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  GB9439 China Gray Iron Castings

 


This standard is applicable to sand-casting grey iron castings or grey iron castings whose thermal conduction is equivalent to sand-casting grey iron castings. This standard can also be referred by grey iron castings of other molds.

GB9439-88 Gray Iron Castings Mechanical Properties Form

Number

Tensile strength for reference

mechanical properties of attached test coupon (block)

wall thickness of casting/mm

Tensile strength

σb≥/Mpa

 

wall thickness of casting / Mm

Tensile strength σb≥/Mpa

 

attached test coupon

attached to test block casting

Castings

(reference)

Ø30mm

Ø50mm

R15mm

R25mm

 

HT100

2.5

10

130

 

 

 

 

 

 

 

10

20

100

 

 

 

 

 

 

 

20

30

90

 

 

 

 

 

 

 

30

50

80

 

 

 

 

 

 

 

 

HT150

2.5

10

175

20

40

130

120

120

 

165

10

20

145

40

80

115

115

110

 

105

20

30

130

80

150

 

105

 

100

90

30

50

120

150

300

 

100

 

90

80

 

HT200

2.5

10

220

20

40

180

155

170

 

165

10

20

195

40

80

160

155

150

 

145

20

30

170

80

150

 

145

 

140

130

30

50

160

150

300

 

135

 

130

120

 

HT250

4.0

10

270

20

40

220

 

210

 

205

10

20

240

40

80

200

190

190

 

180

20

30

220

80

150

 

180

 

170

165

30

50

200

150

300

 

165

 

160

150

 

HT300

10

20

290

20

40

260

 

250

 

245

20

30

250

40

80

235

230

225

 

215

30

50

230

80

150

 

210

 

200

195

 

 

 

150

300

 

195

 

185

180

 

HT350

10

20

290

20

40

300

 

290

 

285

20

30

250

40

80

270

265

260

 

255

30

50

230

80

150

 

240

 

230

225

 

 

 

150

300

 

215

 

210

205

 



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