import type { MaterialGradeConverterInput, MaterialGradeConverterResult } from './types.js';
/**
 * Convert material grade between ASTM, EN, JIS, GB, and KS standards
 *
 * @reference ASTM, EN, JIS, GB, KS cross-reference tables
 * @param input - Source standard and grade designation
 * @returns Equivalent grades in all 5 standards with category info
 */
export declare function materialGradeConverter(input: MaterialGradeConverterInput): MaterialGradeConverterResult;
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