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Seamless Carbon Steel Tubing, 0.63 Inch OD, 0.10 Inch Thick, 0.44 Inch ID

Description & Features

Rated to a maximum working pressure of 2,787 PSI with a 6:1 safety factor, this tubing is built for dependable performance in hydraulic and fluid conveyance applications. The Seamless Carbon Steel Tubing, 0.63 Inch OD, 0.10 Inch Thick, 0.44 Inch ID conforms to SAE J524, specifying seamless low carbon steel in an annealed condition suitable for bending and flaring. Wall thickness measures 0.095 inches, with an inside diameter of 0.435 inches and an inside area of 0.1485 square inches. Burst pressure is rated at 16,720 PSI per the Barlow formula, based on SAE Specification J1065 and a tensile strength of 55,000 PSI. Rated flow is 6.9 GPM. Supplied by Marmon/Keystone under catalog number C1BR57, this tubing is a well-established choice for industrial hydraulic line fabrication where consistent wall integrity and formability are required.

SKU: 5/8.095

Supplier Part Number (MPN): .625X.095-STL-SML

Alternate Part Numbers: C1BR57, MI-08733681, MINO-01965X96525

Specifications

Burst Pressure 16720	Brand Marmon/Keystone	Brand Marmon - Keystone	Pack Size 12.00	UOM FT	I.D. 0.435 in	Inside Area 0.15	Maximum Working Pressure 2787	O.D. 0.63 in	Rated Flow 6.90	Safety Factor 6:1	Supplier Part Number 5/8.095	Wall Thickness 0.10	Alternate Part Numbers Alternate Part Number C1BR57, Alternate Part Number MI-08733681, Alternate Part Number MINO-01965X96525	Product Weight 0.35 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: Lyle R on Oct 2, 2025, 5:41 PM

got a line with 5/8 OD tubing on it now, is this the same size or am i gonna be off?

Answer by: Customer Support on Oct 4, 2025, 6:22 AM

Match it up by the measurements. This tubing is 0.63 inch outside diameter, with a 0.095 inch wall and about a 0.435 inch inside diameter.

Question by: Cindy H on Jun 13, 2025, 7:16 PM

What kinda pressure can this tubing handle without poppin'?

Answer by: Customer Support on Jun 15, 2025, 4:16 PM

This seamless carbon steel tubing is rated to handle a maximum working pressure of 2787 PSI, based on SAE specification J1065.

Question by: Johnny M on Feb 13, 2026, 6:04 AM

working pressure on this tubing is listed at 2787 psi, but we run systems that see some pretty good hydraulic shock from time to time. should i be looking at a lower number for actual use?

Answer by: Customer Support on Feb 14, 2026, 10:22 AM

Good thinking to account for shock. The 2787 psi figure is already calculated using a 6:1 safety factor, which is the recommended starting point when hydraulic shock and mechanical strain are considered considerable. If your system hits severe shock conditions on a regular basis, an 8:1 safety factor applies, and you'd want to work off a lower safe operating pressure than what's listed. For lighter duty where shock really isn't a concern, a 4:1 factor and higher working pressures can be carefully considered. Match the safety factor to your actual conditions and size accordingly.

Question by: Tony J on Dec 14, 2025, 5:01 PM

got a piece of tubing here that measures right at 5/8 OD. is this the one with about a .095 wall and around .44 ID?

Answer by: Customer Support on Dec 16, 2025, 8:52 AM

The key dimensions on this tube are 0.63 inch outside diameter with a 0.095 inch wall, which puts the inside diameter at about 0.435 inch (often rounded to 0.44). If your measurements are landing in that neighborhood, it matches.