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Greetings everyone,

We normally produce steel castings to ASTM, British, European standards. 

The following chemistry and BHN is required to produce castings for coal crushing equipment. (Impact requirement).

Chemistry %C 0.35, %Si 2.0, %Mn 0.7, %S 0.035, %P 0.035, % Cr 2.3, %Mo 0.3. Hardness requirement, 350 to 400HB.

None of our normal steel production is produced with 2.00% Silicon. What effect will this level of silicon have on a typical anneal or normalize heat treatment cycle.

What effect will this silicon level have on an oil quench and temper cycle requiring the BHN requirement. 

Comment on the above will be much appreciated.

regards, Brian Seviour.

Greetings everyone,

We normally produce steel castings to ASTM, British, European standards. 

The following chemistry and BHN is required to produce castings for coal crushing equipment. (Impact requirement).

Chemistry %C 0.35, %Si 2.0, %Mn 0.7, %S 0.035, %P 0.035, % Cr 2.3, %Mo 0.3. Hardness requirement, 350 to 400HB.

None of our normal steel production is produced with 2.00% Silicon. What effect will this level of silicon have on a typical anneal or normalize heat treatment cycle.

What effect will this silicon level have on an oil quench and temper cycle requiring the BHN requirement. 

Comment on the above will be much appreciated.

regards, Brian Seviour.