niag lasalle


Specifications Chemistry Mechanical Properties




This medium carbon steel is used for heat treating (quenching and tempering). Although it has only a fair response to conventional quenching, it is widely used where requirements are not too stringent. It is also used extensively in induction hardening applications. This is not normally considered a screw machine steel and is only fair for brazing and welding. However, it can be forged satisfactorily and is the most common shafting steel in the medium carbon range.

Shape Round, Square, Flat, Hexagon
Grade 1045
Tolerance Meets cold finished carbon steel bar manufacturing tolerances
Application Medium strength parts, particularly where hardenability for wear or higher strength is needed. Shafts for hydraulic and pneumatic cylinders.


Available Sizes
All popular sizes
Squares Limited Sizes
Flats Limited Sizes
Hexagon Limited Sizes

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

Available Finishes
All Shapes Standard "as drawn" finish
All Shapes Ground and Polished
All Shapes Turned Ground and Polished
All Shapes Turned and Polished


Carbon 0.43/0.50
Manganese 0.60/0.90
Phosphorus 0.04 (Max)
Sulphur 0.05 (Max)


Mechanical Properties
Mechanical Properties
Tensile Strength 91,000psi
Yield Strength 77,000psi
Elongation in 2" 12%
Reduction of Area 35%
Brinell Hardness 179