Street Address: Room 1402, No. 467-4, Changjiang Middle Road, Economic and Technology Development Zone
City: Qingdao
Province: Shandong
Country/Region: China
Mercedes-Benz
Material Requirements
1. Must meet Grade GG20 for gray iron castings
2. Chemical Composition (Percent)
* Total Carbon: 3.0 - 3.50%
* Silicon: 1.90 - 2.30%
* Manganese: 0.60 - 0.90%
* Phosphorus: 0.12% Max.
* Sulfur: 0.10% Max.
3. Microstructure:
Graphite Structure: Predominantly type A, size 3-5.
Matrix: Pearlistic with max.15 ferrite. Free from chill
4. Physical Properties
Tensile Strength: Min. 200 N/mm
Brinell Hardness: 190 ~ 230