We supply spring band steel either as pre-cut blanks or in coils with thickness values of 0.1 to 3.0 mm and widths of 2.0 - 120 mm!
Available materials:
1.4310, 1.4301, C 75 S, C 100 S, CuSn6, CuZn37 as well as CuBe2
The following dimensions and materials are always on stock (respectively in 1000 mm lengths):

Hardness:
A (soft): 600 N/mm2
B (hard): 1600 - 1800 N/mm2
C (rustproof): 1500 - 1700 N/mm2 quality:

Material A (soft) is to be hardened as follows:
1.) 5-minutes annealing at 820°C.
2.) Quenching in oil.
3.) 1-hour tempering at 400°C for RC 48 or a      hardness of 1630 N/mm2.
4.) Air cooling.