Blue Tempered Clock Spring

PACIFIC Blue Tempered & Polished Spring Steel is prehardened and tempered to a standard range of 48/51 HRC, polished and blued with a smooth finished (#1) edge. 1095 carbon steel is the standard grade for this product with some sizes available in 1075. It is available in thicknesses from 0.002" through 0.062" and widths (dependent on thickness) from 1/8" through 6". Originally known as "clock spring" steel, blue tempered & polished spring steel finds wide use in any equipment or machinery requiring coiled or straight length springs; also used for prehardened shims, blades, etc. Limited forming to large radii is possible.

Chemical Composition

Heat Analysis - ranges and limits %

C

.90/1.03

Mn

.30/.50

P

.040 Max

S

.050 max

Processing Temperatures

Typical

Forge

2100°F Max

Anneal

1450/1525°F

Harden

1450/1500°F

Shapes and Conditions Available
  • Available thickensses from 0.002" through 0.062"

  • Widths available from 1/8" through 6"