{"id":2835,"date":"2025-05-08T17:33:15","date_gmt":"2025-05-08T09:33:15","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?p=2835"},"modified":"2025-05-30T14:10:07","modified_gmt":"2025-05-30T06:10:07","slug":"80-55-06-ductile-iron-equivalent-hardness-and-machinability","status":"publish","type":"post","link":"https:\/\/www.ductileironsuppliers.com\/ar\/80-55-06-ductile-iron-equivalent-hardness-and-machinability.html","title":{"rendered":"80 55 06 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0627\u0644\u0645\u0643\u0627\u0641\u0626 \u0648\u0627\u0644\u0635\u0644\u0627\u0628\u0629 \u0648\u0627\u0644\u0642\u0627\u0628\u0644\u064a\u0629 \u0644\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0622\u0644\u064a 80 55 06"},"content":{"rendered":"

The \u200c80-55-06 ductile iron equivalent<\/strong>\u200c refers to a high-strength grade of nodular cast iron, widely used in automotive, hydraulic, and industrial components for its balance of tensile strength (80 ksi), yield strength (55 ksi), and elongation (6%). Understanding its \u200chardness<\/strong>\u200c and \u200cmachinability<\/strong>\u200c is critical for material selection, tooling design, and manufacturing efficiency. This grade typically exhibits a \u200cBrinell hardness (HB) of 170\u2013230<\/strong>\u200c, depending on heat treatment and microstructure, with pearlitic matrices offering higher hardness than ferritic ones.<\/p>\n

\"80<\/a>
80 55 06 Ductile Iron Equivalent, Hardness And Machinability<\/figcaption><\/figure>\n

1. Introduction to 80-55-06 Ductile Iron<\/strong><\/h2>\n

80-55-06 ductile iron, also known as ASTM A536 Grade 80-55-06, is a high-strength cast iron alloy characterized by its nodular graphite structure.<\/span> This composition imparts enhanced mechanical properties compared to traditional gray cast iron, making it suitable for demanding applications.<\/span><\/p>\n

2. Chemical Composition<\/strong><\/h2>\n

The typical chemical composition of 80-55-06 ductile iron is as follows:<\/span><\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n\n
Element<\/th>\nPercentage (%)<\/th>\n<\/tr>\n<\/thead>\n
Carbon<\/span><\/td>\n3.50 – 3.90<\/span><\/td>\n<\/tr>\n
Silicon<\/span><\/td>\n2.25 – 3.00<\/span><\/td>\n<\/tr>\n
Manganese<\/span><\/td>\n0.15 – 0.35<\/span><\/td>\n<\/tr>\n
Sulfur<\/span><\/td>\n\u2264 0.025<\/span><\/td>\n<\/tr>\n
Phosphorus<\/span><\/td>\n\u2264 0.08<\/span><\/td>\n<\/tr>\n
Magnesium<\/span><\/td>\n0.03 – 0.05<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

These elements contribute to the alloy’s strength, hardness, and machinability.<\/span><\/p>\n

3. Mechanical Properties<\/strong><\/h2>\n

80-55-06 ductile iron exhibits the following mechanical properties:<\/span><\/p>\n