Wallchart of the Ink Casted Iron Gold Rating Standard

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Wallchart of standards for ink cast gold (GB/T9441-2009) 13

Wallchart of the Ink Casted Iron Gold Rating Standard(GB/T9441-2009) 13Chang.

（1）Spherical grade （1-6级）

（2）石墨大小分级图（1-6级）

（3）珠光体数量分级图

（4）分散分布的铁素体数量分级

（5）磷共晶数量分级

（6）碳化物数量分级图

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