ASTM A511 Tubing

A511M Grade Mt304 Mechanical Tube manufacturer in India

ASTM A511 tubing is a specification for mechanical applications with high corrosion resistance. The ASTM A511 stainless steel tube is seamless and has higher dimensional accuracy. There are different grades of materials used in this range of tubes. There are also different types of tubing such as the ASTM A511 Seamless Stainless Steel Mechanical Tubing and Hollow Bar that are used in different applications. The material grades range from MT 302, 303, 304, 305 to MT347. All these grades have manganese, phosphorus, sulfur, silicon, nickel and chromium in the composition.

Some of the ASTM A511 Seamless tube grades also have molybdenum, titanium and columbium in different quantities. The grade MT303se has selenium in it. The ASTM A511 MT304 is the most used as it is cost efficient and has good strength and long lasting life. The corrosion resistance of the material is low compared to other grades such as the 316. The ASTM A511 grade mt304 tubes can range in sizes from 1 ½ inches to 24 inches and above according to the custom requirements. The length of the tubes varies with specifications and applications types as well. The ASTM A511 mt316 is a chromium nickel molybdenum austenitic stainless steel. It has higher corrosion resistance against chloride iron stress corrosion cracking. Therefore these tubes are preferred in marine, sea water, food processing, wastewater management, pollution control and in brackish water applications.

Supplier and exporter of ASTM A511 Mt316 Stainless Steel Tube, view todays latest price list ex Mumbai

Table of contents

ASTM A511 tolerances

Stainless Steel ASTM A511 Seamless Tube supplier in India for Mechanical Applications

Cold Finished ASTM A511 Tubing manufacturers

Size
Inches
ODB
Over/
Under, In.
WallCD Over/
Under %
Cut
Length Inches
OvalityB Double Outside Diameter Tolerlance
When Wall Is:
Under 1/2
0.005
15
+1/8 –0
less than 0.015
1/2 to 1-1/2 excl.
0.005
10
+1/8 –0
less than 0.065
1-1/2 to 3-1/2 excl.
0.010
10
+3/16 –0
less than 0.095
3-1/2 to 5-1/2 excl.
0.015
10
+3/16 –0
less than 0.150
5-1/2 to 8 excl.
0.030
10
+3/16 –0
less than 0.240
8 to 8-5/8 excl.
0.045
10
+3/16 –0
less than 0.300

Hot Finished ASTM A511 Tubing manufacturers

Specified
Size,
Outside
Diameter,
In.
Ratio of
Wall
Thickness
to Outside
Diameter
Outside
Diameter,
In.
Wall Thickness, %
Permissible
Variations
in Cut
Length
(in.A)
0.109, In.
and under
0.109 to 0.172
(in., incl.)
Over 0.172
to 0.203
(in., incl.)
Over
0.203, In.
Over
Under
Over
Under
Over
Under
Over
Under
Over
Under
Under 3
all wall
thicknesses
0.023
0.023
16.5
16.5
15
15
14
14
12.5
12.5
3/16
0
3 to 5-1/2
excl.
all wall
thicknesses
0.031
0.031
16.5
16.5
15
15
14
14
12.5
12.5
3/16
0
5-1/2 to 8
excl.
all wall
thicknesses
0.047
0.047
-
-
-
-
14
14
12.5
12.5
3/16
0
8 to 10-3/4
excl
5% and over
0.047
0.047
-
-
-
-
-
-
12.5
12.5
3/16
0
10-3/4 to
12-3/4 incl.
under 5%
0.063
0.063
-
-
-
-
-
-
12.5
12.5
3/16
0

SS ASTM A511 Tubing specification

Manufacturer of ASTM A511 Tubing and MT310S large diameter stainless steel tube upto 325mm

  • SMLS 316/316L A511 3-1/2 x .250 WA
  • STAINLESS STEEL TUBE ROUND 316/316L ASTM A511 3.5000 x .2500 x 17/24 FT
Standard ASTM A511
Grades MT304, MT304L, MT309S, MT310S, MT316L, MT317, MT321, MT347, MT410, MT430, MT446, ASTM A511 CRES 316
Shape rectangular, round, square, oval, U-bend tubing
Manufacturering Process cold finished, hot finished
Material Austenitic stainless steels, Ferritic and Martensitic Stainless Steels A511 Tubing manufacturer in India
Export Market North America, USA, Johannesburg, UAE, Dubai, South Africa, Europe, Qatar and other Asian countries
Available Inventory Mumbai, Ahmedabad, Dubai, Coimbatore, Chennai
Weight Per Foot 8.678 (lbs per Foot)

A511 Stainless Steel Mechanical Seamless Tubes Price per kg in India

Price of ASTM A511 type 304/304L sleamless stainless steel pipe manufacturers in India Currency
INR 350/kg
US $ 4.74 /kg
Malaysia 19.24 Ringgit /kg
Singapore 6.34 /kg
Philippines 228.00 Philippine peso /kg
United Arab Emirates Dirham AED 17.40 /kg
Vietnam 109585 Vietnamese dong /kg

ASTM A511 Grade Mt304

View Online inventory, manufacturer & exporter of A511/ A511M MT304L, MT309, MT309S Seamless Stainless Steel Mechanical Tubing at low cost

ASTM A511 Grade 304/304L

Finish: H.F

Size
OD, Inches
Wall
Inches
Wall
Decimal
ID
Weight
Lbs./Ft.
2-1/4
7/32
0.219
1.812
4.749
1/4
0.250
1.750
5.340
3/8
0.375
1.500
7.509
2-3/8
11/32
0.344
1.687
3.461
2-1/2
3/16
0.188
2.124
4.642
1/4
0.250
2.000
6.008
5/16
0.313
1.874
7.310
3/8
0.375
1.750
8.511
1/2
0.500
1.500
10.680
2-3/4
3/16
0.188
2.374
5.143
1/4
0.250
2.250
6.675
5/16
0.313
2.125
8.146
3/8
0.375
2.000
9.512
1/2
0.500
1.750
12.015
3
3/16
0.188
2.624
5.646
1/4
0.250
2.500
7.343
3/8
0.375
2.250
10.510
1/2
0.500
2.000
13.350
3-1/8
5/16
0.313
2.500
9.399
3-1/4
3/16
0.188
2.874
6.147
3-1/2
1/4
0.250
3.000
8.678
5/16
0.313
2.874
10.653
3/8
0.375
2.750
12.520
1/2
0.500
2.500
16.020
3-3/4
1/4
0.250
3.250
9.345
1/2
0.500
2.750
17.355
4
1/4
0.250
3.500
10.010
3/8
0.375
3.250
14.520
1/2
0.500
3.000
18.690
3/4
0.750
2.500
26.030
4-1/2
3/8
0.375
3.750
16.520
1/2
0.500
3.500
21.360
5
1/4
0.250
4.500
12.680
1/2
0.500
4.000
24.030
6
1/4
0.250
5.500
15.350
1/2
0.500
5.000
29.370
3/4
0.750
4.500
42.053

Ferritic and Martensitic ASTM A511 Stainless Steel Tube Chemical Composition

Grade
 C, maximum
 Mg,
max
 Ph,
max
 Sulfur,
max
 Silicon, max
 Ni
 Chromium
 Molyb-
denum
 Aluminum (Al)
 Copper (Cu)
 Nitrogen
 Selenium
MT 403 0.15 1.00 0.040 0.030 0.50 0.50 max 11.5–13.0 0.60 max
MT 410 0.15 1.00 0.040 0.030 1.00 0.50 max 11.5–13.5 - - - - -
MT 414 0.15 1.00 0.040 0.030 1.00 1.25–2.50 11.5–13.5 - - - - -
MT 416Se 0.15 1.25 0.060 0.060 1.00 0.50 max 12.0–14.0 - - - - 0.12–0.20
MT 431 0.20 1.00 0.040 0.030 1.00 1.25–2.50 15.0–17.0 - - - - -
MT 440A 0.60 to 0.75 1.00 0.040 0.030 1.00 - 16.0–18.0 0.75 max - - - -
Ferritic
MT 405 0.08 1.00 0.040 0.030 1.00 0.50 max 11.5–14.5 - 0.10–0.30 - - -
MT 429 0.12 1.00 0.040 0.030 1.00 0.50 max 14.0–16.0 - - - - -
MT 430 0.12 1.00 0.040 0.030 1.00 0.50 max 16.0–18.0 - - - - -
MT 443 0.20 1.00 0.040 0.030 1.00 0.50 max 18.0–23.0 - - 0.90–1.25 - -
MT 446–1 0.20 1.50 0.040 0.030 1.00 0.50 max 23.0–30.0 - - - 0.25 max -
MT 446–2A 0.12 1.50 0.040 0.030 1.00 0.50 max 23.0–30.0 - - - 0.25 max -
29-4 0.010 0.30 0.025 0.020 0.20 0.15 max 28.0–30.0 3.5–4.2 - 0.15 max 0.020 max -
29-4-2 0.010 0.30 0.025 0.020 0.20 2.0–2.5 28.0–30.0 3.5–4.2 - 0.15 max 0.020 maxB -

ASTM A511 Mt316 Properties

Grade C≤ Mn≤ P≤ S≤ Si≤ Ni Cr Mo Ti
 MT 316 0.08 2.0 0.040 0.030 1.00 11.0-14.0 16.0-18.0 2.0-3.0 -

Weight Chart of ASTM A511 Hollow bar

O.D in I.D in Guaranteed component sizes Chucked true to the O.D. Chucked true to the I.D Weight lb/ft
Ma. O.D in. Min. I.D
in.		 Ma. O.D in. Min. I.D in.
1.26 0.79 1.22 0.86 1.19 0.83 2.82
0.63 1.22 0.71 1.18 0.67 3.41
1.42 0.98 1.38 1.06 1.34 1.02 3.06
0.79 1.38 0.87 1.34 0.83 3.97
0.63 1.38 0.71 1.33 0.67 4.56
1.57 1.10 1.54 1.18 1.50 1.14 3.69
0.98 1.54 1.06 1.50 1.02 4.35
0.79 1.54 0.87 1.49 0.83 5.26
1.77 1.26 1.73 1.33 1.70 1.30 4.50
1.10 1.73 1.18 1.69 1.14 5.49
0.79 1.73 0.87 1.69 0.83 7.06
1.97 1.42 1.93 150 1.89 1.46 5.38
1.26 1.93 1.34 1.89 1.30 6.52
0.98 1.93 1.07 1.88 1.02 8.13
2.20 1.57 2.17 1.65 2.13 1.61 6.85
1.42 2.17 1.50 2.12 1.46 8.13
1.10 2.17 1.19 2.11 1.14 10.2
2.48 1.97 2.44 2.04 2.41 2.01 6.66
1.57 2.44 1.66 2.39 1.61 10.3
1.42 2.44 1.51 2.39 1.46 11.6
1.26 2.44 1.35 2.39 1.30 12.8
2.80 2.20 2.75 2.28 2.71 2.24 8.67
1.77 2.75 1.86 2.70 1.81 13.2
1.57 2.75 1.67 2.70 1.61 15.0
1.42 2.75 1.52 2.69 1.46 16.2
2.95 1.57 2.91 1.67 2.85 1.61 17.5
3.15 2.48 3.10 2.56 3.06 2.52 11.0
1.97 3.10 2.06 3.05 2.01 17.0
1.77 3.10 1.87 3.04 1.81 19.0
1.57 3.10 1.68 3.04 1.61 20.8
3.35 1.77 3.30 1.87 3.23 1.81 22.5
3.54 2.80 3.49 2.88 3.45 2.84 13.8
2.48 3.49 2.57 3.44 2.52 18.2
2.20 3.49 2.30 3.43 2.24 21.7
1.97 3.49 2.07 3.43 2.01 24.3
3.74 1.97 3.68 2.07 3.61 2.01 28.3
3.94 3.15 3.88 3.24 3.83 3.20 16.4
2.80 3.88 2.89 3.83 2.84 22.0
2.48 3.88 2.58 3.82 2.52 26.3
2.20 3.88 2.31 3.81 2.24 28.4
4.17 3.15 4.11 3.25 4.06 3.20 21.7
2.80 4.11 2.89 4.06 2.84 27.3
2.48 4.11 2.59 4.04 2.52 31.6
2.20 4.11 2.32 4.04 2.24 35.0
4.41 3.54 4.34 3.64 4.30 3.60 20.3
3.15 4.34 3.25 4.29 3.20 27.3
2.80 4.34 2.90 4.28 2.84 32.8
2.48 4.34 2.59 4.27 2.52 37.2
4.65 3.54 4.57 3.65 4.52 3.60 26.2
3.15 4.57 3.26 4.51 3.20 33.2
2.80 4.57 2.91 4.51 2.84 38.7
2.48 4.57 2.60 4.50 2.52 43.1
4.92 3.94 4.85 4.04 4.80 4.00 25.7
3.54 4.85 3.65 4.79 3.60 33.5
3.15 4.85 3.26 4.78 3.20 40.5
2.80 4.85 2.91 4.77 2.84 46.0
5.20 4.17 5.12 4.28 5.07 4.24 28.2
3.54 5.12 3.66 5.06 3.60 41.1
3.15 5.12 3.27 5.04 3.20 48.0
2.80 5.12 2.92 5.04 2.84 53.6
5.51 4.41 5.43 4.53 5.38 4.48 32.1
3.94 5.43 4.06 5.37 4.00 42.5
3.54 5.43 3.67 5.36 3.60 50.3
3.15 5.43 3.28 5.35 3.20 57.3
5.91 4.92 5.81 5.04 5.77 5.00 31.9
4.17 5.81 4.30 5.75 4.24 49.9
3.74 5.81 3.87 5.74 3.80 58.9
3.15 5.81 3.29 5.72 3.20 67.9
6.30 5.20 6.20 5.33 6.15 5.28 37.8
4.41 6.20 4.55 6.13 4.48 57.7
6.69 5.51 6.59 5.65 6.54 5.59 42.9
5.12 6.59 5.26 6.53 5.2 53.9
4.65 6.59 4.79 6.52 4.72 66.1
7.09 5.91 6.98 6.05 6.93 6 46
5.51 6.98 5.66 6.92 5.59 57.9
4.92 6.98 5.07 6.9 5 73.9
7.48 6.3 7.37 6.45 7.31 6.39 49.1
5.91 7.37 6.06 7.3 6 61.8
5.2 7.37 5.35 7.29 5.28 82.7
7.87 6.3 7.76 6.46 7.69 6.39 65.6
5.91 7.76 6.07 7.69 6 78.6
5.51 7.76 5.68 7.67 5.59 90
8.35 6.69 8.22 6.86 8.16 6.8 73.2
5.12 8.22 5.3 8.12 5.2 122.3
8.82 7.09 8.69 7.26 8.62 7.19 81.3
5.51 8.69 5.7 8.58 5.59 133.7
9.29 7.48 9.15 7.66 9.08 7.59 89.4
5.91 9.15 6.1 9.04 6 145.1
9.84 7.87 9.69 8.07 9.62 7.99 102.8

ASTM A511 Seamless Mechanical Tube dimensions

ASTM A511 Grade 304/304L

Finish: H.F

Size
OD, Inches
Wall
Inches
Wall
Decimal
ID
Weight
Lbs./Ft.
1
3/16
0.188
0.624
1.630
1/4
0.250
0.500
2.003
1-1/4
3/16
0.188
0.874
2.132
1/4
0.250
0.750
2.670
1-1/2
3/16
0.188
1.124
2.634
1/4
0.250
1.000
3.338
3/8
0.375
0.750
4.506
1-3/4
3/16
0.188
1.374
3.136
1/4
0.250
1.250
4.005
3/8
0.375
1.000
5.507
2
3/16
0.188
1.624
3.638
1/4
0.250
1.500
4.673
3/8
0.375
1.250
6.508
1/2
0.500
1.000
8.010
2-1/8
3/16
0.188
1.749
3.889
1/4
0.250
1.625
5.006
5/16
0.313
1.500
6.057
7/16
0.438
1.250
7.891
2-1/4
3/16
0.188
1.874
4.140

Chemical Composition of ASTM A511 Tubing

Grade

Carbon

Mn

P

S

Si, max

Ni

Cr

Mo

Ti

Columbium plus Tantalum

Se



 max

max

max








MT 302

0.08 to 0.20

2

0.04

0.03

1

8.0–10.0

17.0–19.0

...

...

...

...

MT 303

0.15 max

2

0.2

0.15 min

1

8.0–10.0

17.0–19.0

...

...

...

...

MT 303Se

0.15 max

2

0.04

0.04

1

8.0–11.0

17.0–19.0

...

...

...

0.12–0.2

MT 304

0.08 max

2

0.04

0.03

1

8.0–11.0

18.0–20.0

...

...

...

...

MT 304L

0.035 maxA

2

0.04

0.03

1

8.0–13.0

18.0–20.0

...

...

...

...

MT 305

0.12

2

0.04

0.03

1

10.0–13.0

17.0–19.0

...

...

...

...

MT 309S

0.08 max

2

0.04

0.03

1

12.0–15.0

22.0–24.0

...

...

...

...

MT 310S

0.08 max

2

0.04

0.03

1

19.0–22.0

24.0–26.0

...

...

...

...

MT 316

0.08 max

2

0.04

0.03

1

11.0–14.0

16.0–18.0

2.0–3.0

...

...

...

MT 316L

0.035 maxA

2

0.04

0.03

1

10.0–15.0

16.0–18.0

2.0–3.0

...

...

...

MT 317

0.08 max

2

0.04

0.03

1

11.0–14.0

18.0–20.0

3.0–4.0

...

...

...

MT 321

0.08 max

2

0.04

0.03

1

9.0–13.0

17.0–20.0

...

B

...

...

MT 347

0.08 max

2

0.04

0.03

1

9.0–13.0

17.0–20.0

...

...

C

...

Cold-Finished ASTM A511 Tubing Permissible Variations

Outside Diameter (OD) in.

Outside Diameter (OD) Tolerance, B
in. Over and Under

Ovality, B Double
Outside Diameter (OD)
Tolerance when wall is:

Wall Thickness (WT)
in %C,D

Permissible Variations
in Cut Length, in.E

　

　

　

Over

Under

Over

Under

Under 1/2

0.005

less than 0.015 in.

15

15

1/8

0

1/2 to 11/2 , excl

0.005

less than 0.065 in.

10

10

1/8

0

11/2 to 31/2 , excl

0.01

less than 0.095 in.

10

10

3/16

0

31/2 to 51/2 , excl

0.015

less than 0.150 in.

10

10

3/16

0

51/2 to 8, exc

0.03

less than 0.240 in.

10

10

3/16

0

8 to 85/8 , excl

0.045

less than 0.300 in.

10

10

3/16

0

85/8 to 123/4 , incl

0.062

less than 0.350 in.

10

10

3/16

0

Hot-Finished ASTM A511 Tubing Permissible Variations

Specified Size, Outside
Diameter, in.

Ratio of Wall
Thickness to
Outside Diameter

Outside Diameter and Wall Thickness Tolerances

Permissible Variations
in Cut Length, in.A



Wall Thickness, %




Outside
Diameter, in.

0.109 in.
and under

0.109 to
0.172 in., incl

Over 0.172 to
0.203 in., incl

Over 0.203 in.


　

　

over

under

over

under

over

under

over

under

over

under


Under 3

all wall thicknesses

0.023

0.023

16.5

15

15

15

14

14

12.5

12.5

3/16

0

3 to 51/2 , excl

all wall thicknesses

0.031

0.031

16.5

15

15

15

14

14

12.5

12.5

3/16

0

51/2 to 8, excl

all wall thicknesses

0.047

0.047

…

…

…

…

14

14

12.5

12.5

3/16

0

8 to 103/4 , excl

5 % and over

0.047

0.047

…

…

…

…

…

…

12.5

12.5

3/16

0

103/4 to 123/4 , incl

under 5 %

0.063

0.063

…

…

…

…

…

…

12.5

12.5

3/16

0

ASTM A511 Stainless Steel Tube Straightness Tolerances

Size Limits

Max Curvature
in any 3 ft, in.

Max Curvature in Total Lengths, in.

Max Curvature for
Lengths under 3 ft

OD 5 in. and smaller. WT, over 3 % of OD but not over 0.5 in.

0.03

0.030 3 [ (No. of feet of length)/3]

Ratio of 0.010 in./ft

OD over 5 in. to 8 in., incl. WT, over 4 % of OD but not over 0.75in.

0.045

0.045 3 [(No. of feet of length)/3]

Ratio of 0.015 in./ft

OD over 8 in. to 123⁄4 , incl. WT, over 4 % of OD but not over 1 in.

0.06

0.060 3 [(No. of feet of length)/3]

Ratio of 0.020 in./ft

Square and Rectangular ASTM A511 Seamless Mechanical Tubing

Largest OD Across
Flats, in.

Tolerances, OD Seamless Mechanical Tubing Plus and Minus, in.

Tolerances, OD Seamless Mechanical Tubing Plus and Minus, in.

 

Tolerance for OD (Including Convexity or Concavity) Plus and Minus, in.

For Wall Thickness, Given, in.

To 3⁄4 , incl

0.015

0.065 and lighter

To 3⁄4 , incl

0.01

over 0.065

Over 3⁄4 to 11⁄4 , incl

0.015

all thicknesses

Over 11⁄4 to 21⁄2 , incl

0.02

all thicknesses

Over 21⁄2 to 31⁄2 , incl

0.03

0.065 and lighter

Over 21⁄2 to 31⁄2 , incl

0.025

over 0.065

Over 31⁄2 to 51⁄2 , incl

0.03

all thicknesses

Over 51⁄2 to 71⁄2 , incl

1%

all thicknesses

ASTM A511 Anneald Round Tube Hardness

Grade

 Brinell Hardness No, Max

Rockwell Hardness No, Max, B Scale

All austenitic

 192 90

MT 403

 207 95

MT 405

 207 95

MT 410

 207 95

MT 414

 235 99

MT 416 Se

 230 97

MT 429/ MT 430

 190 90

MT 431

 260 -

MT 440 A

 215 95

MT 443

 207 95

MT 446

 207 95

29-4

207 95

29-4-2

 207 95