niag lasalle

8620 Leaded

Specifications Chemistry

 

 

General

Lead added to this grade increases parts production by some 25% with excellent finish and good tool life. Machining speeds are increased to 145 sfm and there are no adverse effects on properties. Readily carburized, the well balanced alloy content of this grade permits hardening to produce a strong, tough core and high case hardness.

Shape Round
Grade 8620
Tolerance Meets cold finished carbon steel bar manufacturing tolerances
Application Structural parts such as gears, pinions, spline shafts, pins and a variety of other important applications requiring a hard wear surface and a ductile core.

 

Specifications
Available Sizes
Rounds
All popular sizes

Available Length
Round
For best delivery lengths should be specified as 11'/13'.

Available Finishes
Rounds Standard "as drawn" finish
Rounds Ground and Polished
Rounds Turned Ground and Polished
Rounds Turned and Polished
Rounds Rough Turned

 

Chemistry
Chemistry
Carbon 0.18/0.23
Maganese 0.70/0.90
Phosphorus 0.035 (Max)
Sulphur 0.04 (Max)
Silicon 0.15/0.35
Nickel 0.40/0.70
Chromium 0.40/0.60
Molybdenum 0.15/0.25
Lead 0.15/0.35