Nickel Alloy B-2: Defying Corrosion, Delivering Reliability

Update:2025 02,Apr

Product Introduction

B-2 refers to an improved Hastelloy alloy with the specific grade number N10665.It is a model in the Hastelloy series used to improve the corrosion resistance and machinability of materials.The chemical composition of the B-2 alloy consists mainly of the elements of nickel (Ni) and molybdenum (Mo), with a specific composition of 00Ni70Mo28.

Chemical Composition

	%	Ni	Mo	Fe	Cr	Co	C	Mn	V	Si	P	S
ALLOY B	MIN	residual content	26	4	-	-	-	-	0.2	-	-	-
ALLOY B	MAX	residual content	30	6	1.0	2.5	0.05	1.0	0.4	1.0	0.04	0.03
ALLOY B-2	MIN	residual content	26	0	0.04	-	-	-	-	-	-	-
ALLOY B-2	MAX	residual content	30	≤2.0	0.07	1.0	0.01	1.0	-	0.01	0.02	0.03

Physical Properties

density	melting point	tensile strength	yield strength	elongation
9.24g/cm³	1330-1380℃	Rm N/mm²	Rp_0.2N/mm²	A5%
9.24g/cm³	1330-1380℃	≥760	≥350	≥40

Executive Standard

Products	ASTM Standard	ASME Standards
Sheets, plates, strips	B333	SB333
seamless pipes	B622	SB622
welded pipes	B619、B626	SB619、SB626
Bar Stock and Pancake Forging	B335	SB335
Forged Stock	B564	SB564

Feature

1、Control the iron and chromium elements in the lowest content to prevent the generation of β-phase NI4MO.

2、Excellent corrosion resistance to reducing environments.

3、excellent resistance to moderate concentrations of sulfuric acid and many non-oxidising acid corrosion.

4、 very good resistance to chloride ion reduction stress corrosion cracking (SCC).

5、excellent resistance to corrosion of various organic acids.

Application

Alloy ALLOY B-2 is used in a wide range of applications in the chemical, petroleum, and pharmaceutical industries, especially where resistance to high temperatures, high pressures, and strong corrosive environments is required.The corrosion resistance of alloy B-2 allows it to excel in harsh industrial environments, effectively extending the life of equipment and reducing maintenance costs.With the advancement of material science, Hastelloy has undergone many improvements, and B-2 is one of the major developments, representing the typical representative of the second generation of Hastelloy.