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ETD-150 steel is a high-strength, low-alloy grade with excellent machinability that machinists across the Chicago area specify regularly for precision shafting work. It sits in the same performance tier as 4140, 4340, and 9310, and it earns its place there for good reason. This grade was specifically developed to give manufacturers a machinable, in-bar strength bar without the extra processing steps that other grades require.
At Forte Precision Metals, we stock ETD-150 at our Franklin Park facility and ship it nationally and worldwide. If your engineer is calling for it and you need a reliable source with in-house grinding and secondary services, you are in the right place. We have been doing this since 1994, and our ISO 9001:2015 quality system covers every bar we ship.
Why ETD-150 Steel Is the Go-To Choice for Shafting Work in Chicago
ETD-150 was developed to meet the demands of precision machining environments where strength, consistency, and ease of processing all matter. It can be plated, knurled, and roll threaded. Warping, distortion, and residual stresses from cold working are reduced during machining, which means heat treatment, straightening, and finish grinding steps are no longer required before the bar hits your lathe.
What separates a good shafting grade from a poor one is how consistently it performs when you run it. ETD-150 is easy to drill, ream, and form, with chips that break up quickly for easy removal. That combination of bar strength and machinability is exactly what keeps it in regular rotation at Chicago area shops working on gears, shafts, and axles.
How We Prepare ETD-150 Bar Stock at Our Franklin Park Facility
We have been an ISO 9001:2015 certified round bar supplier since 1994. Our quality process covers every bar using advanced quality planning, statistical process control, Gauge R&R, and machine capability studies from raw material receipt through final shipment. That process is what gives you confidence that the bar arrives at the dimension you ordered.
Our centerless grinding operation handles diameters up to 7 inches and lengths up to 24 feet. We hold tolerances as tight as plus or minus .0001 inch with a microfinish down to 8RA. Starting from a bar at that finish level means less stock removal on your end, tighter first piece results, and less time correcting dimensions before the part is done.
Where ETD-150 Fits in Our Alloy Steel Round Bar Inventory
Our alloy steel lineup includes 4130, 4140, 4142, 4340, 52100, 8740, 9310, and ETD-150, among others. Each grade serves a different application, and understanding which one fits your part saves time and cost. 4140 is the call for highly stressed parts where hardness penetration and wear resistance are the priority. 4340 brings nickel-chromium-molybdenum content and high fatigue strength for aircraft components and crankshafts.
9310 is the choice for heavy-duty gear shafts and crankshafts where hardenability and fatigue strength are non-negotiable. ETD-150 rounds out the shafting tier with its own combination of good corrosion resistance, high strength, and excellent machinability. When your engineer specifies it, we have it in stock and ready to ship from our Franklin Park location.
In-House Services That Support Your ETD-150 Order
We handle metal turning, milling, bar chamfering, bar straightening, custom machining, precision metal cutting, and material packaging, all in-house at our Franklin Park facility. Metal turning produces axis-symmetric components from alloy steel at a tolerance of plus or minus .001 inch. Milling handles material removal for pockets, holes, slots, and 3D surface contours at the same tolerance level.
Custom machining handles parts up to 12 inches long and 10 inches in diameter at plus or minus .005 inch using CNC and CAD/CAM-equipped operations. Bar chamfering creates clean, precise ends and removes burrs before your bars ship. Bar straightening using rotary machines keeps ferrous bars accurate along their full length, which matters when a shafting application demands precise straightness end to end.
Why Chicago Area Manufacturers Choose Forte Precision Metals
We serve aerospace, automotive, construction, medical, military, oil and gas, and food processing manufacturers from our Franklin Park facility. Every order runs through our ISO 9001:2015 certified quality system, backed by advanced quality planning, statistical process control, Gauge R&R, and machine capability studies. That system has been in place since 1994, and it covers every bar we grind and ship.
We stock nine product material families so you can source stainless steel, carbon steel, alloy steel, aluminum, titanium, tool steel, nickel alloys, brass, copper, and bronze from one location. That means less time coordinating between suppliers and more confidence that every bar meets the same quality standard, regardless of grade.
Request a Quote From Forte Precision Metals
Have an ETD-150 shafting application ready to source? We are located at 9234 Parklane Ave, Franklin Park, IL 60131, and our team is available Monday through Saturday, 7 AM to 5 PM. Submit your requirements at fortemetals.com/request-a-quote or call +1 (847) 451-8888, and we will confirm availability, discuss your tolerance needs, and get your order moving.
You can also reach us by fax at 847-451-8887 or visit our alloy steel round bar page at fortemetals.com/products/alloy-steel-round-bar to review the full grade inventory before you call.
FAQs
What is ETD-150 steel used for?
ETD-150 is a high-strength, low-alloy steel used for gears, shafts, and axles. It offers excellent machinability and good corrosion resistance for automotive, construction, and manufacturing applications.
What tolerances does Forte hold on alloy steel round bar?
Centerless grinding holds plus or minus .0001 inch at 8RA microfinish. Metal turning holds plus or minus .001 inch. Custom machining holds plus or minus .005 inch.
What other alloy steel grades do you stock alongside ETD-150?
We carry 4130, 4140, 4142, 4340, 52100, 8740, and 9310. Each grade serves distinct applications from fatigue-critical components to high-strength fasteners and gear shafts.
Can Forte handle secondary operations on ETD-150 before it ships?
Yes. We offer bar chamfering, bar straightening, metal turning, milling, custom machining, and material packaging, all in-house at our Franklin Park facility.
