Product range

Our foundry is renowned far beyond the borders of the country as a specialist for spheroidal graphite iron castings. We manufacture high quality, sophisticated castings from this material with state-of-the-art production facilities. The spheroidal graphite iron casting process is a process for cast iron containing nodular particles of graphite and is a substitute for lower quality grey cast iron. Thanks to spheroidal graphite cast iron we supply better quality at better prices – compared to the more common grey iron casting process, which we deliberately refuse to use.

The foundry belonging to the Jürgens company manufactures castings made of spheroidal graphite iron in different shapes and sizes – in unit weights of between 1 kg and 1,000 kg. So we are absolutely sure of meeting your individual requirements to the full – whatever type of casting you need.

Moulding machines:
Large moulding machine flask size:    1500 x 1200 x 400 / 450 mm
Small moulding machine flask size:      620 x   620 x 220 / 270 mm

Spheroidal graphite cast iron materials*:
GGG 35.3 - 40.3 - 40 - 50 - 60 - 70 - 80

Bainitic cast iron with spheroidal graphite, JADI materials: 
GJS-800-8 / GJS-1000-5 / GJS-1200-2 / GJS 1400-1

* see details for new EN designation

 

Cast iron with spheroidal graphite with the mechanical properties

Material designation
Abbr. as per Abbr. as per Number as per
DIN 1693-1 DIN EN 1563
Separately cast test pieces
Tensile strength
Rm (N/mm2)
min.
0,2 % Proof stress
Rp0,2 (N/mm2) min.
Elongation at fracture
A % min.
GGG-35.3 EN-GJS-350-22-LT EN-JS1015 350 220 22
- EN-GJS-350-22-RT EN-JS1014 350 220 22
- EN-GJS-350-22 EN-JS1010 350 220 22
GGG-40.3 EN-GJS-400-18-LT EN-JS1025 400 240 18
- EN-GJS-400-18-RT EN-JS1024 400 250 18
- EN-GJS-400-18 EN-JS1020 400 250 18
GGG-40 EN-GJS-400-15 EN-JS1030 400 250 15
- EN-GJS-450-10 EN-JS1040 450 310 10
GGG-50 EN-GJS-500-7 EN-JS1050 500 320 7
GGG-60 EN-GJS-600-3 EN-JS1060 600 370 3
GGG-70 EN-GJS-700-2 EN-JS1070 700 420 2
GGG-80 EN-GJS-800-2 EN-JS1080 800 480 2
- EN-GJS-900-2 EN-JS1090 900 600 2
  LT = for low temperatures
RT = for room temperatures

Bainitic cast iron with nodular graphite

Type according to
ASTM DIN EN
Tensile strength
Rm(N/mm²)
0,2% Proof stress
Rp0,2 (N/mm²)
Elongation at facture
A5 (%)
Hardness 1)
HB
Impact resistance 2)
A (J)
- GJS-800-8 800 500 8 260 to 320 -
Grade 1 - 850 550 10 269 to 321 100
- GJS-1000-5 1000 700 5 300 to 360 -
Grade 2 - 1050 700 7 302 to 363 80
- GJS-1200-2 1200 850 2 340 to 440 -
Grade 3 - 1200 850 4 341 to 444 60
- GJS-1400-1 1400 1100 1 380 to 480 -
Grade 4 - 1400 1100 1 388 to 477 35
Grade 5 - 1600 1300 - 444 to 555 -

1) Guidance values
2) unnotched Charpy samples, at room temperature

ZTensile strength properties of lamellar graphite cast iron

With the Jürgens Foundry, you opt for the optimal material for every future project: Our credo of “Inventions in Iron” now applies equally to the grey iron segment. That means you, the customer, will now receive even more services from one source. At the same time, you will benefit from our decades of experience, the latest technologies, and the leading knowhow of our team.

Material designation
Symbol Number
technical thickness t/mm
> <
Zugfestigkeita
values that must be kept
EN-GJL-100 5.1100 5 40 100
EN-GJL-150 5.1200 2,5 b
50
100
50
100
200
150
130
110
EN-GJL-200 5.1300 2,5 b
50
100
50
100
200
200
180
160
EN-GJL-250 5.1301 5 b
50
100
50
100
200
250
220
200
EN-GJL-300 5.1302 10 b
50
100
50
100
200
300
260
240
EN-GJL-350 5.1303 2,5 b
50
100
50
100
200
350
310
280

NOTE 1: The material name is independent of the type of cast sample.
NOTE 2: The most suitable material for high damping capacity and temperature conductivity is EN-GJL-100 (5.1100).
NOTE 3: The figures in bold represent the minimum tensile strength applicable to the type abbreviation. The values pertain to the diameter of a cast piece in its raw cast state, corresponding to the applicable area of the determining wall thickness
NOTE 4: In the case of determining wall thicknesses greater than 200 mm, the manufacturer and purchaser must agree on the type and size of the sample piece and the minimum values to be adhered to.
a If the tensile strength is defined as a distinguishing characteristic, then the type of sample piece (see 8.2) must also be specified in the order. If it is not specified, then it is at the manufacturer’s discretion to specify the type of sample piece.
b This value is included as the lower limit in the area of the determining wall thickness.