*Always consult your Heat Treater*
     *Information Provided is General*

1018 is low-carbon steel, having higher manganese content than certain other low-carbon steels, such as 1020. Being richer in manganese, 1018 is a better steel for carburized parts, since it produces a harder and more uniform case. It also has higher mechanical properties and better machining characteristics. The hot rolled bars used in the manufacture of this product are of special quality.

Most cold rolled finished bars are produced by cold drawing. In this process, oversize hot rolled bars, which have been cleaned to remove scale, are drawn through dies to the required size. The larger sizes are generally turned and polished, the hot rolled bars having been machine turned, rather than drawn, followed by abrasive polished. Turned and polished bars tend to have a somewhat brighter finish than cold drawn bars.

A greater degree of dimensional accuracy and straightness in round bars is obtained by grinding and polishing. The product resulting from this process is known as Precision Shafting.

Hardening happens between 1650-1700°F .

1018 is an on-sized material, cold finish.


 +/- 0.000 / 0.020


 +/- 0.000 / 0.011

Mechanical Properties

Tensile Strength (psi)

Yield Strength (psi)

Elongation in 2″

Reduction of Area

Brinell Hardness

1″ RD, cold drawn






7″ RD, turn & polish






 Machinability:  A rating of 78%.  The average surface cutting speed is 130 feet per minute

 Hardening: 1018 will respond to any of the standard carburizing methods and subsequent heat treatments.  Carburize at 1650-1700F for approximately 8 hours, cool in box and reheat to 1400-1450F.Quench in water and draw at 300 – 350 F

 1018 Material In Stock

 Color Code:   BLACK 

 Flat Dimensions

  • 1/8″ x 1/8″ up to 6″ x 6″

  • Non-standard sizes, quoted upon request

 Hexagon Dimensions

  • ¼” up to 3 ½”

  • Non-standard sizes quoted upon request.

 Round Dimensions

  • 1/8″ up to 18″

  • Non-standard sizes, quoted upon request

 1018 Typical Analysis







.04 max

.05 max

 · Slight variations from typical analysis shown may occur in order to maintain the desired graphitizing potential.