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DIN 1691 for Grey Iron

DIN 1691 - 1985 is an old standard for grey iron, however, many designers are still using it as the standard for the tensile strength and hardness of grey cast iron. So, herein, we listed the main content of this standard for your reference.

Grade and mechanical properties of Grey Iron

Grade

Material No
W-Nr.

Thickness
/mm

Tensile strength

The forecasting mechanical properties of casting

Cast integral specimen
σb/Mpa

Attached specimen barσb≥/Mpa

Tensile strength
σb≥/Mpa

Hardness
HBS

GG-10

0.6010

5~40

≥100

-

-

-

GG-15

0.6015

2.5~5
5~10
10~20
20~40
40~80
80~150
150~300

150~250

-
-
-
120
110
100
90

180
155
130
110
95
80
-

270
245
225
205
-
-
-

GG-20

0.6020

2.5~5
5~10
10~20
20~40
40~80
80~150
150~300

200~300

-
-
-
170
150
140
130

230
205
180
155
130
115
-

285
270
250
235
-
-
-

GG-25

0.6025

5~10
10~20
20~40
40~80
80~150
150~300

250~350

-
-
210
190
170
1660

250
225
195
170
155
-

285
265
250
-
-
-

GG-30

0.6030

10~20
20~40
40~80
80~150
150~300

300~400

-
250
220
210
190

270
240
210
195
-

285
265
-
-
-

GG-35

0.6035

10~20
20~40
40~80
80~150
150~300

350~450

-
290
260
230
210

315
280
250
225
-

280
275
-
-
-

 
The guaranteed value of hardness of gray castings on arranged position

Hardness grade

Material No
W-Nr.

Thickness /mm

Hardness HBS30

GG-150HBS

0.6012

2.5
5
10
20
40

5
10
20
40
80

-
-
-
-
-

210
185
170
160
150

GG-170HBS

0.6017

2.5
5
10
20
40

5
10
20
40
80

170
140
125
110
100

260
225
205
185
170

GG-190HBS

0.6022

4
5
10
20
40

5
10
20
40
80

190
170
150
135
120

275
260
230
210
190

GG-220HBS

0.6027

5
10
20
40

5
10
20
40
80

200
180
160
145

275
250
235
220

GG-240HBS

0.6032

10
20
40

10
20
40
80

200
180
165

275
255
240

GG-260HBS

0.6037

20
40

20
40
80

200
185

275
260

 

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