1045 — ASTM A108


CTI Color-Red

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.

 
Chemistry

Carbon

0.43/0.50

Manganese

0.60/0.90

Phosphorus (Max.)

0.04

Sulfur

0.05
 
Typical Mechanical Properties

Tensile Strength

91,000 psi

Yield Strength

77,000 psi

Elongation in 2”

12%

Reduction of Area

35%

Brinell Hardness

179
Machinability
57% of 1212

Applications
Medium strength parts particularly where harden ability for wear or higher strength is needed. Shafts for hydraulic and pneumatic cylinders.