440A, 440B, 440C

Nā mea maʻamau ma waena o nā kila 440 a pau:

• 16-18% chromium
• 1% Manganese
• 1% silika
• 0.75% Molybdenum
• 0.04% Phosphorus
• 0.03% sulfur
• Kekahi pākēneka o Carbon

440A kila

• 0.6-0.75% Kalapona

440B kila

• 0.75-0.95% Kalapona

440C kila

• 0.95-1.20% Kalapona