Calculation of creep relaxation of stresses in flange bolts
Attention!
This calculation is only a simplified estimation and does not replace a detailed design calculation.
Input data
Material
10 CrMo 9-10
13 CrMo 4-4
14 MoV 6-3
15 CrMoV 5-10
X10 CrMoVNb 9-1
X11 CrMoWVNb 9-1-1
X20 CrMoV 12-1
Kohlenstoffstahl
Chromstahl
Nichtrostender Stahl
1.4980.600.013.0
1.4980.600.152.0
Design temperature
T
d
°C
Design life
t
DL
h
Tensile stress at the end of life
σ
EoL
N/mm²
Root diameter of a bolt
d
3
mm
Number of bolts
n
B
Required bolting force at the end of life
F
EoL
kN
Calculate
Results
Required bolting force at the start of life
F
SoL
kN
Tensile stress at the start of life
σ
SoL
N/mm²
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