ASTM B435, B906 nickel-chromium-iron-molybdenum alloy hastelloy X plate/sheet

Hastelloy X is a high-temperature nickel-based superalloy that belongs to the Hastelloy family. It is specifically designed to offer exceptional strength and oxidation resistance at elevated temperatures. The alloy primarily consists of nickel (Ni), chromium (Cr), cobalt (Co), and molybdenum (Mo), along with small amounts of other alloying elements.

The advantages of Hastelloy X alloy include:

1. High Temperature Strength: Hastelloy X exhibits excellent strength and stability at high temperatures, even in environments with severe oxidative and corrosive conditions. It can withstand temperatures up to 1200°C (2200°F), making it suitable for applications requiring exceptional heat resistance.

2. Oxidation Resistance: Hastelloy X offers excellent resistance to oxidation, even at high temperatures. This property allows it to maintain its mechanical strength and structural integrity in environments with high oxygen content, such as combustion chambers, hot sections of gas turbines, and industrial furnace components.

3. Good Fabrication Characteristics: Hastelloy X can be easily fabricated and machined using common techniques. It possesses good weldability, enabling the manufacture of complex shapes and structures for various applications.

4. High Resistance to Carburization and Nitridation: Hastelloy X demonstrates remarkable resistance to carburization and nitridation, which are processes involving the diffusion of carbon or nitrogen into the alloy at high temperatures. This resistance makes it suitable for applications where exposure to hydrocarbon fuels or nitrogen-rich atmospheres is expected.

5. Excellent Creep and Stress Rupture Strength: Hastelloy X exhibits high creep and stress rupture strength, allowing it to withstand mechanical loads and stresses over extended periods at elevated temperatures. This property is crucial in applications subjected to long-term exposure to high temperatures.

6. Versatility: Hastelloy X is a versatile alloy that finds application in various industries, including aerospace, gas turbine engines, chemical processing, and industrial furnace components. Its combination of high-temperature strength, oxidation resistance, and excellent mechanical properties make it suitable for demanding environments.

The Chemical Composition of Hastelloy X, %
Ni	balance
Cr	20.5-23.0
Fe	17.0-20.0
Mo	8.0-10.0
Co	0.5-2.5
W	0.20-1.00
C	0.05-0.15
Mn	≤1.00
Si	≤1.00
P	≤0.040
S	≤0.030

Process	Diameter	Voltage	Amperage	Gas
TIG	.045"     (1.2mm)	13-16	80-110	100% Argon
	1/16"     (1.6mm)	14-18	90-130	100% Argon
	3/32"     (2.4mm)	15-20	120-175	100% Argon
	1/8"      (3.2mm)	15-20	150-220	100% Argon
MIG	.045"     (1.2mm)	28-32	180-220	75% Argon + 25% Helium
	1/16"     (1.6mm)	29-33	200-250	75% Argon + 25% Helium
SAW	3/32"     (2.4mm)	28-30	275-350	Suitable Flux may be used
	1/8"      (3.2mm)	29-32	350-450	Suitable Flux may be used
	5/32"     (4.0mm)	30-33	400-550	Suitable Flux may be used

Hastelloy	Density g/cm3	Melting point ºC	Elongation A5 %	Tensile Strength Rm N/mm2	Yield Strength RP0.2N/mm2
C-276	8.9	1325-1370ºC	62	758	363
C-22	8.9	1325-1370 ºC	40	690	283
C-2000	8.5	1399ºC 2550°F	45	690	283
B-2	9.2	1330-1380ºC	40	745	325
B-3	9.22	1370-1418ºC	40	760	350
G-30	8.22	1399ºC 2550°F	62	524	200
X	8.3	1260-1355ºC	30	690	/
C-4	8.64	399°C 2550°F	40	690	280
G-35	8.22	1370-1400ºC	/	/	/
C	8.94	1330-1380 ºC	40	690	310