Brinell hardness of castings made of gray cast iron

Hardness grades

Casting wall thickness (mm)

The Brinell hardness range of casting (HBW)

> 

Min

Max

H155

5

10

/

185

10

20

/

170

20

40

/

160

40

80

/

155

H175

5

10

140

225

10

20

125

205

20

40

110

185

40

80

100

175

H195

4

5

190

275

5

10

170

260

10

20

150

230

20

40

125

210

40

80

120

195

H215

5

10

200

275

10

20

180

255

20

40

160

235

40

80

145

215

 

H235

10

20

200

275

20

40

180

255

40

80

165

235

H255

20

40

200

275

40

80

185

255