Hastealloy

Hastelloy is a family of corrosion-resistant metal alloys primarily composed of nickel, with elements such as molybdenum, chromium, and sometimes iron and cobalt added to enhance its resistance to various corrosive environments. Known for its excellent resistance to pitting, stress corrosion cracking, and high-temperature oxidation, Hastelloy is used in some of the most demanding applications, particularly in chemical processing, aerospace, and power generation industries.

Specification	ASTM B366, ASTM SB 366, ASTM B564, ASME SB564
Dimensions	ANSI/ASME B16.9, B16.28, MSS-SP-43
Size	1/2″ NB to 12″ NB
Thickness	Sch 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, Sch XXS
Types	Seamless / ERW / Welded / Fabricated
Grades	Hastelloy C22 (UNS No. N06022), Hastelloy B2 (UNS No. N10665), Hastelloy C-4 (UNS No. N06455)

Alloy Name	UNS	WNR (DIN)
B-2	N10665	DIN 2.4617
C	N10002	–
C-4	N06455	DIN 2.4610
C-276	N10276	DIN 2.4819
G	N06007	–
G-3	N06985	DIN 2.4619
N	N10003	–
S	N06635	–
W	N10004	–
X	N06002	DIN 2.4665

Alloy Type	Cr%	C%	Co%	W%	Mo%	V%	Al%	Ti%	Nb%	Fe%	Cu%	Ni%
B	0.6	0.1	1.25	–	28	0.3	–	–	–	5.5	–	rest / bal
B2	1	0.02	1	–	26.0–30.0	–	–	–	–	2	–	rest / bal
C276	14.0–16.5	0.02	2.5	3.0–4.5	15.0–17.0	0.35	–	–	–	4.0–7.0	–	rest / bal
X	22	0.1	1.5	0.6	9	–	–	18.5	–	–	–	rest / bal
C	16	0.07	1.25	40	17	0.3	–	–	–	5.75	–	rest / bal
C4	14.0–18.0	0.015	2	–	14.0–17.0	–	–	0.70	–	3	–	rest / bal
N	7	0.06	0.25	0.2	16.5	–	–	–	–	3	0.1	rest / bal
S	15.5	0.02	2	1	14.5	0.6	0.2	–	–	3	–	rest / bal
F	22	0.02	1.25	0.5	6.5	–	–	–	2.1	21	–	rest / bal
G	21.0–23.5	0.05	2.5	1	5.5–7.5	–	–	–	1.7–2.5	18.0–21.0	1.5–2.5	rest / bal
G2	23.0–26.0	0.03	–	–	5.0–7.0	–	–	0.70–1.50	–	rest / bal	0.70–1.20	47.0–52.0
W	5	0.06	1.25	–	24.5	–	–	–	–	5.5	–	rest / bal