440A, 440B, 440C

Ibintu bisanzwe mubisanzwe 440:

• Chromium 16-18%
• 1% Manganese
• 1% silicon
• 0,75% Molybdenum
• 0,04% Fosifore
• 0,03% sulfure
• Ijanisha rya Carbone

440Icyuma

• 0,6-0,75% Carbone

440B ibyuma

• 0,75-0.95% Carbone

440C ibyuma

• 0,95-1.20% Carbone