1095 Hard Blue Tempered Spring Steel Shim .032" Thick x 3.00" Wide x 48" Long

Thickness Tolerance ±0.002"

Width tolerance is ±0.010". Length tolerance is ±1/2".

C1095 Blue Tempered and Polished Spring Steel.
Rockwell hardness C 50.
MIL-S-7947, AISI-1095,
SAE- 1095, and AMS-5122.