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Chain Company
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Drop Forging
THIELE
Breaking-strength comparison for THIELE chain grades
In the elastic range (up to the testing force) all chains exhibit the same characteristic because their elastic
elongation is determined by their geometry alone.
Plastic (permanent) deformation only sets in when the load applied begins to exceed the testing force.
Because of the higher hardness levels of TSC and TSD Chains correspondingly higher forces are needed
to produce plastic deformation here.
Whatever the steel, increasing hardness naturally goes hand in hand with a reduction in the ultimate elonga-
tion or deformability of the material. This means that TSC and TSD Chains exhibit lower levels of elongation
at break.
By using a special grade (TIP) of mining chain steel THIELE is able to increase the breaking force, hardness
and wear resistance by approx. 5% while retaining the chain’s impact strength and deformability.
For TIP Chains the testing forces and breaking forces are therefore some 5% higher with no loss in ultimate
elongation.
All tests based on a 30x108 mm ‘natural black’ Round Link Chain.
TSD Breaking Force = 1402 kN
TSC Breaking Force = 1295 kN
TIP Breaking Force = 1247 kN
THD Breaking Force = 1185 kN