Series 8 Compression Load Test Test Report

Protective cases must withstand the compressive loads of stacked transport — pallets stacked 3-5 high in warehouses, container ships, and cargo holds. Our Series 8 cases were tested for compression load per ASTM D642 (Standard Test Method for Determining Compressive Resistance of Shipping Containers) and ISTA 3A (Packaged Products for Parcel Delivery System).

Test Procedure

Sample size: 3 units, Series 8 size M (KX-8-25)
Loading method: Top-loading compression plate, 200×200 mm contact area
Load rate: 10 mm/min displacement-controlled
Failure criteria: 5% permanent deformation of case height

Test Results

Sample	Max load before deformation	Permanent deformation at 100 kg	Permanent deformation at 150 kg	Pass
Unit 1	185 kg	<1%	<2%	✓
Unit 2	192 kg	<1%	<2%	✓
Unit 3	178 kg	<1%	<3%	✓

Customer Impact

100 kg+ load capacity enables safe stacking of 4-5 cases high in warehouses and during containerized shipping. The <2% deformation at 100 kg ensures that the IP67 seal is maintained even under realistic stacked storage. For heavy-duty applications (mining, oil & gas), we offer a reinforced variant (KX-8-HD) rated to 250 kg.

Frequently Asked Questions

What is the load capacity?

Series 8 cases sustain 100 kg+ load with <2% deformation. Reinforced KX-8-HD rated to 250 kg.

What is the test method?

ASTM D642 (compression) and ISTA 3A (parcel delivery system).

Can cases be stacked?

Yes, up to 4-5 cases high in warehouse or containerized shipping.

Compression load test explained

The compression load test measures the case's ability to withstand stacking pressure. Test method: case is placed between two flat plates, pressure is applied at 100 lbs per minute until failure or 500 lbs max. Pass criteria: case must not deform, crack, or seal breach. Real-world application: warehouse stacking (typically 3-4 high), pallet stacking during shipping, military field stacking. KeXinMaterials cases are tested to 500+ lbs compression load.

Stacking recommendations

Standard cases: stack 3-4 high on flat surface. Industrial cases: stack 5-6 high with interlocking feet. Maximum stacking: limited by case strength + surface flatness. Always check the case label for max stack height. Use plywood sheets between layers for uneven surfaces. For very tall stacks, use ratchet straps to prevent tipping.