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ASTM D2570 corrosion specimen assembly with bracket

ASTM D2570 Test Specimens

Test specimens and accessories used in ASTM D2570 (Simulated Service Corrosion Testing of Engine Coolants). This test is used to measure the effect of engine coolants on metal test specimens that are similar to the metals present in automotive engines. The specimens are prepared in the same way as for ASTM D1384.


ASTM D2570 test specimens are 1 x 2 inches and have a 17/64-inch center hole.  Most specimens are 1/16-inch thick, except for cast aluminum and cast iron, which are 1/8-inch thick.  ASTM D2570 specimens are typically serial-numbered and pre-weighed.  Steel and cast iron specimens are packaged in VCI materials.


The specimens are assembled on a brass screw (10-24, 2-1/2" long) with insulating or metal (brass and steel) spacers between each specimen. Three specimen bundles or assemblies are bolted onto a bracket which is fastened to a cap so that the specimen bundles are submerged in the test fluid when the cap is in place.


The standard ASTM D2570 test specimen set includes:

  • Steel (UNS G10200, SAE 1020) specimen
  • Copper (UNS C110000, SAE CA110) specimen
  • Brass (UNS C26000, SAE C260) specimen
  • Solder-coated brass (C260 brass coated with Grade 30A solder) specimen
  • Cast aluminum (UNS A23190, SAE 326) (1/8" thick) specimen
  • Cast iron (SAE G3500) (1/8" thick) specimen


Each test specimen is batch traceable to the original material. These test specimens are also available as fully assembled sets.

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