Corrosion is the silent killer of coated metal parts — and the only way to know how long a coating will protect a surface is to accelerate the attack and measure it. The ASTM B117 salt spray test does exactly that, exposing samples to a continuous salt fog so you can compare corrosion resistance in days rather than years. At Kiyo R&D Lab, we run this test with controlled chamber conditions and clear, defensible reporting.
Whether you are qualifying a plating or paint system, verifying an incoming batch of coated parts, or settling a supplier dispute, an accurate ASTM B117 salt spray test gives you comparable, standard-aligned corrosion data. Our team handles sample setup, exposure, and evaluation so your results hold up to any customer audit.
In the ASTM B117 salt spray test, samples are placed in a sealed chamber and exposed to a continuous fog of neutral salt solution at a controlled temperature. The chamber conditions are tightly specified so that results are repeatable and comparable between labs. The table below lists the standard parameters.
| Parameter | Standard Condition |
|---|---|
| Salt solution | 5% sodium chloride (NaCl) |
| Chamber temperature | 35 °C (±2 °C) |
| pH of collected fog | 6.5 – 7.2 (neutral) |
| Exposure duration | Per spec: 24 to 1000+ hours |
Because the exposure time is set by your specification, a correct ASTM B117 salt spray test runs for exactly the duration and cycle your standard calls for, with the chamber held within these limits throughout.
After exposure, samples are assessed for first signs of corrosion — red rust on steel, white corrosion on zinc, blistering or undercutting at a scribe line. The ASTM B117 salt spray test gives a time-to-corrosion that lets you rank coatings and confirm whether a batch meets its hours-to-failure requirement.
It is an accelerated, comparative test: it is excellent for ranking and QC, and remains the industry benchmark for coating durability sign-off.
Corrosion resistance is a claim until it is measured. With Kiyo R&D Lab’s ASTM B117 salt spray test, you get controlled, repeatable corrosion data on calibrated chamber conditions, with NABL-accredited reporting where applicable — enough to qualify a coating, clear a batch, or settle a dispute.
Send us your coated parts and the specification hours, and our team will run the exposure and get you a defensible result.
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Web: www.kiyorndlab.com
Our ASTM B117 salt spray test evaluates coated and plated metal parts, fasteners, and panels for corrosion resistance. Accredited reporting is available for methods within our NABL scope; we confirm the exact status for your test before you commit.
It depends on your specification — anywhere from 24 hours to well over 1000 hours. The ASTM B117 salt spray test runs for exactly the duration your standard or customer requires.
It is an accelerated, comparative test, so it ranks coatings and confirms pass/fail against a spec rather than predicting exact field years. That is why it is used for QC and qualification.
B117 is continuous neutral salt fog; cyclic tests alternate wet, dry, and humid stages. The ASTM B117 salt spray test remains the most widely specified baseline for coating comparison.
Coated panels, plated parts, or fasteners that fit the chamber. We confirm quantity, orientation, and any scribe requirement when we scope your job.
