A257

For A257, astm committee is A06; last title is Method of Test for Permeability and Core Loss of Flat-Rolled Magnetic Materials Using 28-cm. Specimen (Tentative); year first issued is 1943; year withdrawn is 1944, verified against its source on 2026-08-19.

ASTM committee: A06 verified
Designation: A257 verified
Last title: Method of Test for Permeability and Core Loss of Flat-Rolled Magnetic Materials Using 28-cm. Specimen (Tentative) verified
Year first issued: 1943 verified
Year withdrawn: 1944 verified

Sourceastm.org

Verified2026-08-19

Review by2027-02-15

DatasetASTM withdrawn standards — replacement / redesignation crosswalk

What the source says

Method of Test for Permeability and Core Loss of Flat-Rolled Magnetic A257 1943 1944 Materials Using 28-cm. Specimen (Tentative)

— astm.org, retrieved 2026-08-19

Source

astm.orghttps://www.astm.org/v3/assets/blt5eb0a2cb04534832/blt805b8ea93e02a6cd/69d75b5dc0c9536f4a041cdc/A06_Withdrawn.pdf

Last verified against source: 2026-08-19. Due for re-check by 2027-02-15. This page as Markdown · OKF bundle · full dataset as JSON.