niag lasalle

4140

Specifications Chemistry

 

 

General

This alloy responds well to heat treatment. Its chromium content provides good hardenss penetration, and the molybdenum imparts uniformity of hardness and high strength. In the annealed condition it machines at 110 sfm. Other desirable properties include good wear resistance, excellent toughness and good ductility in the quenched and tempered condition.

Shape Round, Hexagon, Flats
Grade 4140
Tolerance Meets cold finished carbon steel bar manufacturing tolerances
Application Highly stressed parts, or parts subject to severe wear.

 

Specifications
Available Sizes
Rounds
All popular sizes
Hexagon All popular sizes
Flats All popular sizes

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

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

 

Chemistry
Chemistry
Carbon 0.38/0.43
Maganese 0.75/1.00
Phosphorus 0.035 (Max)
Sulphur 0.04 (Max)
Silicon 0.15/0.35
Chromium 0.80/1.10
Molybdenum 0.15/0.25