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Introduction

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.   

Chemical composition and Physical properties Of AISI 1018

Chemical Composition of  AISI 1018

Element

C

P

S

Fe

Content

0.14 – 0.20 %

≤ 0.040 %

≤ 0.050 %

98.81 – 99.26 %
Physical properties of AISI 1018
GradeHardness BrinellHardness, KnoopElongation at BreakMachinability
 AISI 1018126
 14515% 70%

Application

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 steel.

Other Analysis

Weldability

AISI 1018 steel can be instantly welded by all the conventional welding processes. Welding is not recommended for AISI 1018 steel when it is carbonitrided and carburized.

Low carbon welding electrodes are used in the welding procedure. Post-heating and pre-heating are not necessary, although pre-heating can be performed for sections over 50 mm. Post-weld stress-relieving also has benefits, like the pre-heating process.

Heat Treatment

The heat treatment for AISI 1018 steel consists of the following processes:

Normalizing :AISI 1018 steel should be heated at 890°C – 940°C and then cooled in still air.

Forging  This process requires heating at 1150°C – 1280°C and AISI 1018 steel is held until the temperature becomes constant. 900°C is the minimum temperature required for the forging process. The steel is cooled in air after this process.

Tempering :AISI 1018 steel is tempered at 150°C – 200°C to improve case toughness. This process has little or no effect on hardness. Grinding cracks are reduced when AISI 1018 steel is tempered.

Annealing :The AISI 1018 steel is heated at 870°C – 910°C and allowed to cool in a furnace.

Stress Relieving :A temperature of 500°C – 700°C is required to relieve stress in AISI 1018 steel that is later cooled down in still air.

Case Hardening  :This process requires heating to be carried out between 780°C – 820°C. AISI 1018 steel is then quenched in water.

Core Refining  :This is an optional process that requires heating at 880°C – 920°C. After being heated, AISI 1018 steel is moistened in oil or water.

Carburizing :This process takes place at 880°C – 920°C for AISI 1018steel. It is used in bending, crimping and swaging processes and is widely used for fixtures, mounting plates and spacers and in applications that do not need high alloy steel and high carbon strength. 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 steel.

*Top 20 companies in  steel industry trade volume.

*Customized processing  steel one-stop purchase.

*Exports of  steel exceeded tens of billions for 5 consecutive years.        

*We have a complete set of testing equipment, such as ut & ET, hydrauilc testinge quipment, spectrometer, scanning electron microscope, etc, and have   passed SGS TUV certification.

*JM Steel has hundreds of millions of high-end processing equipment at home and abroad, including precision cutting equipment: advanced Italian Nova stainless steel Kaiping production line, Taiwan Weitai stainless steel cross-cutting line, Taiwan Weitai stainless steel slitting line, large-scale stainless steel cold and hot rolling Flattening machine, slitting machine, etc.

For More details of each item,contact our sales to know more about it.Thanks for your visiting of JMJDWX Steel,save our web.You will be more professional in steel industry.

1020 carbon steel is a commonly used plain carbon steel. It has a good combination of strength and ductility and can be hardened or carburized.1020 carbon steel which contains 0.12 to 2% carbon. This steel category gains hardness and strength with heat treatment when the percentage of carbon content increases but the ductility is reduced.

  • Forging:1020 carbon steel should be forged at 1260°C (2300°F) down to 982°C (1800°F).

  • Hot Working:1020 carbon steel can be hot worked in the range of 482 to 649°C (900 to 1200°F).

  • Cold Working:Cold working 1020 carbon steel is possible using all the conventional methods. In case of prolonged cold working, it is recommended that stress relief annealing be carried.

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Chemical composition and mechanical properties Of  1020 carbon steel :

Chemical composition of 1020 carbon steel 
ElementCMnPSFe
Content0.18-0.230.30-0.600.04 (max)0.05 (max)Balance
Physical properties of 1020 carbon steel 
GradeTensile strengthYield pointModulus of elasticityShear modulus
1020420 MPa350 MPa205 GPa80 GPa

*Top 20 companies in  steel industry trade volume.

*Customized processing  steel one-stop purchase.

*Exports of  steel exceeded tens of billions for 5 consecutive years.        

*We have a complete set of testing equipment, such as ut & ET, hydrauilc testinge quipment, spectrometer, scanning electron microscope, etc, and have   passed SGS TUV certification.

*JM Steel has hundreds of millions of high-end processing equipment at home and abroad, including precision cutting equipment: advanced Italian Nova stainless steel Kaiping production line, Taiwan Weitai stainless steel cross-cutting line, Taiwan Weitai stainless steel slitting line, large-scale stainless steel cold and hot rolling Flattening machine, slitting machine, etc.

For More details of each item,contact our sales to know more about it.Thanks for your visiting of JMJDWX Steel,save our web.You will be more professional in steel industry.