ASTM A269 TP316 Bright Annealed Stainless Steel Tube

ASTM A269 TP316 bright annealed stainless steel tube is an austenitic stainless steel pipe made from TP316 (UNS S31600) material and processed by Bright Annealing (BA). It typically contains 16–18% chromium (Cr), 10–14% nickel (Ni), and 2–3% molybdenum (Mo), providing excellent corrosion resistance, high surface finish, and good mechanical properties.

 

According to standard requirements, 316L stainless steel tubes are generally supplied in a solution-annealed condition. The annealing temperature is not lower than 1040°C, followed by water quenching or rapid cooling to ensure uniform microstructure and improved resistance to intergranular corrosion. The product is available in both seamless and welded forms, with common outer diameters ranging from 6–48 mm (approximately 1/4"–2") and wall thickness from 0.5–3.0 mm. Standard lengths include 3 m, 6 m, or customized sizes. The surface has a silver-white metallic luster (BA finish), without pickling, featuring smooth inner and outer walls with low roughness, which makes it easy to clean and sterilize.

ASTM A269 Gr TP316 cold drawn seamless tube

ASTM A269 TP 316 stainless steel welded tubes

ASTM A269 Grade TP316 coil tubing

 

 

ASTM A269 TP316 tubing is suitable for applications with an inner diameter ≥ 1/4 inch and wall thickness ≥ 0.020 inch. It is widely used in chemical, food, pharmaceutical, power generation, heat exchanger, and instrumentation piping systems where high cleanliness and corrosion resistance are required.

 

Chemical Composition (ASTM A269 TP316)

Element	Symbol	Content (%)
Carbon	C	≤ 0.08
Manganese	Mn	≤ 2.00
Phosphorus	P	≤ 0.045
Sulfur	S	≤ 0.030
Silicon	Si	≤ 0.75
Chromium	Cr	16.0 – 18.0
Nickel	Ni	11.0 – 14.0
Molybdenum	Mo	2.00 – 3.00

 

sa 269 tp 316 seamless tube mechanical properties

grade	yield str (0.2% proof) (mpa) minimum	tensile str (mpa) minimum	elong (% in 50mm) minimum	hardness rockwell b (hr b) maximum	brinell (hb) maximum
316	205	515	40	95	217

 

physical properties of astm a269m tp316 tubing

grade	elastic modulus (gpa)	density (kg/meter3)	mean co-eff of thermal expansion (millimeter/m/°c) 0–315°c	mean co-eff of thermal expansion (millimeter/m/°c) 0–100°c	mean co-eff of thermal expansion (millimeter/m/°c) 0–538°c	specific heat 0–100°c (j/kg.k)	thermal conductivity at 100°c (w/m.k)	thermal conductivity at 500°c (w/m.k)	elec resistivity (nω.m)
316	193	8000	16.2	15.9	17.5	500	16.3	21.5	74

 

Weight Chart of ASME SA 269 316 Bright Annealed Tube

Outer Dia in Inches	22ga .028"	18ga .049"	20ga .035"	16ga .065"	14ga .083"	12ga 0.109"	25ga .020"	28ga .010"	13ga .095"	11ga .120"	9ga .148"	10ga .134"
1 /2	8400	14700	10500	19500	24900		6000		28500
	0.1411	0.236	0.1738	0.302	0.3696		0.1025		0.4109
5/8	6725	11750	8400	15600	19925		4800		22800
	0.1785	0.3014	0.2205	0.3888	0.4805		0.1292		0.5377
3/4	5600	9800	7000	13000	16600	21800	4000		19000	24000
	0.2159	0.3668	0.2673	0.4755	0.5913	0.7462	0.1559		0.6646	0.8074
7/8	4800	8400	6000	11150	14250	18675	3425		16275	20570
	0.2533	0.4323	0.314	0.5623	0.7021	0.8917	0.1826		0.7914	0.9676
1	4200	7350	5250	9750	12450	16350	3000		14250	18000	22200	20100
	0.2907	0.4977	0.3607	0.6491	0.8129	1.037	0.2093		0.9182	1.128	1.347	1.251
1 -1 /4	3350	5875	4200	7800	9950	13075			11400	14400	17750	16075
	0.3654	0.6285	0.4542	0.8226	1.034	1.328			1.172	1.448	1.742	1.612
1 -3/8	3050	5350	3825	7100	9050	11900			10350	13100	16150	14625
	0.4028	0.6939	0.5009	0.9094	1.145	1.474			1.299	1.608	1.939	1.793

 

Standard Tolerance of ASTM A269

No.	Size, Outside Diameter, in.	Permissible Variations in Outside Diameter, in. (mm)	Permissible Variations in Wall Thickness,%	Permissible Variations in Cut Length, in. (mm)		Thin Walled Tubes
				Over	Under
1	Up to ½[13]	±0.005(0.13)	±15	⅛(3.2)	0	...
2	½ to 1½, excl	±0.005(0.13)	±10	⅛(3.2)	0	less than 0.065 in. (1.65 mm) nominal
3	1½ to 3½, excl	±0.010(0.25)	±10	3/16(4.8)	0	less than 0.095 in. (2.41 mm) nominal
4	3½ to 5½, excl	±0.015(0.38)	±10	3/16(4.8)	0	less than 0.150 in. (3.81 mm) nominal
5	5½ to 8, excl	±0.030(0.76)	±10	3/16(4.8)	0	less than 0.150 in. (3.81 mm) nominal
6	8 to 12, excl	±0.040(1.01)	±10	3/16(4.8)	0	less than 0.200 in. (5.08 mm) nominal
7	12 to 14, excl	±0.050(1.26)	±10	3/16(4.8)	0	less than 0.220 in. (5.59 mm) nominal

 

What is the typical surface roughness (Ra) of ASTM A269 TP316 BA tubing?

The typical internal and external roughness of bright annealed (BA) tubing is generally around Ra < 0.5 μm (20 μin). For applications requiring higher purity such as in the semiconductor or ultra-pure gas industries the Ra value can be further reduced to below 0.25 μm through subsequent electropolishing (EP).

 

Applications:

Control and Instrumentation Tubing.
Chromatography and Laboratory equipment.
Pharmaceutical and Biotech processing.
Semiconductor gas delivery systems.
Marine and offshore hydraulic lines.

 

A269 Grade TP316 Cold Drawn Seamless Tube HS Code

HS CODE	73044100

 

All our products undergo individual inspection in compliance with specified standards prior to packaging. Only those that pass the inspection are packaged in accordance with export criteria.

Flaring Test
Mechanical Testing
Chemical Testing
Flattening Test
PMI Testing
Hardness Testing

 

Delivery and Packing
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