HastelloyC-4、UNS N06455

Hastelloy C4 alloy

Hastelloy C-4 is an austenitic low carbon nickel-molybdenum-chromium alloy. The main difference between Hastelloy C-4 and other early-developed alloys of similar chemical composition is the low carbon, silicon, iron, and tungsten content. Such a chemical composition makes it exhibit excellent stability at 650-1040 ° C, improves the ability to resist intergranular corrosion, and can avoid edge line corrosion sensitivity and weld heat affected zone corrosion under appropriate manufacturing conditions.

Hastelloy C4 material properties

● Excellent corrosion resistance to most corrosive media, especially under reduced conditions.

● Excellent local corrosion resistance in halides.

Hastelloy C4 chemical composition

%	Ni	Cr	C	Mn	Si	Mo	P	S
Min.	margin	14.0				14.0
Max.		18.0	0.015	1.0	0.08	17.0	0.04	0.03

Hastelloy C4 physical properties

density

ρ = 8.6g / cm3

Hastelloy C4 melting temperature range

1335 ～ 1380 ℃

Hastelloy C4 application areas

It has been widely used in most chemical fields and high temperature environments.

Typical application areas:

● Fume desulfurization system

● Pickling and acid regeneration plant

● Production of acetic acid and agricultural chemicals

● Titanium dioxide production (chlorine method)

● Electrolytic plating

 

Special alloy materials commonly used in the chemical industry:

Stainless steel: 253MA, 316L, 353MA, 654SMO, 904L, etc.

Nickel-based alloys: Alloy 31, Alloy 59, Hastelloy B, Hastelloy C, Hastelloy C-276, etc.

Corrosion-resistant alloys: NS112, NS322, NS333, NS335