DIMENSIONS

CCI
conversion
and
comparison
information
Tensile Testing
The following information on this basic testing procedure takes into account all changes
resulting from internationally approved ISO recommendations which have been incorporated
into a number of national standards.
ISO 6892 NFA 03-151
EU 2 UNI 55612
DIN 50145
JIS Z2201
BS 18/Part 2
Symbols, designations, units
Symbol Designation Unit
new old
A d Elongation after fracture %
d 0 d 0 Original diameter of parallel length of test
mm
piece of circular cross section
E E Modulus of elasticity N/mm 2 (MPa)
F P Load N
Fm Pmax Maximum load N
L 0 L 0 Original gauge length at ambient temperature mm
Lu LB Final gauge length after fracture mm
Rp
s Proof stress (non-proportional elongation)
N/mm 2 (MPa)
e.g. Rp0.2 s0.2 e.g. 0.2 non-proportional elongation
ReH sSo Upper yield stress N/mm 2 (MPa)
ReL sSu Lower yield stress N/mm 2 (MPa)
Rm sB Tensile strength N/mm 2 (MPa)
So Fo Original cross-sectional area mm 2
Su FB Minimum cross-sectional area
after fracture
Z Y Reduction of area %
e e Elongation %
ee eel Elastic elongation %
ep – Non-proportional elongation %
er ebl Permanent elongation %
et eges Total elongation %
mm 2
s s Stress
(nominal stress)
N/mm 2 (MPa)
108
Dimensions and Properties Handbook