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You are here: Home- NewsHot Rolled Steel C1018/20

Hot Rolled Steel C1018/20

Posted:2016/5/19 2:52:52

Grade Description: A low carbon steel having a higher manganese content than mild steel and various other low carbon steels. Higher manganese makes this 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. Special manufacturing controls result in a quality product suitable for applications involving forging, heat treating, cold drawing, machining, etc.

Hot Rolled Steel C1018/20

Applications: Gears, pinions, worms, king pins, chain pins, ratchets, dogs, oil tool slips and liners, studs, anchor pins, special bolts, tie rods. Any carburized parts requiring hard surface and soft core

Analysis: C – .15/.20 Mn – .60/.90 P – .04 Max. S – .05 Max.

Mechanical Properties: (following values are average and are representative)

  As Rolled Normalized Annealed
Tensile Strength (psi) 67,000 66,000 60,000
Yield Point (psi) 45,000 43,000 40,000
Elongation (% in 2”) 36 37 38
Reduction of Area (%) 58 60 62
Brinell Hardness 137 137 121

Machinability: 78% of B1112. Weldability: Easily welded by all welding processes, and the resultant welds and joints are of extremely high quality. Grade of welding rod used depends on welding conditions such as thickness of section, design, service requirements, etc. Forging: Heat to 2150º – 2250º F. Normalizing: Heat to 1650º – 1750º F. Annealing: Heat to 1550º – 1650º F. Cool in furnace. Hardening: This grade will respond to any of the standard carburizing methods and subsequent heat treatments. For a hard case and a tough core, carburize at 1650º – 1700º F for approximately 8hrs, cool in box, reheat to 1400º – 1450º F, quench in water and draw at 300º – 350º F.

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