• KH 1;	• 0.17% Al;	• 0.17% FeB;	• 0.25% FeTi;
• KH 2;	• 0.33% Al;	• 0.33% FeB;	• 0.50% FeTi;
	• 0.50% Al;	• 0.50% FeB;	• 0.75% FeTi.