Cast Iron Spherulitic Graphite

Spherulitic graphite offers qualities similar to steel, which are generated with a special metallurgic treatment. Thanks to the graphite contained in the spheres, chip interruption can be achieved, and the tool wear can be lowered despite relatively high strength. In this way, the cast iron spherulitic graphite (ductile iron, nodular cast iron) helps to increase the cutting speed, shorten machining times and thus reduce costs.

We process cast iron spherulitic graphite in the following qualities:

Dossmann Factory standard based on DIN-EN-1563:
Material name EN-GJS- 400-18-LT 400-18 400-15 500-7 600-3 700-2 800-2
Number 5.3103 5.3105 5.3106 5.3200 5.3201 5.3300 5.3301
Predominant Matrix 95-100% Ferrite 40-60% Perlite 70-85% Perlite 95-100%     Perlite 100% Perlite
Further Mechanical Properties
Measured on samples prepared from cast prototypes by mechanical working
Modulus of Elasticity E GN/m² 169 169 169 169 174 176 176
Fatigue Strength (Wöhler)2) N/mm² 195 195 200 224 248 280 304
Fracture Toughness KIC Mpa * m² 30 30 30 25 20 15 14
Physical Properties
Density ρ kg/dm³ 7.1 7.1 7.1 7.1 7.2 7.2 7.2
Specific Heat Capacity
20 °C–550 °C
J/(kg*K) 515 515 515 515 515 515 515
Thermal Expansion Coefficient
20 °C–400 °C
μm/(m*K) 12,5 12.5 12.5 12.5 12.5 12.5 12.5
Spec. Thermal Conductivity at 330 °C W/(K*m) 36.2 36.2 36.2 35.2 35.2 31.1 31.1
Electric Resistance μΩ*m 0.5 0.5 0.5 0.51 0.53 0.54 0.54
Technological Properties       (++ very suitable   + suitable  ● less suitable   – not suitable)
Processing ++ ++ ++ + + +
Wear Resistance + ++
Surface Hardening + ++ ++
Weldability + + + +
Corrosion Resistance
Comparable Kinds of Norms
ISO 1083 Type 400-18L 400-18 400-15 500-7 600-3 700-2 800-2
ASTM A 536 (USA) Grade 60-40-18 70-50-05 80-60-03 100-70-03 110-80-03

Further Mechanical Properties:

Material Authoritative Wall Thickness Rp 0.2 Elongation Limit – MPa Rm Longitudinal Strengtht – MPa A Elongation – % HB Notch Impact Energy – J
Medium/Single value
1–30 mm 240 400 18 130–175 12 / 9
400-18-LT 31–60 mm 230 380 15 130–175 12 /9
61–200 mm 220 360 12 130–175 10 / 7
1–30 mm 250 400 18 130–175
400-18 31–60 mm 250 390 15 130–175
61–200 mm 240 370 12 130–175
1–30 mm 250 400 15 135–180
400-15 31–60 mm 250 390 14 135–180
61–200 mm 240 370 11 135–180
1–30 mm 320 500 7 170–230
500-7 31–60 mm 300 450 7 170–230
61–200 mm 290 420 5 150–230
1–30 mm 370 600 3 190–270
600-3 31–60 mm 360 600 2 190–270
61–200 mm 340 550 1 180–270
1–30 mm 420 700 2 225–305
700-2 31–60 mm 400 700 2 225–305
61–200 mm 380 650 1 210–305
1–30 mm 480 800 2 245–335
800-2 31–60 mm iis between manufacturer and buyer to agree upon 245-335
61–200 mm is between manufacturer and buyer to agree upon 240-335

Inquiry

Do you need further information?

DOSSMANN GmbH
Amorbacher Straße 43
74731 Wallduern-Rippberg
Telephone +49 6286 18-0
Fax +49 6286 18-20




Please call me back

* required field


I agree that the data given by me for the processing and answering of my request are encrypted electronically, collected and stored. I have read the privacy policy. This agreement can be revoked at any time.*

Give us a call!

Tel: +49 6286 18-0
Or please write us:

* required

I agree that the data given by me for the processing and answering of my request are encrypted electronically, collected and stored. I have read the privacy policy. This agreement can be revoked at any time.*