DIMENSIONS

Specimen prior to tensile testing
Specimen after fracture
Stress σ
Stress (nominal stress) is defined as load, at any moment during the test, divided by the original
cross‐sectional area.
σ = F [N/mm 2 ]
S o
Tensile strength R m
Tensile strength is defined as stress corresponding to the maximum load divided by the original
cross-sectional area of the specimen.
R m =
F m [N/mm2 ]
S o
Modulus of elasticity E (static modulus of elasticity)
Quotient of load F divided by the original cross-sectional area S o and extension ∆L e divided by
extensometer gauge length L E0 in the rank of elastic deformation
E m =
conversion
and
comparison
information
CCI
F . L E0 = σ m . 100
So .∆L e ε e
Dimensions and Properties Handbook 109