Page 114 - PCMI December 2017 Journal

Material Proper es Of High Performance Precision Str1ip1/S2te6e/1l 7 Jonas Nilsson |R&D Mgr. Precision Strip | Sandvik Materials Technology | SE
SANDVIK SPRINGFLEX
Grade
% Cr
% Mo
%N
PRE
Sandvik Springflex
22
3.2
0.18
>35
ASTM 316L
17
2.2
-
Approx. 24
ASTM 301/304
18
-
-
Approx. 18
43
CPT at varying concentrations of sodium chloride (potentiostatic determination at +300mV SCE), pH approx. 6.0.
• Resistance to stress corrosion cracking, laboratory results for Sandvik Springflex of constant load specimens loaded to 85% of the proof strength at the test temperature.
SANDVIK SPRINGFLEX RELAXATION
• Sandvik Springflex shows better relaxation properties than austenitic grades at comparable tensile strength levels.
• The figure shows the relaxation (load loss) at room temperature as a function of time for Sandvik Springflex in the tempered condition compared to standard spring grades 17-7PH (EN 1.4568) and ASTM 301 (EN 1.4310).
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Issue 130 December 2017 PCMI Journal Page 113
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