 Maao Industry Area,Jiangbei district,Wenzhou City, Zhejiang Province,China
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Hastelloy C4

Hastelloy C-4 under high temperature with excellent thermal stability and toughness, for under the condition of high temperature should stress corrosion cracking and oxidation atmosphere with good resistance. Suitable all types heat Mineral acid, chlorine containing medium, acetic acid, acetic anhydride, seawater and brine solution and other corrosive substances.

Chemical Composition:

Grade

%

Ni

Cr

Mo

Fe

C

Hastelloy c-4

Min

65

14

14

0


Max


18

17

3

0.015

Mn

Co

S

P

Ti








0.02

2

0.03

0.04

0.7



Standard of execution:

Form

                    ASTM

Rod

                    B 574

Plate, sheet and strip

                    B 575

Seamless pipe and tube

                    B 622

Welded pipe

                    B 619, B 775

Welded tube

                    B 626, B 751

Welding fitting

                    B 366

Forged or rolled pipe flange and forged fitting

                    B 462

Billet and bar for reforging

                    B 472

Forging

                    B 564


Characteristic as below:
Excellent corrosion resistance in reducing environments
Exceptional resistance to strong solutions of oxidizing salts, such as ferric and cupric chlorides
High nickel and molybdenum contents providing good corrosion resistance in reducing environments
Low carbon content which minimizes grain-boundary carbide precipitation during welding to maintain resistance to corrosion in heat-affected zones of welded joints
Resistance to localized corrosion such as pitting and stress-corrosion cracking
One of few materials to withstand the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide

Application field:
Digesters and bleach plants in the paper industry.
Components exposed to sour gas.
Equipment for flue-gas desulfurisation plants.
Evaporators, heat exchangers, filters and mixers used in sulfuric acid environments.
Sulfuric acid reactors.
Organic chloride process equipment.
Equipment for processes utilizing halide or acid catalysts.


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