"e.t.d." 150® is a high strength alloy steel with improved machinability. LaSalle Steel manufactures "e.t.d." 150® from medium carbon 4100 series alloy steel modified with one machinability additive such as selenium, sulfur, or tellurium. The high strength is developed by elevated temperature drawing below the critical temperature range. Mechanical properties are exceptionally uniform throughout the cross section of each bar. "e.t.d." 150® is often used to replace material being heat treated to the 32/38 HRC range. It can be roll threaded, knurled or plated and is suitable for induction hardening. Welding is generally not recommended.
e.t.d. 150 is a registered trademark of Niagara-LaSalle
CHEMICAL COMPOSITION: Heat Analysis - ranges and limits %
| C | Mn | Cr | Mo | Other |
|---|---|---|---|---|
| .40 | .70/1.10 | .80/1.20 | .15/.25 | See Note |
Note: "e.t.d." 150® contains additives to improve machinability. These may be Te, Se, S or others.
TYPICAL PROPERTIES: Approximate - not for specification
| Tensile (psi) | Yield (psi) | Elongation | Hardness | Machinability |
|---|---|---|---|---|
150,000 min |
130,000 min |
10% (mean) |
302 HB min* |
75% |
*In the event of a disagreement between hardness and tensile strength, the tensile strength shall govern.
Shapes and Conditions Available:
 | As Drawn Rounds through 3-1/4" Diameter
| Ground & Polished Rounds in 1" and 1-3/8" Diameters
| |
