FIELD: metallurgy.
SUBSTANCE: steel plates with thickness t (mm) with surface film does not has rust on surface after testing in wet chamber for 48 hours at 50°C and 98% humidity, at that losses in iron W17/50 after exposure by the electronic beam reduce by at least (-500t2+200t - 6.5)% of losses in iron W17/50 prior to exposure by the electronic beam, and are (5t2-2t+1.065) W/kg or below.
EFFECT: assurance of low losses in iron without harm to the corrosion resistance.
5 cl, 3 dwg, 5 tbl
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