August 21, 2025

China and Japan Ferrous Metal Standard comparison

Cast iron GGG40 is a low grade of ductile iron. Leesh Holdings’ foundry has pouring this material for many years.

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  Noted: This sheet only for your reference, please don’t take this as your production, inspection or any other serious purpose. Tensile Strength Rm N/mm2 Vickers hardness HV Brinell hardness HB Rockwell hardness HRC 250 80 76.0 – 270 85 80.7 – 285 90 85.2 – 305 95 90.2 – 320 100 95.0 – 335 105

Common Ductile Iron Standards Comparison

Metallography Inspection
Hardness Inspection
Pressure Testing
Ultrasonic inspection

Manual moulding Manual moulding refers to the moulding process of using hand or hand tools to complete the main operations such as place tooling, compact and press sand to tight, remove tooling, place core box and adding gating system. The manual molding operation is flexible, the process equipment such as tooling and core box is simple, the production

Beased on many years casting expericne ,Leesh casting engineer team sharing some knowledge of the Casting Alloy fluidity
1-Concept of alloy fluidity
2-Method of Expressing fluidity
3-Factors affecting fluidity

Precision casting, also known as investment casting or lost wax casting, is a manufacturing process that has been used for centuries to create highly detailed and dimensionally accurate metal parts. This method is widely employed in industries such as aerospace, automotive, medical, and jewelry due to its ability to produce complex shapes with excellent surface finishes. In this article, we will explore the precision casting process, materials, applications, and key considerations.