"Government Recognised Star Export House"
The ASTM A511 grade covers tubes of seamless configurations that are designed for use in mechanical applications. ASTM A511 Stainless Steel Tubing is designed with a superior chemical composition consisting of carbon, manganese, phosphorous, sulfur, silicon, nickel, and chromium. The outstanding content gives these modules enhanced resistance to corrosive and oxidative media across stress-induced setups. The Stainless Steel ASTM A511 Seamless Tube is produced via an extrusion process as hot steel billets are passed through the metal grade to precisely shape them. The versatile ASTM A511 Mt304 Stainless Steel Seamless Tube has enhanced strength and superior load-bearing capacity in the system. These tubes have higher dimensional accuracy and can be utilized in different applications across a wide range of systems. The robust MT310S Seamless Stainless Steel Mechanical Tubing is a light gauge steel grade that is seen in use for general purpose applications requiring higher tensile strength and toughness. These tubes can be shaped in the form of a square, rectangle, round, or cut to size. A511M Grade Mt316 Mechanical Tube encompasses a wide range of structural and non-structural applications. These tubes are a common feature in solar racking, agricultural products, conveyor rollers, trailers, miscellaneous product applications, etc.
The ASTM A511 Tubing can be processed in a hot or cold rolling procedure. These tubes are designed in sizes between ¼ OD to ¾ OD. This tubing is seen in wall thicknesses of 0.5mm to 25.4mm. Our products are quality assured and can be transported to your doorstep within a short span of time. Our esteemed workers make use of the best raw materials and latest technology to produce the MT309S large diameter stainless steel tube and all our products. If you have any queries or want to know more about these products, contact or visit us for more information.

Specification Chart Of ASTM A511 Stainless Steel Tubing
| Grades | MT304L, MT304, MT309S, MT316L, MT310S, MT317, MT347, MT321, MT410, MT446, MT430, ASTM A511 CRES 316 |
| Standards | ASTM A511 |
| Shapes | round, rectangular, square, U-bend tubing, oval |
| Material | Austenitic ss, Ferritic and Martensitic Stainless Steel A511 Tubing manufacturer in India |
| Manufacturering Process | cold, hot finished |
| Weight | 8.678 per foot |
ASTM A511 Mt304 Stainless Steel Seamless Tube Chemical Composition
| GRADE |
SULFUR, MAXIMUM |
PH, MAXIMUM |
C, MAXIMUM |
MG, MAXIMUM |
SILICON, MAXIMUM |
MOLYB- DENUM |
NI |
COPPER (CU) |
CHROMIUM |
ALUMINUM (AL) |
SELENIUM | NITROGEN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MT 429 | 0.030 | 0.040 | 0.12 | 1.00 | 1.00 | - | 0.50 maximum | - | 14.0–16.0 | - | - | - |
| MT 430 | 0.030 | 0.040 | 0.12 | 1.00 | 1.00 | - | 0.50 maximum | - | 16.0–18.0 | - | - | - |
| MT 443 | 0.030 | 0.040 | 0.20 | 1.00 | 1.00 | - | 0.50 maximum | 0.90–1.25 | 18.0–23.0 | - | - | - |
| MT 403 | 0.030 | 0.040 | 0.15 | 1.00 | 0.50 | 0.60 maximum | 0.50 maximum | 11.5–13.0 | ||||
| MT 410 | 0.030 | 0.040 | 0.15 | 1.00 | 1.00 | - | 0.50 maximum | - | 11.5–13.5 | - | - | - |
| MT 414 | 0.030 | 0.040 | 0.15 | 1.00 | 1.00 | - | 1.25–2.50 | - | 11.5–13.5 | - | - | - |
| MT 416Se | 0.060 | 0.060 | 0.15 | 1.25 | 1.00 | - | 0.50 maximum | - | 12.0–14.0 | - | 0.12–0.20 | - |
| MT 431 | 0.030 | 0.040 | 0.20 | 1.00 | 1.00 | - | 1.25–2.50 | - | 15.0–17.0 | - | - | - |
| MT 440A | 0.030 | 0.040 | 0.60 to 0.75 | 1.00 | 1.00 | 0.75 maximum | - | - | 16.0–18.0 | - | - | - |
| MT 405 | 0.030 | 0.040 | 0.08 | 1.00 | 1.00 | - | 0.50 maximum | - | 11.5–14.5 | 0.10–0.30 | - | - |
| MT 446–1 | 0.030 | 0.040 | 0.20 | 1.50 | 1.00 | - | 0.50 maximum | - | 23.0–30.0 | - | - | 0.25 maximum |
| MT 446–2A | 0.030 | 0.040 | 0.12 | 1.50 | 1.00 | - | 0.50 maximum | - | 23.0–30.0 | - | - | 0.25 maximum |
| 29-4 | 0.020 | 0.025 | 0.010 | 0.30 | 0.20 | 3.5–4.2 | 0.15 maximum | 0.15 maximum | 28.0–30.0 | - | - | 0.020 maximum |
| 29-4-2 | 0.020 | 0.025 | 0.010 | 0.30 | 0.20 | 3.5–4.2 | 2.0–2.5 | 0.15 maximum | 28.0–30.0 | - | - | 0.020 maximumB |
A511M Grade Mt316 Mechanical Tube Mechanical Properties
| Grade | Mn≤ | C≤ | S≤ | Ni | P≤ | Si≤ | Mo | Cr | Ti |
| MT 316 | 2.0 | 0.08 | 0.030 | 11.0-14.0 | 0.040 | 1.00 | 2.0-3.0 | 16.0-18.0 | - |
Weight Chart Of Stainless Steel ASTM A511 Seamless Tube
| O.D IN | I.D IN | CHUCKED TRUE TO THE I.D | GUARANTEED COMPONENT SIZES CHUCKED TRUE TO THE O.D. | WEIGHT LB/FT | ||
|---|---|---|---|---|---|---|
| MA. O.D IN. | MIN. I.D IN. | MA. O.D IN. | MIN. I.D IN. |
|||
| 2.20 | 1.57 | 2.13 | 1.61 | 2.17 | 1.65 | 6.85 |
| 1.42 | 2.12 | 1.46 | 2.17 | 1.50 | 8.13 | |
| 1.10 | 2.11 | 1.14 | 2.17 | 1.19 | 10.2 | |
| 2.48 | 1.97 | 2.41 | 2.01 | 2.44 | 2.04 | 6.66 |
| 1.57 | 2.39 | 1.61 | 2.44 | 1.66 | 10.3 | |
| 1.42 | 2.39 | 1.46 | 2.44 | 1.51 | 11.6 | |
| 1.26 | 2.39 | 1.30 | 2.44 | 1.35 | 12.8 | |
| 2.80 | 2.20 | 2.71 | 2.24 | 2.75 | 2.28 | 8.67 |
| 1.77 | 2.70 | 1.81 | 2.75 | 1.86 | 13.2 | |
| 1.57 | 2.70 | 1.61 | 2.75 | 1.67 | 15.0 | |
| 1.42 | 2.69 | 1.46 | 2.75 | 1.52 | 16.2 | |
| 2.95 | 1.57 | 2.85 | 1.61 | 2.91 | 1.67 | 17.5 |
| 3.15 | 2.48 | 3.06 | 2.52 | 3.10 | 2.56 | 11.0 |
| 1.97 | 3.05 | 2.01 | 3.10 | 2.06 | 17.0 | |
| 1.77 | 3.04 | 1.81 | 3.10 | 1.87 | 19.0 | |
| 1.57 | 3.04 | 1.61 | 3.10 | 1.68 | 20.8 | |
| 1.26 | 0.79 | 1.19 | 0.83 | 1.22 | 0.86 | 2.82 |
| 0.63 | 1.18 | 0.67 | 1.22 | 0.71 | 3.41 | |
| 1.42 | 0.98 | 1.34 | 1.02 | 1.38 | 1.06 | 3.06 |
| 0.79 | 1.34 | 0.83 | 1.38 | 0.87 | 3.97 | |
| 0.63 | 1.33 | 0.67 | 1.38 | 0.71 | 4.56 | |
| 1.57 | 1.10 | 1.50 | 1.14 | 1.54 | 1.18 | 3.69 |
| 0.98 | 1.50 | 1.02 | 1.54 | 1.06 | 4.35 | |
| 0.79 | 1.49 | 0.83 | 1.54 | 0.87 | 5.26 | |
| 1.77 | 1.26 | 1.70 | 1.30 | 1.73 | 1.33 | 4.50 |
| 1.10 | 1.69 | 1.14 | 1.73 | 1.18 | 5.49 | |
| 0.79 | 1.69 | 0.83 | 1.73 | 0.87 | 7.06 | |
| 1.97 | 1.42 | 1.89 | 1.46 | 1.93 | 150 | 5.38 |
| 1.26 | 1.89 | 1.30 | 1.93 | 1.34 | 6.52 | |
| 0.98 | 1.88 | 1.02 | 1.93 | 1.07 | 8.13 | |
| 3.35 | 1.77 | 3.23 | 1.81 | 3.30 | 1.87 | 22.5 |
| 3.54 | 2.80 | 3.45 | 2.84 | 3.49 | 2.88 | 13.8 |
| 2.48 | 3.44 | 2.52 | 3.49 | 2.57 | 18.2 | |
| 2.20 | 3.43 | 2.24 | 3.49 | 2.30 | 21.7 | |
| 1.97 | 3.43 | 2.01 | 3.49 | 2.07 | 24.3 | |
| 3.74 | 1.97 | 3.61 | 2.01 | 3.68 | 2.07 | 28.3 |
| 3.94 | 3.15 | 3.83 | 3.20 | 3.88 | 3.24 | 16.4 |
| 2.80 | 3.83 | 2.84 | 3.88 | 2.89 | 22.0 | |
| 2.48 | 3.82 | 2.52 | 3.88 | 2.58 | 26.3 | |
| 2.20 | 3.81 | 2.24 | 3.88 | 2.31 | 28.4 | |
| 4.17 | 3.15 | 4.06 | 3.20 | 4.11 | 3.25 | 21.7 |
| 2.80 | 4.06 | 2.84 | 4.11 | 2.89 | 27.3 | |
| 2.48 | 4.04 | 2.52 | 4.11 | 2.59 | 31.6 | |
| 2.20 | 4.04 | 2.24 | 4.11 | 2.32 | 35.0 | |
| 4.41 | 3.54 | 4.30 | 3.60 | 4.34 | 3.64 | 20.3 |
| 3.15 | 4.29 | 3.20 | 4.34 | 3.25 | 27.3 | |
| 2.80 | 4.28 | 2.84 | 4.34 | 2.90 | 32.8 | |
| 2.48 | 4.27 | 2.52 | 4.34 | 2.59 | 37.2 | |
| 4.65 | 3.54 | 4.52 | 3.60 | 4.57 | 3.65 | 26.2 |
| 3.15 | 4.51 | 3.20 | 4.57 | 3.26 | 33.2 | |
| 2.80 | 4.51 | 2.84 | 4.57 | 2.91 | 38.7 | |
| 2.48 | 4.50 | 2.52 | 4.57 | 2.60 | 43.1 | |
| 4.92 | 3.94 | 4.80 | 4.00 | 4.85 | 4.04 | 25.7 |
| 3.54 | 4.79 | 3.60 | 4.85 | 3.65 | 33.5 | |
| 3.15 | 4.78 | 3.20 | 4.85 | 3.26 | 40.5 | |
| 2.80 | 4.77 | 2.84 | 4.85 | 2.91 | 46.0 | |
| 5.20 | 4.17 | 5.07 | 4.24 | 5.12 | 4.28 | 28.2 |
| 3.54 | 5.06 | 3.60 | 5.12 | 3.66 | 41.1 | |
| 3.15 | 5.04 | 3.20 | 5.12 | 3.27 | 48.0 | |
| 2.80 | 5.04 | 2.84 | 5.12 | 2.92 | 53.6 | |
| 5.51 | 4.41 | 5.38 | 4.48 | 5.43 | 4.53 | 32.1 |
| 3.94 | 5.37 | 4.00 | 5.43 | 4.06 | 42.5 | |
| 3.54 | 5.36 | 3.60 | 5.43 | 3.67 | 50.3 | |
| 3.15 | 5.35 | 3.20 | 5.43 | 3.28 | 57.3 | |
| 5.91 | 4.92 | 5.77 | 5.00 | 5.81 | 5.04 | 31.9 |
| 4.17 | 5.75 | 4.24 | 5.81 | 4.30 | 49.9 | |
| 3.74 | 5.74 | 3.80 | 5.81 | 3.87 | 58.9 | |
| 3.15 | 5.72 | 3.20 | 5.81 | 3.29 | 67.9 | |
| 6.30 | 5.20 | 6.15 | 5.28 | 6.20 | 5.33 | 37.8 |
| 4.41 | 6.13 | 4.48 | 6.20 | 4.55 | 57.7 | |
| 6.69 | 5.51 | 6.54 | 5.59 | 6.59 | 5.65 | 42.9 |
| 5.12 | 6.53 | 5.2 | 6.59 | 5.26 | 53.9 | |
| 4.65 | 6.52 | 4.72 | 6.59 | 4.79 | 66.1 | |
| 7.09 | 5.91 | 6.93 | 6 | 6.98 | 6.05 | 46 |
| 5.51 | 6.92 | 5.59 | 6.98 | 5.66 | 57.9 | |
| 4.92 | 6.9 | 5 | 6.98 | 5.07 | 73.9 | |
| 7.48 | 6.3 | 7.31 | 6.39 | 7.37 | 6.45 | 49.1 |
| 5.91 | 7.3 | 6 | 7.37 | 6.06 | 61.8 | |
| 5.2 | 7.29 | 5.28 | 7.37 | 5.35 | 82.7 | |
| 7.87 | 6.3 | 7.69 | 6.39 | 7.76 | 6.46 | 65.6 |
| 5.91 | 7.69 | 6 | 7.76 | 6.07 | 78.6 | |
| 5.51 | 7.67 | 5.59 | 7.76 | 5.68 | 90 | |
| 8.35 | 6.69 | 8.16 | 6.8 | 8.22 | 6.86 | 73.2 |
| 5.12 | 8.22 | 5.2 | 122.3 | 5.3 | 8.12 | |
| 8.82 | 7.09 | 8.62 | 7.19 | 8.69 | 7.26 | 81.3 |
| 5.51 | 8.58 | 5.59 | 8.69 | 5.7 | 133.7 | |
| 9.29 | 7.48 | 9.08 | 7.59 | 9.15 | 7.66 | 89.4 |
| 5.91 | 9.04 | 6 | 9.15 | 6.1 | 145.1 | |
| 9.84 | 7.87 | 9.62 | 7.99 | 9.69 | 8.07 | 102.8 |
Dimension Of MT309S large diameter stainless steel tube
| Sizes Outside Dia, Inches |
Wall Decimal |
Wall Inches |
Weight Lbs./Ft. |
Inner Dia |
| 2 | 0.188 | 3/16 | 3.638 | 1.624 |
| 0.250 | 1/4 | 4.673 | 1.500 | |
| 0.375 | 3/8 | 6.508 | 1.250 | |
| 0.500 | 1/2 | 8.010 | 1.000 | |
| 1 | 0.188 | 3/16 | 1.630 | 0.624 |
| 0.250 | 1/4 | 2.003 | 0.500 | |
| 1-1/4 | 0.188 | 3/16 | 2.132 | 0.874 |
| 0.250 | 1/4 | 2.670 | 0.750 | |
| 1-1/2 | 0.188 | 3/16 | 2.634 | 1.124 |
| 0.250 | 1/4 | 3.338 | 1.000 | |
| 0.375 | 3/8 | 4.506 | 0.750 | |
| 1-3/4 | 0.188 | 3/16 | 3.136 | 1.374 |
| 0.250 | 1/4 | 4.005 | 1.250 | |
| 0.375 | 3/8 | 5.507 | 1.000 | |
| 2-1/8 | 0.188 | 3/16 | 3.889 | 1.749 |
| 0.250 | 1/4 | 5.006 | 1.625 | |
| 0.313 | 5/16 | 6.057 | 1.500 | |
| 0.438 | 7/16 | 7.891 | 1.250 | |
| 2-1/4 | 0.188 | 3/16 | 4.140 | 1.874 |
GRADE |
ROCKWELL HARDNESS NO, MAX, B SCALE |
BRINELL HARDNESS NO, MAX |
|---|---|---|
| All austenitic |
90 | 192 |
| MT 403 | 95 | 207 |
| MT 405 | 95 | 207 |
| MT 410 | 95 | 207 |
| MT 414 | 99 | 235 |
| MT 416 Se | 97 | 230 |
| MT 429/ MT 430 | 90 | 190 |
| MT 431 | - | 260 |
| MT 440 A | 95 | 215 |
| MT 443 | 95 | 207 |
| MT 446 | 95 | 207 |
| 29-4 | 95 | 207 |
| 29-4-2 | 95 | 207 |
A511/ A511M MT304L Stainless Steel Seamless Tube Price
| ASTM A511 type 304/304L sleamless stainless steel pipes | 350/kg |
Permissible Variations Of MT309 Stainless Steel Tube
OUTSIDE DIAMETER (OD) IN. |
OVALITY, B DOUBLE |
PERMISSIBLE VARIATIONS |
OUTSIDE DIAMETER (OD) TOLERANCE, B |
WALL THICKNESS (WT) |
||
|---|---|---|---|---|---|---|
|
|
OVER |
UNDER |
|
OVER |
UNDER |
| 31/2 to 51/2 , excl | less than 0.150 in. | 3/16 | 0 | 0.015 | 10 | 10 |
| 51/2 to 8, exc | less than 0.240 in. | 3/16 | 0 | 0.03 | 10 | 10 |
| Under 1/2 | less than 0.015 in. | 1/8 | 0 | 0.005 | 15 | 15 |
| 1/2 to 11/2 , excl | less than 0.065 in. | 1/8 | 0 | 0.005 | 10 | 10 |
| 11/2 to 31/2 , excl | less than 0.095 in. | 3/16 | 0 | 0.01 | 10 | 10 |
| 8 to 85/8 , excl | less than 0.300 in. | 3/16 | 0 | 0.045 | 10 | 10 |
| 85/8 to 123/4 , incl | less than 0.350 in. | 3/16 | 0 | 0.062 | 10 | 10 |
ASTM A511 Stainless Steel Tube Types

ASTM A511 Stainless Steel Tubing

ASTM A511 Mt304 Stainless Steel Seamless Tube

A511M Grade Mt316 Mechanical Tube

Stainless Steel ASTM A511 Seamless Tube

MT309S large diameter stainless steel tube

ASTM A511 Tubing

A511/ A511M MT304L Stainless Steel Seamless Tube

MT309 Stainless Steel Tube

MT310S Seamless Stainless Steel Mechanical Tubing
MT310S Seamless Stainless Steel Mechanical Tubing Heat Treatment
| Grade | Quench | Temperature °F [°C] |
| N08926 | quenched in water or rapidly cooled by other means | 2010–2100 [1100–1150]A |
| S31260 | rapid cooling in air or water | 1870-2010 [1020-1100] |
| S31803 | rapid cooling in air or water | 1870-2010 [1020-1100] |
| S32101 | quenched in water or rapidly cooled by other means | 1870 [1020] min |
| N08020 | quenched in water or rapidly cooled by other means | 1700–1850 [925–1010]A,B |
| N08367 | quenched in water or rapidly cooled by other means | 2025 [1105]A |
| N08810 | quenched in water or rapidly cooled by other means | 2050 [1120]A |
| N08811 | quenched in water or rapidly cooled by other means | 2100 [1150]A |
| N08904 | quenched in water or rapidly cooled by other means | 2000 [1100]A |
| N08925 | quenched in water or rapidly cooled by other means | 2010–2100 [1100–1150]A |
| S32205 | rapid cooling in air or water | 1870-2010 [1020-1100] |
| S32304 | rapid cooling in air or water | 1700-1920 [925-1050] |
| S32506 | rapid cooling in air or water | 1870-2050 [1020-1120] |
| S32550 | rapid cooling in air or water | 1900 [1040] min |
| S32707 | rapid cooling in air or water | 1975-2050 [1080-1120] |
| S32750 | rapid cooling in air or water | 1880-2060 [1025-1125] |
| S32760 | rapid cooling in air or water | 1960-2085 [1070-1140] |
| S32808 | rapid cooling in air or water | 1920-2100[1050-1150] |
| S32906 | rapid cooling in air or water | 1870-2100[1020-1150] |
| S32950 | air cool | 1820-1880[990-1025] |
| S39274 | rapid cooling in air or water | 1880-2060[1025-1125] |
Table of Contents