HASTELLOY ni aloi ya Nickel-chromium-molybdenum ambayo inachukuliwa kuwa aloi inayostahimili kutu inayopatikana.
Aloi hii ni sugu kwa uundaji wa mvua za mpaka wa nafaka katika eneo lililoathiriwa na joto la weld, hivyo kuifanya kufaa kwa matumizi mengi ya mchakato wa kemikali katika hali iliyochochewa. Fomu ya Hastelloy: Bomba / Tube (iliyo svetsade na isiyo imefumwa), Bamba /Karatasi, Baa, Waya, Vifaa
Waya: 0.01-10mm
Ukanda: 0.05 * 5.0-5.0 * 250mm
Upau: φ4-50mm; Urefu 2000-5000mm
Bomba: φ6-273mm;δ1-30mm; Urefu 1000-8000mm
Laha: δ 0.8-36mm; Upana 650-2000mm; Urefu 800-4500mm

Daraja		C276	C22	C4	B2	B3	N
Kemikali Muundo (%)	C	≤0.01	≤0.015	≤0.015	≤0.02	≤0.01	0.04-0.08
	Mn	≤1	≤0.5	≤1	≤1	≤3	≤1
	Fe	4-7	2-6	≤3	≤2	≤1.5	≤5
	P	≤0.04	≤0.02	≤0.04	≤0.04	-	≤0.015
	S	≤0.03	≤0.02	≤0.03	≤0.03	-	≤0.02
	Si	≤0.08	≤0.08	≤0.08	≤0.1	≤0.1	≤1
	Ni	pumzika	pumzika	pumzika	pumzika	≥65	pumzika
	Co	≤2.5	≤2.5	≤2	≤1	≤3	≤0.2
	Ti+Cu	-	-	≤0.7	-	≤0.4	≤0.35
	Al+Ti	-	-	-	-	≤0.5	≤0.5
	Cr	14.5-16.5	20-22.5	14-18	≤1	≤1.5	6-8
	Mo	15-17	12.5-14.5	14-17	26-30	≤28.5	15-18
	B	-	-	-	-	-	≤0.01
	W	3-4.5	2.5-3.5	-	-	≤3	≤0.5
	V	≤0.35	≤0.35	-	0.2-0.4	-	≤0.5