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A low-carbon steel having a higher manganese content than Mild Steel and certain other low-carbon steels. Being richer in manganese, it is a better steel for carburized parts, since it produces a harder and more uniform case. It also has higher mechanical properties, including Brinell hardness, and better machining characteristics. In its production, special manufacturing controls are used for chemical composition, heating, rolling, surface preparation, etc. The result is a quality product suitable for applications involving forging, heat treating, cold drawing, machining, etc.

Special Quality

Stock Lengths: 20'

ASTM A 576 - UNIS G10180

Color Marking: Block
Unit of Measure

Specifications

Estimated Weight per Foot

 N/A 121.8 lb

Estimated Weight 20-Ft. Bar

 N/A 2436 lb

Analysis

N/A Carbon .15/.20
Manganese .60/.90
Phosphorus .04 Max.
Sulphur .05 Max.

Specifications

N/A ASTM A 576 and AMS 5070 are generally applicable specifications.

Applications

N/A Since 1018 is a good carburizing steel, it is especially suitable for parts requiring high surface hardness with a relatively soft core, such as gears, pinions, worms, king pins, chain pins, ratchets, dogs, oil tool slips and liners. 1018 is also often specified for studs, anchor pins, special bolts, tie rods, etc.

Mechanical Properties

N/A The following are average values for 1" round and may be considered as representative of this grade:
As Rolled
Tensile Strength - 67.000 psi
Yield Point - 45.000 psi
Elongation in 2" - 36%
Reduction of Area - 58%
Brinell Hardness - 137

Normalized
Tensile Strength - 66.000 psi
Yield Point - 43.000 psi
Elongation in 2" - 37%
Reduction of Area - 60%
Brinell Hardness - 137

Annealed
Tensile Strength - 60.000 psi
Yield Point - 40.000 psi
Elongation in 2" - 38%
Reduction of Area - 62%
Brinell Hardness - 121

Weldability

N/A This grade is easily welded by all the welding processes, and the resultant welds and joints are of extremely high quality. The grade of welding rod to be used depends on thickness of section, design, service requirements, etc.

Forging

N/A Heat to 2150°-2250°F.

Normalizing

N/A Heat to 1650°- 1750°F. Cool in air.

Annealing

N/A Heat to 1550°-1650°F. Cool in furnace.

Hardening

N/A This grade will respond to any of the standard carburizing methods and subsequent heat treatments. For a hard case and a tough core, the following heat treatment is suggested: Carburize at 1650°-1700°F for approximately eight hours, cool in box, reheat to 1400°-1450°F, quench in water, and draw at 300°-350°F.