AISI- Mild steel Plates
|Class||Low Carbon Steel|
|Category||Cold Work Tool Steel|
|Grades||U.S AISI 1108,1109,1110,1116,1117,1118,1119
We offer a wide range of mild steel products that are available in various shapes like square, rectangle and round. Apart from this, these are offered in every format like sheet, Plates,flat and rounds. In addition, our team of quality checkers thoroughly checks our range of mild steel products at every level.
We also offer a wide range of Bright Steel Bars products that are procured from reliable vendors. These are widely used in industries such as electronic, thermal power stations and machinery making. We have all sizes of Plates, Sheets, Round Bars, Flat bars, Hexagonal in stock.
We offer profile cutting as per customer’s requirement. We can cut the profile in any shape like Circle, Square, Rectangle or any other shapes.About Mild Steel
AISI 1018 mild/low carbon steel has excellent weldability and produces a uniform and harder case and it is considered as the best steel for carburized parts. AISI 1018 mild/low carbon steel offers a good balance of toughness, strength and ductility. Provided with higher mechanical properties, AISI 1018 hot rolled steel also includes improved machining characteristics and Brinell hardness.
Specific manufacturing controls are used for surface preparation, chemical composition, rolling and heating processes. All these processes develop a supreme quality product that are suited to fabrication processes such as welding, forging, drilling, machining, cold drawing and heat treating.
Mild steel composition
|Carbon, C||0.14 – 0.20 %|
|Iron, Fe||98.81 – 99.26 % (as remainder)|
|Manganese, Mn||0.60 – 0.90 %|
|Phosphorous, P||≤ 0.040 %|
|Sulfur, S||≤ 0.050 %|
|Density||7.87 g/cc||0.284 lb/in3|
Mild steel properties
|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|
|Tensile Strength, Ultimate||440 MPa||63800 psi|
|Tensile Strength, Yield||370 MPa||53700 psi|
|Elongation at Break (In 50 mm)||15.0 %||15.0 %|
|Reduction of Area||40.0 %||40.0 %|
|Modulus of Elasticity (Typical for steel)||205 GPa||29700 ksi|
|Bulk Modulus (Typical for steel)||140 GPa||20300 ksi|
|Poissons Ratio (Typical For Steel)||0.290||0.290|
|Machinability (Based on AISI 1212 steel. as 100% machinability)||70 %||70 %|
|Shear Modulus (Typical for steel)||80.0 GPa||11600 ksi|
|Electrical resistivity @0°C (32°F)||0.0000159 Ω-cm||0.0000159 Ω-cm||annealed condition|
|@100 °C/ 212 °F||0.0000219 Ω-cm||0.0000219 Ω-cm||annealed condition|
|@ 200 °C/392 °F||0.0000293 Ω-cm||0.0000293 Ω-cm||annealed condition|
Mild steel (general speifications)
The machinability of AISI 1018 mild/low carbon steel is graded at 78% of B1112.Weldability
AISI 1018 mild/low carbon steel can be instantly welded by all the conventional welding processes. Welding is not recommended for AISI 1018 mild/low carbon steel when it is carbonitrided and carburized.
Low carbon welding electrodes are to be used in the welding procedure, and post-heating and pre-heating are not necessary. Pre-heating can be performed for sections over 50 mm. Post-weld stress relieving also has its own beneficial aspects like the pre-heating process. Mild steel Heat Treatment
The heat treatment for AISI 1018 mild/low carbon steel consists of the following processes:
- AISI 1018 mild/low carbon steel should be heated at 890°C – 940°C and then cooled in still air.
- This process requires heating between 1150°C – 1280°C and AISI 1018 mild/low carbon steel is held until the temperature becomes constant.
- 900°C is the minimum temperature required for the forging process.
- The steel is then cooled in air after this process.
- AISI 1018 mild/low carbon steel is tempered at between 150°C – 200°C for improvement of case toughness. This process has little or no effect on hardness.
- The occurrence of grinding cracks is reduced when AISI 1018 mild/low carbon steel is tempered at the above mentioned temperature.
- The AISI 1018 mild/low carbon steel is heated at 870°C – 910°C and allowed to cool in a furnace
- 500°C – 700°C is required to relieve stress in AISI 1018 mild/low carbon steel that is later cooled down in still air.
- This process requires heating to be carried out between 780°C – 820°C. AISI 1018 mild/low carbon steel is then quenched in water.
- This is an optional process that requires heating at 880°C – 920°C.
- AISI 1018 mild/low carbon steel after being heated is moistened in oil or water.
- Carburizing takes place at 880°C – 920°C.
Mild steel Applications
- It is used in bending, crimping and swaging processes.
- Carburized parts that include worms, gears, pins, dowels, non-critical components of tool and die sets, tool holders, pinions, machine parts, ratchets, dowels and chain pins use AISI 1018 mild/low carbon steel.
- It is widely used for fixtures, mounting plates and spacers.
- It is suitably used in applications that do not need high strength of alloy steels and high carbon.
- It provides high surface hardness and a soft core to parts that include worms, dogs, pins, liners, machinery parts, special bolts, ratchets, chain pins, oil tool slips, tie rods, anchor pins, studs etc.
- It is used to improve drilling, machining, threading and punching processes.
- It is used to prevent cracking in severe bends.