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 nameEN-GJS-400-18-LT400-18400-15500-7600-3700-2800-2
Number5.31035.31055.31065.32005.32015.33005.3301
Predominant Matrix95-100% Ferrite40-60% Perlite70-85% Perlite95-100%     Perlite100% Perlite
Further Mechanical Properties
Measured on samples prepared from cast prototypes by mechanical working
Modulus of ElasticityEGN/m²169169169169174176176
Fatigue Strength (Wöhler)2)N/mm²195195200224248280304
Fracture ToughnessKICMpa * m²30303025201514
Physical Properties
Densityρkg/dm³7.17.17.17.17.27.27.2
Specific Heat Capacity
20 °C–550 °C
J/(kg*K)515515515515515515515
Thermal Expansion Coefficient
20 °C–400 °C
μm/(m*K)12,512.512.512.512.512.512.5
Spec. Thermal Conductivity at 330 °CW/(K*m)36.236.236.235.235.231.131.1
Electric ResistanceμΩ*m0.50.50.50.510.530.540.54
Technological Properties       (++ very suitable   + suitable  ● less suitable   – not suitable)
Processing+++++++++
Wear Resistance+++
Surface Hardening+++++
Weldability++++
Corrosion Resistance
Comparable Kinds of Norms
ISO 1083Type400-18L400-18400-15500-7600-3700-2800-2
ASTM A 536 (USA)Grade60-40-1870-50-0580-60-03100-70-03110-80-03

Further Mechanical Properties:

MaterialAuthoritative Wall ThicknessRp 0.2 Elongation Limit – MPaRm Longitudinal Strengtht – MPaA Elongation – %HBNotch Impact Energy – J
Medium/Single value
1–30 mm24040018130–17512 / 9
400-18-LT31–60 mm23038015130–17512 /9
61–200 mm22036012130–17510 / 7
1–30 mm25040018130–175
400-1831–60 mm25039015130–175
61–200 mm24037012130–175
1–30 mm25040015135–180
400-1531–60 mm25039014135–180
61–200 mm24037011135–180
1–30 mm3205007170–230
500-731–60 mm3004507170–230
61–200 mm2904205150–230
1–30 mm3706003190–270
600-331–60 mm3606002190–270
61–200 mm3405501180–270
1–30 mm4207002225–305
700-231–60 mm4007002225–305
61–200 mm3806501210–305
1–30 mm4808002245–335
800-231–60 mmiis between manufacturer and buyer to agree upon245-335
61–200 mmis between manufacturer and buyer to agree upon240-335

Inquiry

Do you need further information?

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




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