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High Strength Materials

SHEFFIELD™ #20 FM TGP – Free Machining TGP Shaft

Sheffield #20 FM is an alloyed, hybrid, carbon steel that offers both a high degree of machinability, like a carbon steel, but has the strength consistent with an alloy steel.

Sheffield #20 FM does not exhibit hard and/or soft spots similar to what is seen in most carbon steels. It is designed for ease of machining with high speed automatic equipment, such as screw machinery.

Sheffield #20 FM should be considered as an upgrade when drawings or prints specify; 1018, 1045, 12L14, 1141, and 1144.

Typical Mechanical Properties

Hardness 260 BHN
Tensile Strength 135,000 P.S.I.
Yield Strength 113,000 P.S.I.
Machinability 85% of carbon steel
Surface Finish 15 RMS
(Based on 1/2" diameter specimen.)

Welding is not recommended for this material.

Available English Sizes

1/4" 1" 1-11/16" 2-9/16" 3-7/16"
5/16" 1-1/16" 1-3/4" 2-5/8" 3-1/2"
3/8" 1-1/8" 1-7/8" 2-11/16" 3-9/16"
7/16" 1-3/16" 1-15/16" 2-3/4" 3-5/8"
1/2" 1-1/4" 2" 2-7/8" 3-11/16"
9/16" 1-5/16" 2-1/16" 2-15/16" 3-3/4"
5/8" 1-3/8" 2-1/4" 3" 3-7/8"
11/16" 1-7/16" 2-5/16" 3-1/16" 3-15/16"
3/4" 1-1/2" 2-3/8" 3-1/4" 4"
7/8" 1-9/16" 2-7/16" 3-5/16"  
15/16" 1-5/8" 2-1/2" 3-3/8"

Call For Available Metric Sizes
 

Typical Diameter Tolerances

1/4" Round to 1-1/2" Round (+.000"/-.001")
Over 1-1/2" Round to 3" Round (+.000"/-.002")
Over 3" Round to 4" Round (+.000"/-.003")
Up to 38 MM (+.000"/-.001")
Over 38 MM to 80 MM (+.000"/-.002")
Over 80 MM to 100 MM (+.000"/-.003")

Available Lengths

10/12 Ft Random Lengths
20/24 Ft Random Lengths
Custom Cut Lengths