Nickel Alloy 400 Tubing | McMaster-Carr

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	Material Material	Show

Nickel

400 Nickel

	Material Material	Hide

	System of Measurement System of Measurement

Inch

	OD OD

	Wall Thickness Wall Thickness

0.035"

0.049"

0.065"

	ID ID

	For Use With For Use With

	Maximum Pressure Maximum Pressure

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

500° to 999° F

	Specifications Met Specifications Met

ASME

ASTM

	Fabrication Fabrication

Seamless

	Minimum Temperature Minimum Temperature

-399° to -250° F

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Sterilize With Sterilize With

Steam (Autoclaving)

Chemicals

Gas

	Bendable Bendable

Yes

	Bending Method Bending Method

Tube Bender

	Flareable Flareable

Yes

	Temper Rating Temper Rating

Soft

	Form Form

Straight

	Shape Shape

	Straight
	90° Elbow
	Tee

	For Tube OD For Tube OD

1/4"

3/8"

1/2"

	Connection Style Connection Style

34 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

About Metal Tubing

Temperature Range: -320° to 900° F
Bending Method: Tube Bender

This tubing won't degrade, even when used with harsh acids. It is also known as Monel. Tubing has excellent corrosion resistance. It is seamless, which provides a smooth interior for unrestricted flow. It can be flared without splitting and connects by welding.

For technical drawings and 3-D models, click on a part number.

For Use With Alkalies, Hydrofluoric Acid, Salt Water, Sulfuric Acid
OD	Wall Thick.	ID	Max. Pressure	Temper Rating		1 ft.	3 ft.	6 ft.
1/4"	0.035"	0.18"	4,300 psi @ 72° F	Soft	00000000	000000	000000	000000
3/8"	0.035"	0.305"	2,800 psi @ 72° F	Soft	00000000	00000	00000	000000
3/8"	0.049"	0.277"	4,000 psi @ 72° F	Soft	00000000	00000	000000	000000
1/2"	0.035"	0.43"	2,100 psi @ 72° F	Soft	00000000	00000	00000	000000
1/2"	0.049"	0.402"	2,900 psi @ 72° F	Soft	00000000	00000	000000	000000
1/2"	0.065"	0.37"	3,900 psi @ 72° F	Soft	00000000	00000	000000	000000
3/4"	0.065"	0.62"	2,700 psi @ 72° F	Soft	00000000	00000	000000	000000

Acid-Resistant Yor-Lok Fittings for Nickel Alloy Tubing

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Hydrofluoric Acid, Mineral Oil, Salt Water, Steam, Sulfuric Acid, Water
Temperature Range: -325° to 900° F
Tubing: Use with seamless soft 400 nickel
Specifications Met: See table

Made of 400 nickel, these Monel fittings have the corrosion resistance to handle hydrofluoric and sulfuric acid. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They include a nut with two sleeves (ferrules). The sleeves bite into tubing as you tighten the nut, creating a strong, leak-tight seal. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Specifications Met		Each
NPT Threads
1/4"	0.035"	1/4	400 Nickel	4,800 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	000000
3/8"	0.035"	1/4	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	00000
3/8"	0.035"	3/8	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	00000
1/2"	0.035"	1/2	400 Nickel	2,300 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	00000

Straight Adapters, Tube x Female Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Specifications Met		Each
NPT Threads
1/4"	0.035"	1/4	400 Nickel	4,800 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	000000
3/8"	0.035"	1/4	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	00000
3/8"	0.035"	3/8	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	00000
1/2"	0.035"	1/2	400 Nickel	2,300 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B164	00000000	000000

Straight Connectors, Tube

For Tube
OD	Wall Thick.	Material	Max. Pressure	Specifications Met		Each
1/4"	0.035"	400 Nickel	4,800 psi @ 72° F	ASTM B164	00000000	000000
3/8"	0.035"	400 Nickel	3,100 psi @ 72° F	ASTM B164	00000000	00000
1/2"	0.035"	400 Nickel	2,300 psi @ 72° F	ASTM B164	00000000	000000

90° Elbow Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Specifications Met		Each
NPT Threads
1/4"	0.035"	1/4	400 Nickel	4,800 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B564	00000000	000000
3/8"	0.035"	1/4	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B564	00000000	00000
3/8"	0.035"	3/8	400 Nickel	3,100 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B564	00000000	000000
1/2"	0.035"	1/2	400 Nickel	2,300 psi @ 72° F	ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM B564	00000000	000000

90° Elbow Connectors, Tube

For Tube
OD	Wall Thick.	Material	Max. Pressure	Specifications Met		Each
1/4"	0.035"	400 Nickel	4,800 psi @ 72° F	ASTM B164	00000000	000000
3/8"	0.035"	400 Nickel	3,100 psi @ 72° F	ASTM B164	00000000	00000
1/2"	0.035"	400 Nickel	2,300 psi @ 72° F	ASTM B164	00000000	000000

Tee Connectors, Tube

For Tube
OD	Wall Thick.	Material	Max. Pressure	Specifications Met		Each
1/4"	0.035"	400 Nickel	4,800 psi @ 72° F	ASTM B564	00000000	0000000
3/8"	0.035"	400 Nickel	3,100 psi @ 72° F	ASTM B564	00000000	000000
1/2"	0.035"	400 Nickel	2,300 psi @ 72° F	ASTM B564	00000000	000000

Nuts

For Tube OD	Nut Material	Max. Pressure	Specifications Met		Each
1/4"	400 Nickel	4,800 psi @ 72° F	ASTM B164	00000000	00000
3/8"	400 Nickel	3,100 psi @ 72° F	ASTM B164	00000000	00000
1/2"	400 Nickel	2,300 psi @ 72° F	ASTM B164	00000000	00000

Front and Back Sleeves

For Tube OD	Sleeve Material	Max. Pressure	Specifications Met		Each
1/4"	400 Nickel	4,800 psi @ 72° F	ASTM B164	00000000	00000
3/8"	400 Nickel	3,100 psi @ 72° F	ASTM B164	00000000	00000
1/2"	400 Nickel	2,300 psi @ 72° F	ASTM B164	00000000	00000

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How to Identify and Measure Fittings

About Metal Tubing

Acid-Resistant Nickel Tubing

Acid-Resistant Yor-Lok Fittings for Nickel Alloy Tubing