ss390

SAE

Application

S-780 S-660

Knock-out or descaling large cast iron, cast steel, iron pipe, forged piece and heat treatment piece.

S-550 S-460

Knock-out, descaling, peening and shaping of medium-to-large cast iron, cast steel, forged piece, heat treatment piece, steel plate and pipe.

S-390 S-330

Knock-out, descaling, peening and shaping of small-to-medium cast iron, ductile iron, cast parts, heat treatment piece, steel plate, sections, steel pipe, structural parts, chain and non-ferrous metals.

S-280

Blasting small cast iron, cast part, heat treatment piece, cast aluminum, cast steel plate and cast copper alloy before gold-plating process to increase elasticity and toughness.

Products

Cast steel shot

Chemical composition

C

0.80-1.10%

Mn

0.60-1.20%

Si

0.50-1.20%

P

≤0.03%

S

≤0.03%

Hardness

Normal:40～50HRC (377～509HV)

Special:52～56HRC (543～620HV)

Special:56～60HRC (620～713HV)

Hardness Deviation

Max deviation±3.0 HRC or±40HV

Density

≥7.50g/cm3

Durability

 2200 to 2500 times

Microstructure

Homogeneous tempered martensite or troostite