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Seamless Carbon Steel Tubing, 0.50 Inch OD, 0.05 Inch Thick, 0.40 Inch ID

Description & Features

Seamless carbon steel tubing from Marmon/Keystone is a reliable choice for high-performance applications requiring durability and precise tolerances. Made to the specifications of SAE J524, this tubing is ideal for bending and flaring due to its seamless low carbon steel construction with a tensile strength of 55,000 psi.

With an outside diameter of 0.50 inches and a wall thickness of 0.05 inches, it delivers a maximum working pressure of 1,797 psi and can withstand burst pressures up to 10,780 psi. The inner diameter of 0.40 inches provides an inside area of 0.1269 sq. inches, making it well-suited for applications involving high pressure and rated flow requirements.

The tubing's performance is backed by stringent pressure ratings based on the SAE J1065 specification, ensuring reliability and safety. This product is integral for use in demanding industrial environments where precision and strength are critical.

Supplier Part Number: 1/2.049

Specifications

Burst Pressure 10780	Brand Marmon/Keystone	Brand Marmon - Keystone	Pack Size 240.00	UOM LN20	I.D. 0.402 in	Inside Area 0.13	Maximum Working Pressure 1797	O.D. 0.5 in	Rated Flow 6	Safety Factor 6:1	Supplier Part Number 1/2.049	Wall Thickness 0.05	Alternate Part Numbers Alternate Part Number 2109-1/2TUBE, Alternate Part Number C1AE75, Alternate Part Number MI-04176783, Alternate Part Number MINO-01965X00502	Product Weight 5.26 lbs

Similar Products

Model Number	O.D.	Wall Thickness	I.D.	Inside Area	Rated Flow	Maximum Working Pressure	Burst Pressure	Safety Factor
1/2.049 Seamless Carbon Steel Tubing	0.5 in	0.049	0.402 in	0.1269	6	1797	10780	6:1
1/2.065 Seamless Carbon Steel Tubing	0.5 in	0.065	0.37 in	0.1075	4.9	2383	14300	6:1
1/4.049 Seamless Carbon Steel Tubing	0.25 in	0.049	0.152 in	0.0181	0.8	3593	21560	6:1
3/8.049 Seamless Carbon Steel Tubing	0.375 in	0.049	0.277 in	0.0602	2.8	2396	14373	6:1
3/8.065 Seamless Carbon Steel Tubing	0.375 in	0.065	0.245 in	0.0471	2.6	3178	19067	6:1
5/8.095 Seamless Carbon Steel Tubing	0.63 in	0.095	0.435 in	0.1485	6.9	2787	16720	6:1
1-1/4.095 Seamless Carbon Steel Tubing	1.25 in	0.095	1.06 in	0.882	41	1393	8360	6:1
1-1/4.120 Seamless Carbon Steel Tubing	1.25 in	0.12	1.01 in	0.8008	36.7	1760	10560	6:1
1.065 Seamless Carbon Steel Tubing	1 in	0.065	0.87 in	0.5942	28.1	1192	7150	6:1
1.120 Seamless Carbon Steel Tubing	1 in	0.12	0.76 in	0.4534	20.7	2200	13200	6:1
1/2.083 Seamless Carbon Steel Tubing	0.5 in	0.083	0.334 in	0.0876	4	3043	18260	6:1
3/16.035 Seamless Carbon Steel Tubing	0.1875 in	0.035	0.1175 in	0.0108	0.4	3422	20533	6:1
3/4.049 Seamless Carbon Steel Tubing	0.75 in	0.049	0.652 in	0.3337	15.4	1198	7187	6:1
3/4.065 Seamless Carbon Steel Tubing	0.75 in	0.065	0.62 in	0.3018	12	1589	9533	6:1
3/4.095 Seamless Carbon Steel Tubing	0.75 in	0.095	0.56 in	0.2462	11	2322	13933	6:1
3/4.109 Seamless Carbon Steel Tubing	0.75 in	0.109	0.532 in	0.2222	10.6	2664	15987	6:1
5/8.065 Seamless Carbon Steel Tubing	0.63 in	0.065	0.495 in	0.1923	9	1907	11440	6:1

Product Questions & Answers (4)

Question by: Dwayne B on Dec 15, 2025, 7:38 AM

what kind of pressure can this half inch line handle before it fails

Answer by: Customer Support on Dec 16, 2025, 1:35 PM

You get a maximum working pressure of 1,797 psi on this 1/2-inch line. The burst pressure sits much higher at 10,780 psi, which provides a solid 6:1 safety factor based on the Barlow formula.

Question by: Earl C on Jun 25, 2025, 4:52 PM

trying to match up tubing i already got, what are the actual sizes on this one

Answer by: Customer Support on Jun 27, 2025, 11:26 AM

For sizing, it is 0.50 inch outside diameter with a 0.049 inch wall, which puts the inside diameter at about 0.402 inch.

Question by: Sheila R on Mar 5, 2026, 6:06 AM

tubing says it handles up to 1,797 psi working pressure, but we got some pretty rough shock loads in our system. should i be figuring on a lower number than that?

Answer by: Customer Support on Mar 7, 2026, 6:49 AM

For systems where hydraulic shock and mechanical strain are considerable, the working pressure is already calculated using a 6:1 safety factor against the burst pressure of 10,780 psi. If your shock loads are on the severe end, the recommendation is to apply an 8:1 safety factor, which means your actual safe working pressure should be figured lower than the listed 1,797 psi. That rated number assumes the 6:1 factor as a baseline. Size your system accordingly based on how rough the conditions really are.

Question by: Jerry B on Feb 19, 2026, 7:36 PM

I need some tubing that can handle a good amount of pressure. What's the max this stuff can take before it bursts?

Answer by: Customer Support on Feb 21, 2026, 3:29 PM

This tubing is rated to withstand a burst pressure of up to 10,780 psi, as it's made to SAE J1065 standards.