel are as below.
|Density||7.87 g/cm3||0.284 lb/in3|
The following table shows mechanical properties of cold drawn AISI 1018 carbon steel.
|Tensile strength||440 MPa||63800 psi|
|Yield strength||370 MPa||53700 psi|
|Modulus of elasticity||205 GPa||29700 ksi|
|Shear modulus (typical for steel)||80 GPa||11600 ksi|
|Elongation at break (in 50 mm)||15%||15%|
|Hardness, Knoop (converted from Brinell hardness)||145||145|
|Hardness, Rockwell B (converted from Brinell hardness)||71||71|
|Hardness, Vickers (converted from Brinell hardness)||131||131|
|Machinability (based on AISI 1212 steel. as 100 machinability)||70||70|
The thermal properties of this grade material are showed as the table below.
|Thermal conductivity||51.9 W/mK||360 BTU in/hr.ft2.°F|
Other designations that are equivalent to AISI 1018 carbon steel include:
|AMS 5069||ASTM A29||ASTM A512||ASTM A611 (D-1)||ASTM A635|
|AMS 5069A||ASTM A510||ASTM A794||ASTM A519||ASTM A544|
|ASTM A108||ASTM A513||ASTM A830||ASTM A545||ASTM A548|
|ASTM A549||ASTM A659||SAE J412||SAE J1397||MIL S-11310 (CS 1018)|
|ASTM A576||SAE J403||SAE J414||MIL J-1397||MIL J-403|
Fabrication and Heat Treatment
AISI 1018 carbon steel is rated at 62% of AISI 1112 carbon steel. Machining can provide this alloy with a good finish and continuous and hard chips. The alloy can be processed under all conditions.
It is easy to form this grade of carbon steel under annealing conditions.
AISI 1018 carbon steel can be welded using most conventional methods, such as gas, acetylene oxide, resistance and submerged fusion welding.
- Heat treatment
This Grade can be surface hardened to Rc 42, but only in thin sections. If the thicker part exceeds 4 in. , You can get Rc 28-30.
AISI 1018 carbon steel can be forged in the range of 996-1260°C (1825-2300°F).
- Thermal processing
AISI 1018 carbon steel can be easily hot processed.
- Cold working
The cold working of AISI 1018 carbon steel will affect the hardness and mechanical properties. Intermediate annealing must be performed to overcome the alloy’s tendency to work hardening.
The alloy can be fully annealed by soaking at 899°C (1650°F) and then cooling in the furnace. Process annealing can be carried out at a temperature of 649°C (1200°F).
AISI 1018 carbon steel is commonly used in high-volume screw machine parts applications. We can also find this alloy in applications as shafts, spindles, pins, rods, sprocket assemblies.
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