Hastelloy C-276 similar grade

China
GB
America
UNS
Germany
SEW VDIUV
U.K
BS
Hastelloy C-276 NS3304 N10276 W.Nr.2.4819
NiMo16Cr15W
NC17D

Hastelloy C-276 physical properties

Density 8.9g/cm3
Melting point 1325-1370℃

 

Hastelloy C276’s minimum mechanical properties at room temperature

Alloy tensile strength Yield Strength Elongation
Rm N/mm2 RP0.2 N/mm2 A5 %
Hastelloy C276 690 283 40

Category:

Hastelloy C-276 Nickel Based Superalloy

Hastelloy C-276 is a nickel-chromium-molybdenum alloy containing tungsten. It has a very low silicon-carbon content and is considered a universal anti-corrosion alloy. Hastelloy C-276 has excellent corrosion resistance to most corrosive media in both oxidation and reduction atmospheres, and has excellent resistance to pitting, crevice corrosion and stress corrosion. The higher content of molybdenum and chromium makes the alloy resistant to chloride ion corrosion, and the tungsten element further improves the corrosion resistance.

At the same time, Hastelloy C-276 alloy is one of the only materials that are resistant to corrosion by humid chlorine, hypochlorite and chlorine dioxide solutions, and has significant effects on high-concentration chloride solutions such as ferric chloride and copper chloride corrosion resistance. It is suitable for sulfuric acid solutions of various concentrations and is one of the few materials that can be applied to hot concentrated sulfuric acid solutions.

Hastelloy C276 alloy has been widely used in the chemical and petrochemical fields, such as in components and catalytic systems that contact chloride-containing organics. This material is especially suitable for use in high temperature, mixed with impurities of inorganic and organic acids (such as formic acid and acetic acid), and seawater corrosive environments.

Hastelloy C-276 Chemical Composition:

Mo Cr Fe W Co Mn C V P S Si
15.0-17.0 14.5-16.5 4.0-7.0 3.0-4.5 2.5 max 1.0 max 0.01 max 0.35 max 0.04 max 0.03 max 0.08 max

Hastelloy C-276 Mechanical Properties:

Product Form Tensile (ksi) 0.2% Yield (ksi) Elongation %
Bar 110.0 52.6 62
Plate 107.4 50.3 67
Sheet 115.5 54.6 60
Tube & Pipe 105.4 45.4 70

Hastelloy C-276 Corrosion Resistance Properties:

Hastelloy C-276 is balanced to provide excellent corrosion resistance to a variety of chemical process environments. This alloy has provided resistance to hot contaminated mineral acids, organic and inorganic chloride contaminated media, hypochlorite, chlorine dioxide solutions, formic and acetc acids, acetic anhydride, sea water and brine solutions.

Typical General Corrosion Rates*

Environment Concentration
(% by weight)
Test
Temperature
Penetration Rate (per year)
°F °C Unwelded** As-welded*** Welded and
heat-treated**
mils mm mils mm mils mm
Formic Acid
Hydrochloric Acid
Hydrochloric Acid
Hydrochloric Acid
Hydrochloric Acid
Sulfuric Acid
Sulfuric Acid
20
10
10
10+0.5 NaOCl
3.5+8 Fe Cl3
10
85
Boiling
150
167
167
190
Boiling
167
Boiling
66
75
75
88
Boiling
75
4.8
21.0
40.0
46.0

15.0
17.0
0.12
0.53
1.02
1.17

0.38
0.43
3.5
20.0
50.0
50.0
5.0
14.0
17.0
0.09
0.51
1.27
1.27
0.13
0.36
0.43
3.60
21.0



18.0
0.09
0.53



0.46
Heat-Treatment:

Wrought forms of Hastelloy C-276 are furnished in the solution heat-treated condition unless otherwise specified. Alloy C-276 is normally solution heat-treated at 2050°F and rapid quenched. Parts which have been hot-formed should be solution heat-treated prior to final fabrication or installation, if possible.