Tensile Sample Preparation
& Testing Equipment

Start with incoming material form and the governing test method. Flat CNC systems best suit sheet, plate, and strip in the 0.02–1.00 in (0.5–25.4 mm) thickness range, delivering dog-bone profiles for methods such as ASTM D638 or ISO 527.

Lathe-based round systems excel on bar and rod stock around 0.25–2.00 in (6–50 mm) diameter, supporting metallic coupons for ASTM E8 when a turned gauge section is specified.

Match the specimen geometry to your grips and alignment practices. Wedge or serrated grips favor flat coupons, while collet or threaded-end setups favor round. Many metallic procedures call for a 2.00 in (50 mm) gauge length; plastics often use the same nominal length.

Verify required tolerances in the standard, then size the machine to hold typical coupon width and thickness within about ±0.002 in (±0.05 mm) and to blend fillet radii smoothly, for example near 0.50 in (12.7 mm) where applicable.

Consider throughput, surface quality, and operator workflow. For high volume, look for quick-change fixturing, repeatable locating, and tool libraries that maintain profiles across materials from 40–300 HB (≈ 430–3,000 MPa UTS).

Aim for a final surface near 63 µin Ra (1.6 µm Ra) or better on metals, remove burrs to roughly a 0.005 in (0.13 mm) edge radius, and use stable coolant delivery so heat does not distort the gauge section. If specimens require longitudinal polishing, plan capacity for repeatable passes and consistent media tracking.

If you would like to discuss your testing requirements, you can reach our team on the contact us page for friendly guidance on next steps.

Start with the materials and standards your lab must support. Metals commonly follow ASTM E8/E8M, plastics often follow ASTM D638 or ISO 527. Confirm specimen geometry first, such as flat dog-bone, subsize, or round bar, since that determines whether a CNC milling machine, a CNC lathe, or both are needed.

For consistent strain distribution, many labs target width tolerance within ±0.002 in (±0.05 mm) and surface roughness near 32 µin Ra (0.8 µm) after machining and polishing.

Match capacity and accuracy to throughput goals. A practical work envelope for flat workholding is around 12 in × 24 in (305 mm × 610 mm). Typical spindle power for flat machining ranges from 2 to 5 hp (1.5 to 3.7 kW).

For round specimens, look for chucking up to about 1.0 in (25 mm) diameter and 12 in (305 mm) length, with machine repeatability near ±0.0005 in (±0.013 mm). If operators run mixed alloys, prioritize recipe control, fixture quick-change, and safe chip or dust extraction.

Plan the finishing and testing steps. Longitudinal polishing equipment helps achieve uniform surface finish that supports valid tensile results, and it reduces the risk of edge artifacts.

Verify that shoulder dimensions or threaded ends will seat correctly in your UTM grips, for example wedge or threaded grips rated for the expected load such as 11,200 lbf (50 kN). Aligning machining, polishing, and gripping from the start prevents specimen rework and improves first-pass yield.

If you would like to discuss your testing requirements, you can connect with our team on the contact us page.

The range brings together the full tensile testing workflow under one roof:

• Flat tensile sample preparation machines
• Round tensile sample preparation machines
• Universal testing equipment
• Longitudinal polishing systems
• Consumables and spare parts

Sourcing the whole chain from one vendor keeps it consistent and standard-compliant. To plan a setup, request a personal quote.

The flat range is a line of automated flat specimen CNC machines that deliver high-speed, precise, repeatable results for ASTM E8, ASTM D638, and custom standards. They keep flat specimen preparation in house and under your control.

In-house preparation improves turnaround and repeatability. Explore flat specimen preparation.

When preparation, testing, polishing, and consumables come from one source, they are engineered to work together, which supports accurate, repeatable, standard-compliant results. It also simplifies support, training, and spare parts.

A single-vendor workflow reduces the integration gaps that add scatter. To plan a complete setup, talk to our team.

Round preparation is handled by the TensileTurn CNC machines, which turn round, square, or irregular stock with user-friendly software. They are built for long-term operation and are equally capable of standard CNC machining.

This makes round specimen preparation straightforward for any operator. Explore round specimen preparation.

The testing range covers electromechanical and servo-hydraulic universal testing machines, along with precision load cells, grips, fixtures, and software. It spans forces from a few newtons up to 3000 kN.

This lets one vendor cover both light and high-force testing. Explore our tensile testing equipment.

The range is backed by a full set of consumables, clamping fixtures, and spare parts, including specialty end mills and critical replacement components. These keep the preparation and testing equipment running accurately over time.

Matched consumables protect accuracy between services. Explore our consumables and spare parts.

Integration starts with producing specimens that meet geometry and finish targets the UTM expects. For metals to ASTM E8, typical dog-bone flats hold gauge width within ±0.001 in (±0.025 mm), gauge length of 2.0 in (50 mm), edge radii of 0.125 to 0.250 in (3.2 to 6.4 mm), and surface finish of 16 to 32 µin Ra (0.4 to 0.8 µm).

For plastics to ISO 527 or ASTM D638, consistent gauge thickness and a 2.0 in (50 mm) gauge length improve strain uniformity. Round E8 specimens benefit from concentricity within 0.002 in TIR (0.05 mm) and blends free of toolmarks.

For additional guidance, you can connect with our team on the contact us page to review options that fit your testing workflow on the page.

The range is built around widely used tensile and fatigue methods, including ASTM E8 and ASTM D638 for specimen preparation, ISO 6892-1 for metallic tensile testing, and ASTM E466, ASTM E606, and EN 6072 for fatigue-related polishing.

The right machine or fixture is matched to your specific standard. See our standards and certification.