Austenitic Ductile Iron Specifications

Austenitic Ductile Iron Specification

		Material designation; symbol and (number)
		EN-GJS-800-8 (EN-JS1100)	EN-GJS-1000-5 (EN-JS1110)	EN-GJS-1200-2 (EN-JS1120)	EN-GJS-1400-1 (EN-JS1130)
Characteristic	Unit	Minimum values for properties 1) (normative)
Tensile Strength Rm	N/mm2	800	1000	1200	1400
0.2% proof stress R po.2	N/mm2	500	700	850	110
Elongation A	%	8	5	2	1
Impact resistance values Charpy notched, at (23±5) ¡C	J	10	2) mean value of 3 tests
		9	3) individual value ±
		Minimum values for properties 1) (informative)
Compression strength	N/mm2	1300	1600	1900	2200
0.2% proof stress	N/mm2	620	770	1040	1220
Shear strength	N/mm2	720	900	1080	1260
Torsional strength	N/mm2	720	900	1080	1260
0.2% proof stress	N/mm2	350	490	590	770
Impact resistance values Charpy notched, at (23±5) ¡C	J	100	80	60	30
Fracture tougness K	Mpa-m 1/2	62	58	54	50
Fatigue limit (Wšhler)(rotating bending) unnotched (dia. 10.6mm)	N/mm2	375	425	450	375
Fatigue limit (Wšhler) (rotating bending) notched 4) (dia. 10.6mm)	N/mm2	225	260	280	275
		Typical Values
Brinell hardness	HN	260 to 320	300 to 360	340 to 440	380 to 480
Modulus of elasticity E	kN/mm2	170	168	167	165
Poisson's ratio v	-	0.27	0.27	0.27	0.27
Shear modulus	kN/mm2	65	64	63	62
Density p	kg/dm3	7.1	7.1	7.1	7.1
Linear expansion coefficient a	mm/(m.K)	14.6	14.3	14	13.8
Thermal conductivity	W/(m.K)	22.1	21.8	21.5	21.2

Note 1: The mimimum values can be obtained on wall thickness up to 50mm. For heavier sections agreement between purchaser and manufacturer is recommended.

Note 4: Notched after heat-treatment.

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