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
Number
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	K_IC	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
		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
		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
		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

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Dossmann GmbH
Eisengiesserei und Modellbau

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

Cast Iron Spherulitic Graphite

Dossmann Factory standard based on DIN-EN-1563:

Further Mechanical Properties:

Inquiry

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