Numbering System

Plain Carbon (Manganese 1.00% Maxi

Free Cutting and Resulpherised

Resulpherised and Rephosphorised

Plain Carbon (Manganese Range 1.00% - 1.65%)

Manganese 1.75%

Nickel 3.50%

Nickel 5.00%

Nickel 1.25%, Chromium 0.65 to 0.80%

Nickel 1.75%, Chromium 1.07%

Nickel 3.50%, Chromium 1.50 to 1.57%

Nickel 3.00%, Chromium 0.77%

Corrosion and Heat Resisting

Molybdenum 0.20 to 0.25%

Molybdenum 0.40 to 0.52%

Chromium 0.50, 0.80, 0.95%, Molybdenum 0.12, 0.20, 0.25, 0.30%

Nickel 1.28%, Chromium 0.50%, Molybdenum 0.25 - 0.80%

Nickel 1.05%, Chromium 0.45%, Molybdenum 0.25 – 0.35%

Nickel 0.30%, Chromium 0.40%, Molybdenum 0.12%

Nickel 0.55%, Chromium 0.50%, Molybdenum 0.20%

Nickel 0.55%, Chromium 0.50%, Molybdenum 0.35%

Nickel 3.25%, Chromium 1.20%, Molybdenum 0.12%

Nickel 0.45%, Chromium 0.40%, Molybdenum 0.12%

Nickel 0.55%, Chromium 0.20%, Molybdenum 0.20%

Nickel 1.00%, Chromium 0.80%, Molybdenum 0.25%

Nickel 1.82 and 1.85%, Molybdenum 0.20% and  0.25%

Nickel 3.50%, Molybdenum 0.25%

Chromium 0.27, 0.40, and 0.50, 0.65%

Chromium 0.80, 0.87, 0.92, 0.95, 1.00 and 1.05%