Inconel

Chemical Compositions

Inconel	Element, proportion by mass (%)
	Ni	Cr	Fe	Mo	Nb & Ta	Co	Mn	Cu	Al	Ti	Si	C	S	P	B
600[11]	≥72.0[a]	14.0–17.0	6.0–10.0			—	≤1.0	≤0.5			≤0.5	≤0.15	≤0.015
617[18]	44.2–61.0	20.0–24.0	≤3.0	8.0–10.0		10.0–15.0	≤0.5	≤0.5	0.8–1.5	≤0.6	≤0.5	0.05–0.15	≤0.015	≤0.015	≤0.006
625[19]	≥58.0	20.0–23.0	≤5.0	8.0–10.0	3.15–4.15	≤1.0	≤0.5		≤0.4	≤0.4	≤0.5	≤0.1	≤0.015	≤0.015
690[20]	≥58	27–31	7–11				≤0.50	≤0.50			≤0.50	≤0.05	≤0.015
Nuclear grade 690[20]	≥58	28–31	7–11			≤0.10	≤0.50	≤0.50			≤0.50	≤0.04	≤0.015
718[2]	50.0–55.0	17.0–21.0	Balance	2.8–3.3	4.75–5.5	≤1.0	≤0.35	≤0.3	0.2–0.8	0.65–1.15	≤0.35	≤0.08	≤0.015	≤0.015	≤0.006
X-750[21]	≥70.0	14.0–17.0	5.0–9.0		0.7–1.2	≤1.0	≤1.0	≤0.5	0.4–1.0	2.25–2.75	≤0.5