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All Categories > Alloyed Bars and Plates > Hot Rolled Alloy Steels > 4150 Mod Resulphurized Hot Rolled Heat Treated > 4150 Mod Resulphurized Hot Rolled Heat Treated Pressed - Rounds > Size 14  
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Size 14, 4150 Mod Resulphurized Hot Rolled Heat Treated Pressed - Rounds

4150 Modified Resulphurized is a free-machining chromium-molybdenum alloy steel. It is a relatively high hardenability alloy so that in the heat treated condition it has good overall strength and toughness. Being a resulphurized steel, it machines easily. It is supplied in the heat treated condition to a Brinell hardness of 262-311.

Stock Lengths 20' Approx.

Specifications  · Analysis  · Applications  · Mechanical Properties  · Machinability  · Weldability  · Heat Treating


Estimated Weight per Foot

523.9 lb

Estimated Weight 20-Ft. Bar

10478 lb

Carbon .50
Manganese 1.25
Sulphur .08
Cr. .70
Mo. .18

A general purpose alloy machinery steel used where greater strength and toughness is reguired than is available in many carbon machinery steels. Typical applications include gears, shafts, pinions, spindles, arbors, bolting, link pins, axles, etc.

Mechanical Properties
The following mechanical properties are typical in the heat treated condition:
Tensile Strength - 136.000 psi
Yield Strength - 119,000 psi
Elongation in 2" - 20.5%
Reduction of Area 55.0%
Brinell Hardness 285

Tensile Strength - 137.000 psi
Yield Strength - 116,000 psi
Elongation in 2" - 17.0%
Reduction of Area 50.0%
Brinell Hardness 293

4150 Modified Resulphurized machines approximately 40% as fast as 1212 Screw Stock. Average surface cutting speed is 65 feet per minute.

Difficult to weld because it is resulphurized and has definite air-hardening characteristics, but can be welded by any of the standard welding methods. Shielded arc welding, low hydrogen electrodes, pre-heating and post-heating is preferred and recommended

Heat Treating
Temperatures and response is similar to those of 4142-4150.


Tolerance - Hot Rolled Carbon and Alloy Bars
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Tolerances - Carbon and Alloy Bars
(PDF, 358KB)

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