Graphite bcoz it exapands on cooling
in general:
and also negative allowance is generally provided for the internal cavities in the casting so that upon cooling they contract to near the original dimension
Duplex Stainless Steel pipes are using when the corrosion allowance is exceed the limit to do Stainless Steel pipes. The maximum corrosion allowance allowed in a Design life (7000 cycle / 20 years) is 3 or 6 mm. This having a high yield strength than the S.S pipes
LOW CARBON steel material
There are two.
the material looses its shape
The density of material is expressed as volume divided by mass.
water..............
Taper allowance
Ridge allowance refers to the additional space or material provided at the ridge of a roof to accommodate the structural components and potential thermal expansion or contraction. It ensures proper ventilation and drainage, preventing water accumulation and damage. This allowance is crucial in roofing design to maintain the integrity and longevity of the roof structure.
so that the material does not fray.
Brass
Medical Allowance is a benefit not a privilege. It is generally provided by the Company to its employees in lieu of E.S.I. benefit.
cast iron
no- he must pay for the food he eats.
the amount of material required to form the rivet on installation
A personal travel allowance is a specified amount of money provided to individuals to cover travel-related expenses during a trip. This allowance can encompass costs such as transportation, meals, accommodations, and incidentals. It is often used by employers for employees traveling for work or by organizations for members attending events. The allowance may be provided as a fixed sum or reimbursed based on actual expenses incurred.
yes
In mechanical engineering, allowance refers to the intentional difference between the maximum material limits of two mating parts, typically a shaft and a hole. It is designed to ensure proper fit and function, allowing for variations in manufacturing and thermal expansion. Allowance can be either positive (clearance fit) or negative (interference fit), depending on the desired interaction between the parts. Properly calculated allowances are crucial for ensuring reliability and performance in mechanical assemblies.