Alloy surcharges 2021 Sept : Spring steel Strip 1.4310 : 2,44Spring steel strip 1.4310 (increased Mo) : 2,60 Spring steel wire 1.4310 : 2,64Stainless steel strip 1.4301 : 2,17Precision steel strip 1.4301 : 2,60Stainless steel wire 1.4301 : 2,81Precision steel strip 1.4404 : 4,02Stainless steel wire 1.4404 : 4,24

Edging possibilities at an angle of 90°according EN 10151, table 5 (excerpt)

Position of the bending axis: (rod across/along the grain)

r = radius of the rod
t = thickness of the material

Remark:
All specified values (out of standard EN 10151) have not been tested by Stahl Becker. It seems like the prefix "≤" is definitely wrong and has to be “≥”. That means, if the thickness is for example 1 mm, tensile strength 1300 to 1500 N/mm², edging across the grain, the quotient of radius of the rod and thickness has to be ≥ 3 and not ≤ 3.

Thickness > 0,05 to 0,25 mm > 0,25 to 0,50 mm > 0,50 to 0,75 mm > 0,75 to 1,00 mm
Tensile Strength (N/mm²)
1150-1300 (≤ 0,5/≤ 2,5) (≤ 1,0/≤ 3,0) (≤ 2,0/≤ 4,0) (≤ 2,5/≤ 5,0)
1300-1500 (≤ 1,5/≤ 3,0) (≤ 2,0/≤ 4,0) (≤ 2,5/≤ 5,0) (≤ 3,0/≤ 7,0)
1500-1700 (≤ 2,0/≤ 4,5) (≤ 2,5/≤ 5,0) (≤ 3,0/≤ 7,0) (≤ 3,5/≤ 9,5)
1700-1900 (≤ 2,5/≤ 9,0) (≤ 3,0/≤ 9,5) (≤ 3,5/≤ 11) (-/-)