"e.t.d." 150 ®
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Chemistry
Mechanical Properties

 
 

General

Another high strength material made by Niagara LaSalle's patented "e.t.d."® (elevated temperature drawing) process. Eliminates heat treating and secondary operations such as straightening, finish grinding, cleaning, and inspections. "e.t.d." 150® can be roll threaded, knurled and plated. Suitable for induction hardening. "e.t.d." 150® is also electro-magnetically tested using induced eddy currents.

 

Chemistry

Chemistry
Carbon 0.40 Min.
Manganese 0.70/1.10
Silicon 0.15/0.35
Chromium 0.80/1.20
Molybdenum 0.15/0.25

 

Mechanical Properties


Mechanical Properties
Tensile Strength **150,000 psi
Yield Strength (.2% offset) 130,000 psi
Elongation 10% (Mean)
Reduction of Area 37% (Mean)
Machinability 75% of 1212
Rockwell C Hardness ** 32 Min.
Brinell Hardness ** 302 Min.
* "e.t.d." 150® contains additives for improving machinability. These may be Tellurium, Selenium, Sulphur (.06 max), or others, separately or in combination.
**In the event of disagreement between hardness and tensile strength, the tensile strength shall govern.
MICRO-STRUCTURE Ferritic fine grain and fine pearlite. Fine grain size 5-8.
SIZE RANGE 7/16" rounds through 3-1/2"
TOLERANCES
(Tolerances, in decimals of an inch, provide for undersize variation only.)
Rounds
7/16" to 1-1/2" incl. 0.005"
Over 1-1/2" to 2-1/2" incl. 0.006"
Over 2-1/2" to 3-1/2" incl. 0.007"
LENGTH 11'/13'
FINISH
  1. Standard "as drawn" finish is smooth, accurate and dark in color.
  2. Ground and Polished finish provides close tolerances, high accuracies and bright surface. Rounds only.
EXAMPLE OF USE Parts you are now heat treating from Rc 30 to Rc 36.
 
 

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