Cast iron with spheroidal graphite

Designation in accordance with DIN EN 1563			EN-GJS-350-22-LT	EN-GJS-400-18-LT	EN-GJS-400-15	EN-GJS-450-10		EN-GJS-500-7	EN-GJS-600-3	EN-GJS-700-2	EN-GJS-800-2		EN-GJS-450-18	EN-GJS-500-14	EN-GJS-600-10
Reference analysis	C		3.50 – 3.70	3.50 – 3.70	3.50 – 3.70	3.20 – 3.50		3.50 – 3.70	3.50 – 3.70	3.50 – 3.70	3.50 – 3.70		3.20 – 3.50	3.00 – 3.30	2.80 – 3.10
for medium wall thicknesses	Si		1.80 – 2.00	2.30 – 2.60	2.30 – 2.60	2.80 – 3.20		2.30 – 2.60	2.30 – 2.60	2.30 – 2.60	2.30 – 2.60		2.80 – 3.20	3.40 – 3.80	3.90 – 4.30
	Mn		max. 0.2	max. 0.25	max. 0.25	max. 0.40		max. 0.40	max. 0.40	max. 0.40	max. 0.40		max. 0.50	max. 0.50	max. 0.50
	Mo		-	-	-	-		-	-	-	-		-	-	-
	Ni		-	-	-	-		-	-	-	-		-	-	-
Microstructure			Ferrite 100:1	Ferrite 100:1	Ferrite and pearlite 100:1	Ferrite and pearlite 100:1		Ferrite and pearlite 100:1	Pearlite and ferrite 100:1	Pearlite and ferrite 100:1	Pearlite 100:1		Ferrite 100:1 (solid-solution hardening)	Ferrite 100:1 (solid-solution hardening)	Ferrite 100:1 (solid-solution hardening)
Mechanical properties 1)
Tensile strength	Rm	MPa	350	400	400	450		500	600	700	800		450	500	600
0.2 yield strength	Rp0.2	MPa	220	240	250	310		320	370	420	480		350	400	470
Elongation at fracture	A5	%	22	18	15	10		7	3	2	2		18	14	10
Elastic modulus	E	GPa	169	169	169	169		169	174	176	176		170	170	170
Notched bar impact work2)	at +23 °C (RT)	Joules	17	14	-	-		-	-	-	-		8	3	-
	at -20 °C (LT)	Joules	-	12	-	-		-	-	-	-		4	3	-
	at -40 °C (LT)	Joules	12	-	-	-		-	-	-	-		3	2	-
Brinell hardness	BHN		< 160	130 – 175	135 – 180	160 – 210		170 – 230	190 – 270	225 – 305	245 – 335		170 – 200	185 – 215	200 – 230
Fatigue limit3)		MPa	180	195	-	210		224	248	280	304		210	225	275
Fatigue limit4)		MPa	114	122	-	128		134	149	168	182		130	140	165
Technological properties
Usage temperature5)			< 500	< 500	< 500	< 500		< 500	< 500	< 500	< 500		< 500	< 500	< 500
Machinability			Excellent	Excellent	Excellent	Good		Good	Good	Average	Average		Good	Good	Good
Wear resistance			Low	Low	Low	Low		Good	Good	Excellent	Excellent		Low	Low	Low
Induction or flame-hardening capacity			Low	Low	Low	Low		Low	Good	Excellent	Excellent		Low	Low	Low
Nitriding capacity			Good	Good	Good	Good		Good	Good	Excellent	Excellent		Good	Good	Good
Weldability			Only weldable using special electrodes					Only weldable using special electrodes					Only weldable using special electrodes
Physical properties
Density	ρ	kg/dm3	7.10	7.10	7.20	7.10		7.10	7.20	7.20	7.20		7.1	7.0	7.0
Thermal conductivity	λ at 300 °C	W/(K*m)	36.2	36.2	36.2	36.2		35.2	35.2	31.1	31.1		-	-	-
Thermal expansion coefficient	α up to 400 °C	10-6/K	12.5	12.5	12.5	12.5		12.5	12.5	12.5	12.5		-	-	-
			Special materials or grades not listed available on request

¹⁾ The mechanical properties of cast iron with spheroidal graphite in integrally cast Y-shaped test specimens (minimum values)
²⁾ Mean value of three ISO-V test specimens (DIN 50115)
³⁾ Wöhler rotating bending fatigue test, unnotched test specimen
⁴⁾ Wöhler rotating bending fatigue test, notched test specimen
⁵⁾ Literature values