Tensile Strength Applications

  • Quality Control and Material Verification of incoming stock of metal and plastics where there is a need for correct strength properties. This includes testing finished or semi-finished goods such as chains, ropes, cables, fasteners, welds, or simple structural components. 
  • Safety Critical Components where there is need to confirm conformance to safety standards such as lifting and rigging gear where failure under load can be catastrophic or deadly. This includes testing steel used in pressure vessels (tanks, boilers, etc.)
  • Evaluating Different Alloys: A manufacturer might compare the tensile strength of several different metal alloys to select the strongest and most cost-effective one for a particular part. 
  • Heat Treatment Effects: Testing the effects of heat treatment (hardening, tempering, annealing) on the tensile strength of a material. This information helps optimize heat treatment processes.
  • Prototyping where quick tensile tests on parts reveal whether a design has a chance of meeting strength requirements.
  • Adhesives and Bonding where the strength of adhesive joints or welds to make sure they meet the required loads.

Savings Benefits of Strength tests

  1. Faster Testing

You won't need an extensometer or gauges which simplifies the test setup. If you're not measuring elongation, you can pull the specimen to failure at a faster rate, speeding up the testing process. Speeding up the test process translates to more test samples per hour.

  1. Reduced Equipment Costs

Eliminating the cost of the strain sensor (extensometer) can save considerable cost. 

  1. Simpler Data Analysis

With a Newton software, you can use a lower price strength package because data analysis is less involved than when calculating properties like modulus of elasticity. Simpler analysis leads to faster results

  1. Less Specialized Training

Technicians don't need to learn how to properly attach and calibrate extensometers or deal with complex strain calculations which simplifies training and allows lower-skilled personnel to perform tests.


Concerns about whether you want only tensile strength

While it saves time and money, only focusing on strength means you lose out on other insights like ductility, toughness, and how the material behaves under stress. This information may be critical for some applications.

Some industry standard test methods require full stress-strain curves, regardless of whether the primary interest is in the strength values.

Summary 

Overall, if your application truly only needs to verify the strength of a material and other properties aren't critical, then focusing exclusively on strength measurements can offer significant savings in terms of time, equipment, and operating costs. If the goal is to quickly assess if a material meets a minimum strength requirement for an application, then a tensile strength test can be sufficient. An extensometer can be added to the control system at any time.